Answer:
13.
Step-by-step explanation:
2g + 7
= 2(3) + 7
= 6 + 7
= 13.
Answer: 13
Step-by-step explanation: In this problem, we have the xpression 2g + 7 and we want to evaluate the expression when g is equal to 3.
To evaluate an expression, we simply plug the value of the variable into the expression and solve. So here, since g is equal to 3, we have 2 (3) + 7. 2 × 3 is equal to 6 so we have 6 + 7 which is equal to 13.
So the value of our expression when g is equal to 3 is 13.
Remember, when we see a variable like g next to a number, it means multiplication so you want to multiply by the value of the variable.
Use the following figure to answer the question
∠ 1 and ∠ 3 are vertical angles.
True
False
Answer:
True
Step-by-step explanation:
1 and 3 are vertical angles
Answer: False
<1 and <3 are Supplementary Angles
Step-by-step explanation:
Today Robbie is carrying his history textbook and his lunch in his backpack. If the history textbook weighs 2 5/6 pounds and his lunch weighs 1 2/3 pounds, how much weight is in Robbie's backpack?
Final answer:
To find the total weight in Robbie's backpack, the weights of the history textbook (2 5/6 pounds) and lunch (1 2/3 pounds) are added, resulting in a total of 4 1/2 pounds.
Explanation:
The question involves finding the total weight of items in Robbie's backpack: a history textbook and his lunch. The history textbook weighs 2 5/6 pounds and his lunch weighs 1 2/3 pounds.
To find the total weight, we first convert the mixed numbers into improper fractions for easier addition. The history textbook's weight as an improper fraction is (2×6)+5 = 17/6 pounds. The lunch's weight is (1×3)+2 = 5/3 pounds.
Adding these two fractions gives us:
17/6 + 5/3 = 17/6 + 10/6 = 27/6 pounds
Since 27/6 simplifies to 4 1/2 pounds, the total weight in Robbie's backpack is 4 1/2 pounds.
What is the negation of the following statement a triangle cannot contain two right angles
Answer:
It is because a triangle has a total angle sum of 180 degrees.
Step-by-step explanation:
90+90=180
But that was only 2 corners so the last corner has to be 0 degrees which is impossible.
Answer: A triangle does not contain two right angles.
.
Step-by-step explanation:
John is selling candy bars the equation is p=c^2+2c-5 determines the profit,p, where c is the number of candy bars sold what is the minimum number of candy bars he needs to sell to make profit
Answer:
2
Step-by-step explanation:
Find the value of c where p = 0.
0 = c² + 2c − 5
6 = c² + 2c + 1
6 = (c + 1)²
±√6 = c + 1
c = -1 ± √6
c must be positive, so c = -1 + √6 ≈ 1.45. So John must sell at least 2 candy bars to make a profit.
We can also show this using trial and error.
If c = 0, then p = -5
If c = 1, then p = -2
If c = 2, then p = 3
A bicycle wheel with the diameter 70cm is making 25 revolutions while travelling. Find the distance covered by the bicycle
The total distance covered by the bicycle is calculated using the circumference of the wheel and the number of revolutions made. With a wheel diameter of 70 cm, the total distance comes to approximately 55.0 meters after 25 revolutions.
Explanation:The question involves calculating the distance covered by a bicycle wheel making a certain number of revolutions. Given that the diameter of the wheel is 70 cm, we can find the circumference, which is the distance the wheel covers per revolution. The circumference is equal to \\(\pi\cdot d\\), where \\(d\\) is the diameter. Substituting the given diameter:
Circumference = \\(\pi \times 70 \\text{cm}\\)Since the wheel makes 25 revolutions, the total distance covered (\\em{D}}) can be found by multiplying the circumference by the number of revolutions:
Total distance covered = Circumference \\(\times\\) Number of revolutionsTotal distance covered = \\(\pi \times 70 \\text{cm} \times 25\\)Thus, the bicycle covers a distance of \\(25 \times \pi \times 70 \\text{cm}\\), or \\(25 \times \pi \times 0.7 \\text{m}\\), since 100 cm equals 1 meter.
To find the exact value, you would calculate:
Total distance covered = \\(25 \times \pi \times 0.7 \\text{m} \\approx 55.0 \\text{meters}\\)Which is a correct first step for solving this equation?
x + 7 = 2x + 5 - 4x
Answer:getting rid of the constant
Step-by-step explanation:
Answer: simplify x + 7 = 2x + 5 - 4x by combining like terms so x+7= 5-2x
Step-by-step explanation:
For which pairs of functions is (f circle g) (x)?
f (x) = x squared and g (x) = StartFraction 1 Over x EndFraction
f (x) = StartFraction 2 Over x EndFraction and g (x) = StartFraction 2 Over x EndFraction
f (x) = StartFraction x minus 2 Over 3 EndFraction and g (x) = 2 minus 3 x
f (x) = one-half x minus 2 and g (x) = one-half x + 2
Mark
Option B is correct. The required composite function where f(g(x)) is x is f (x) = StartFraction 2 Over x EndFraction and g (x) = StartFraction 2 Over x EndFraction
Composite functions are functions written inside another function e.g f(g(x))
Given the expressions
f(x) = 2/x
g(x) = 2/x
We are to find the composite function f(g(x))
f(g(x)) = f(2/x)
f(2/x) = (2/(2/x))
f(2/x) = 2 * x/2
f(2/x) = x
Hence the required composite function where f(g(x)) is x is f (x) = StartFraction 2 Over x EndFraction and g (x) = StartFraction 2 Over x EndFraction
[tex]1. \( (f \circ g)(x) = \frac{1}{x^2} \)\\2. \( (f \circ g)(x) = x \)\\3. \( (f \circ g)(x) = -x \)\\4. \( (f \circ g)(x) = \frac{1}{4}x - 1 \)[/tex]
let's break down each pair of functions and find their composition:
1. For [tex]\( f(x) = x^2 \) and \( g(x) = \frac{1}{x} \):[/tex]
To find [tex]\( (f \circ g)(x) \)[/tex], we substitute [tex]\( g(x) \) into \( f(x) \):[/tex]
[tex]\[ (f \circ g)(x) = f(g(x)) = f\left(\frac{1}{x}\right) = \left(\frac{1}{x}\right)^2 = \frac{1}{x^2} \][/tex]
So, [tex]\( (f \circ g)(x) = \frac{1}{x^2} \).[/tex]
2. For [tex]\( f(x) = \frac{2}{x} \) and \( g(x) = \frac{2}{x} \):[/tex]
Here, [tex]\( (f \circ g)(x) = f(g(x)) = f\left(\frac{2}{x}\right) \).[/tex]
When you substitute [tex]\( \frac{2}{x} \) into \( f(x) \),[/tex] you get:
[tex]\[ (f \circ g)(x) = f\left(\frac{2}{x}\right) = \frac{2}{\frac{2}{x}} = x \][/tex]
So, [tex]\( (f \circ g)(x) = x \).[/tex]
3. For [tex]\( f(x) = \frac{x-2}{3} \) and \( g(x) = 2 - 3x \):[/tex]
[tex]\( (f \circ g)(x) = f(g(x)) = f(2 - 3x) \).[/tex]
Substituting [tex]\( 2 - 3x \) into \( f(x) \),[/tex]we get:
[tex]\[ (f \circ g)(x) = f(2 - 3x) = \frac{(2 - 3x) - 2}{3} = \frac{-3x}{3} = -x \][/tex]
So, [tex]\( (f \circ g)(x) = -x \).[/tex]
4. For [tex]\( f(x) = \frac{1}{2}x - 2 \) and \( g(x) = \frac{1}{2}x + 2 \):[/tex]
Here, [tex]\( (f \circ g)(x) = f(g(x)) = f\left(\frac{1}{2}x + 2\right) \).[/tex]
When you substitute [tex]\( \frac{1}{2}x + 2 \) into \( f(x) \),[/tex] you get:
[tex]\[ (f \circ g)(x) = f\left(\frac{1}{2}x + 2\right) = \frac{1}{2}\left(\frac{1}{2}x + 2\right) - 2 = \frac{1}{4}x + 1 - 2 = \frac{1}{4}x - 1 \][/tex]
So, [tex]\( (f \circ g)(x) = \frac{1}{4}x - 1 \).[/tex]
So, summarizing:
1. For [tex]\( f(x) = x^2 \) and \( g(x) = \frac{1}{x} \), \( (f \circ g)(x) = \frac{1}{x^2} \).[/tex]
2. For [tex]\( f(x) = \frac{2}{x} \) and \( g(x) = \frac{2}{x} \), \( (f \circ g)(x) = x \).[/tex]
3. For [tex]\( f(x) = \frac{x-2}{3} \) and \( g(x) = 2 - 3x \), \( (f \circ g)(x) = -x \).[/tex]
4. For [tex]\( f(x) = \frac{1}{2}x - 2 \) and \( g(x) = \frac{1}{2}x + 2 \), \( (f \circ g)(x) = \frac{1}{4}x - 1 \).[/tex]
2. Irene wants to list the factors for 88. She
writes 2, 4, 8, 11, 22, 44, and 88. Is Irene
correct? Explain.
Irene's list of factors for the number 88 is almost correct, but she forgot to include the number 1.
Irene wants to list the factors for 88 and she writes 2, 4, 8, 11, 22, 44, and 88. To verify if Irene is correct, we need to identify all of the numbers that can evenly divide 88 without leaving a remainder. Starting with the number 1, which is a factor of every number:
1 x 88 = 88, so 1 and 88 are factors.
2 x 44 = 88, so 2 and 44 are factors.
4 x 22 = 88, so 4 and 22 are factors.
8 x 11 = 88, so 8 and 11 are factors.
Since there are no other numbers between 1 and 88 that can multiply together to equal 88, the list that Irene wrote appears to be missing the number 1.
Therefore, Irene's list is almost correct, but for it to be complete, it should include the number 1. The full list of factors for the number 88 should be 1, 2, 4, 8, 11, 22, 44, 88.
A restaurant bill is $59 and you pay $72. What percentage gratuity did you pay ? Show work please:
You paid 22% gratuity at the restaurant.
Step-by-step explanation:
Given,
Amount of bill = $59
Amount paid = $72
Gratuity = Amount paid - Amount of bill
Gratuity = 72 - 59 = $13
Gratuity percentage = [tex]\frac{Gratuity}{Amount\ of\ bill}*100[/tex]
Gratuity percentage = [tex]\frac{13}{59}*100=\frac{1300}{59}[/tex]
Gratuity percentage = 22.03%
Rounding off to whole percent
Gratuity percentage = 22%
You paid 22% gratuity at the restaurant.
Keywords: percentage, subtraction
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The percentage did you pay is 22.03%
Given that,
A restaurant bill is $59 and you pay $72.Based on the above information, the calculation is as follows:
[tex]= (\$72 - \$59) \div (\$59)\\\\= \$13 \div \$59[/tex]
= 22.03%
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Kim drove from Mathtown at (-2, 5) to Geometryville at (3, -1) to Algebra Springs at (-6, -5), and then back to Mathtown. Find the total distance Kim traveled to the nearest hundredth.
Answer:
33.38 km
Step-by-step explanation:
Kim drove from Math Town at (-2, 5) to Geometry Ville at (3, -1) to Algebra Springs at (-6, -5), and then back to Math town.
Now, the distance from (-2,5) point to (3,-1) point will be
[tex]\sqrt{(- 2 - 3)^{2} + (5 - (-1))^{2}} = \sqrt{61}[/tex] km.
Again, the distance from point (3,-1) and (-6,-5) point will be
[tex]\sqrt{(3 - (- 5))^{2} + (- 1 - (- 5))^{2}} = \sqrt{80}[/tex] km.
Therefore, the total distance Kim traveled will be = [tex]2(\sqrt{61} + \sqrt{80}) = 33.38[/tex] Km. (Answer)
The distance between two points [tex](x_{1},y_{1})[/tex] and [tex](x_{2},y_{2})[/tex] on the coordinate plane is given by
[tex]\sqrt{(x_{1} - x_{2})^{2} + (y_{1} - y_{2})^{2}}[/tex]
The theoretical probability of an event occurring is Two-fifths. Which best describes the experimental probability associated with this event? Out of every 5 trials, the desired outcome will occur exactly 2 times. Out of every 5 trials, the desired outcome will occur approximately 2 times. Out of every 7 trials, there will be 2 desired outcomes and 5 undesired outcomes. Out of every 7 trials, there will be 5 desired outcomes and 2 undesired outcomes.
Answer:
Out of every 5 trials, the desired outcome will occur approximately 2 times
Step-by-step explanation:
The first statements states that it will happen exactly two times, but probability never guarantee the outcome
The third and fourth statement states out of 7 which cannot be true as 2-5 basically means out of 5
Answer:
B: Out of every 5 trials, the desired outcome will occur approximately 2 times.
Step-by-step explanation:
Identify the slope of the line for the equation y = 8x − 9.
A) −9
B) −8
C) 8
D) 9
What is the coeficient of n in the following expression?
m+3n+5
Answer:
3 is the coefficient
Step-by-step explanation:
please find the attached file for more details please
- the coefficient is always the number before a variable.
m + 3n + 5
coefficient: 3
A right cylinder has a radius of 3 and a height of 12. What is its surface area?
A. 457 pi units squared
B. 90 pi units squared
c. 108 pi units squared
D. 72 pi units squared
Answer:
90π units²
Step-by-step explanation:
(refer to attached)
Total Surface are off a right cylinder = area of its ends + area of curved surface
Given radius, r = 3 units and height, h = 12 units
Area of 2 ends,
= Area of 2 circles
= 2 x πr²
= 2π (3²)
= 2π (9)
=18π units²
Area of curved surface,
= 2πrh
= 2π(3)(12)
= 72π units²
Hence,
Surface area = 18π + 72π = 90π units²
The solution is, 90π units² is its surface area.
What is area ?Area is the measure of a region's size on a surface. The area of a plane region or plane area refers to the area of a shape or planar lamina, while surface area refers to the area of an open surface or the boundary of a three-dimensional object.
here, we have,
given that,
A right cylinder has a radius of 3 and a height of 12.
we know that,
Total Surface are off a right cylinder = area of its ends + area of curved surface
Given radius,
r = 3 units and height, h = 12 units
Area of 2 ends,
= Area of 2 circles
= 2 x πr²
= 2π (3²)
= 2π (9)
=18π units²
Area of curved surface,
= 2πrh
= 2π(3)(12)
= 72π units²
Hence,
Surface area = 18π + 72π = 90π units²
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what is the area of a 70 mm circle
Answer:
The area of the circle is 3,8550 mm
Step-by-step explanation:
Diameter (d) = 70 mm
Radius (r) = (70/2) mm = 35mm
Π = 22/7
Area of circle x = πr^2
= 22/7 x 35^2
= 22/7 x 1225
= 26,950/7
= 3,850 mm
find the slope of the line that is horizontal and passes through the point (3,-4). m= ?
Answer: [tex]m=0[/tex]
Step-by-step explanation:
The slope can be calculated with this formula:
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Notice that the formula shows the change in "y" for a unit change in "x" on the line.
In order to solve this exercise, it is important to remember that:
1. If a line is increasing, then its slope is positive.
2. If a line is decreasing, then its slope is negative.
3. If the line is horizontal, its slope is zero.
4. If the line is vertical, it has no slope.
Therefore, since the given line that passes through the point [tex](3,-4)[/tex], is horizontal, its slope is:
[tex]m=0[/tex]
What is the value of 4x−8(2−x) , when x=−1/4
Answer:
-19
Step-by-step explanation:
4x-8(2-x)
4x-16+8x
12x-16
12(-1/4)-16
-12/4-16
-3-16
-19
Answer:
-19 I think lemme know if im right
Step-by-step explanation:
A clothing store uses the step function f(x) to recommend jeans sizes as a function of x, a child’s height in inches. f(x) = StartLayout Enlarged left-brace 1st row 1st column 1 2nd column 40 less-than-or-equal-to x less-than 42 2nd row 1st column 2 2nd column 42 less-than-or-equal-to x less-than 44 3rd row 1st column 3 2nd column 44 less-than-or-equal-to x less-than 46 4th row 1st column 4 2nd column 46 less-than-or-equal-to x less-than 48 EndLayout According to the function, which is the height of a child who should wear size 2 jeans? 41.9 inches 42 inches 44 inches 44.1 inches
Answer: B. 42 inches
Step-by-step explanation:
Answer:
42 inches
Step-by-step explanation:
The function states in its second row that for size 2, the range of x (a child’s height in inches) is 42 ≤ x < 44. Then, the option 41.9 is incorrect because is less than 42 and x is greater-or-equal-to 42; option 44 inches is incorrect because it is equal to 44 and the equality sign is not included; option 44.1 inches is greater than 44 and x is less than 44; and option 42 inches is correct because x is greater-than-or-equal to 42, that is, the equal sign is included.
A teacher gave a math test to 48 students. The five-number summary of the test scores is shown.
Answer:
Its 24 and 12
Step-by-step explanation:
Answer:
He's right
Step-by-step explanation:
Factor completely 2x2 − 50.
a) Prime
b) 2(x − 5)(x + 5)
c) 2(x2 − 25)
d) 2(x + 5)(x + 5)
Answer:
(B) 2(x+5)(x−5)
Explanation:
Factor 2x²−50
2(x+5)(x−5)
Answer:
b) 2(x - 5)(x + 5)
Step-by-step explanation:
2x² - 50
2(x² - 25)
(x² - 25) is a difference of squares and it equals (x - 5)(x + 5)
So the answer is;
2(x - 5)(x + 5)
Help help help help help
Answer:
8
Step-by-step explanation:
To solve this, you can add 2/5 b to both sides of the equation. You now have 3 + 5/5 (or 1) b = 11. => 3 + b = 11 => Now, subtract 3 from both sides, and you have b = 11 - 3, and then b = 8.
Step-by-step explanation:
3 + 2/5 b =11 - 2/5 b (this is the given question is it?)
2/5 b + 2/5 b= 11 - 3 (like terms together, you transpose -2/5b to the other side as shown.)
2b+2b = 8 ( at that stage you would find t
5 hat 5 is the common value to go into 5 itself, as shown.
4b = 8 ( you just add 2b + 2b to have 4b)
5
4b = 8 ( at that point you cross multiply
5 1 as shown)
4b = 8 × 5 ( simple math as shown)
4b = 40 ( you multiply 8 × 5 to obtain 40)
b =10 you can prove that. Thank you.
The function f is such that f(x) = x^2 – 2x + 3
Solve f(x) = 27
(The bottom question in the photo)
Answer:
x = - 4, x = 6
Step-by-step explanation:
Given
f(x) = x² - 2x + 3 and f(x) = 27, then equating the 2 gives
x² - 2x + 3 = 27 ( subtract 27 from both sides )
x² - 2x - 24 = 0 ← in standard form
Consider the factors of the constant term (- 24) which sum to give the coefficient of the x- term (- 2)
The factors are - 6 and + 4, since
- 6 × 4 = - 24 and - 6 + 4 = - 2, thus
(x - 6)(x + 4) = 0
Equate each factor to zero and solve for x
x - 6 = 0 ⇒ x = 6
x + 4 = 0 ⇒ x = - 4
f(x)= 27
x^2 -2x+3=27
×^-2x+3-27=0
x^2x-24=0
(x-6)(x-4)=0
x-6=0 or ×-4=0
×=6or ×=4
You need to rent a bowling lane. On Friday nights, you have two options. Option A is a $20 lane rental plus $3 per game. Option B is a $35 lane rental with a maximum of 10 games. For what number of games is the cost the same for each option?
For 5 games, the cost will be equal for each option.
Step-by-step explanation:
Given,
Lane rental of offer A = $20
Per game charges = $3
Let,
x be the number of games.
A(x) = 3x + 20
Lane rental is $35 for maximum 10 games.
B(x) = 35
For the cost to be same;
A(x) = B(x)
[tex]3x+20=35\\3x=35-20\\3x=15[/tex]
Dividing both sides by 3
[tex]\frac{3x}{3}=\frac{15}{3}\\x=5[/tex]
For 5 games, the cost will be equal for each option.
Keywords: function, division
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determine whether each equation below does or does not represent a proportional relationship. support your answer using either a table or a graph
equation A: y = x
equation B: y = x+2
Answer:
As the ratio for all the points on the equation y = x is same. Hence, the equation y = x REPRESENTS a proportional relationship.As the ratio for all the points on the equation y = x+2 is not same. Hence, the equation y = x + 2 DOES NOT REPRESENT a proportional relationship.Step-by-step explanation:
Solving equation A: y = x
Let us consider the given equation A:
y = x
Putting x = 1 in y = xy = x
y = 1 ∵ x = 1
Hence, (1, 1) is the ordered pair of y = x
Putting x = 2 in y = xy = x
y = 2 ∵ x = 2
Hence, (2, 2) is the ordered pair of y = x
Putting x = 3 in y = xy = x
y = 3 ∵ x = 3
Hence, (3, 3) is the ordered pair of y = x
Putting x = 4 in y = xy = x
y = 4 ∵ x = 4
Hence, (4, 4) is the ordered pair of y = x
Putting x = 5 in y = xy = x
y = 5 ∵ x = 5
Hence, (5, 5) is the ordered pair of y = x
Lets us consider all the ordered pairs i.e. (1, 1), (2, 2), (3, 3), (4, 4) and (5, 5) to make a table for y = x.
y x
1 1
2 2
3 3
4 4
5 5
As from the table, lets take the ratio of every point i.e. y/x
For (1, 1), the ratio will be y/x ⇒ 1/1 = 1For (2, 2), the ratio will be y/x ⇒ 2/2 = 1For (3, 3), the ratio will be y/x ⇒ 3/3 = 1For (4, 4), the ratio will be y/x ⇒ 4/4 = 1For (5, 5), the ratio will be y/x ⇒ 5/5 = 1Hence, the ratio for all the points on the equation y = x is same. Hence, the equation y = x REPRESENTS a proportional relationship. Please also check the graph in attached figure a.
Solving equation A: y = x +2
Let us consider the given equation A:
y = x + 2
Putting x = 1 in y = x + 2y = x + 2
y = 1 + 2 ⇒ 3 ∵ x = 1
Hence, (1, 3) is the ordered pair of y = x + 2
Putting x = 2 in y = x + 2y = x + 2
y = 2 +2 ⇒ 4 ∵ x = 2
Hence, (2, 4) is the ordered pair of y = x + 2
Putting x = 3 in y = x + 2y = x + 2
y = 3 + 2 ⇒ 5 ∵ x = 3
Hence, (3, 5) is the ordered pair of y = x + 2
Putting x = 4 in y = x + 2y = x + 2
y = 4 + 2 ⇒ 6 ∵ x = 4
Hence, (4, 6) is the ordered pair of y = x + 2
Putting x = 5 in y = x + 2y = x + 2
y = 5 +2 ⇒ 7 ∵ x = 5
Hence, (5, 7) is the ordered pair of y = x + 2
Lets us consider all the ordered pairs i.e. (1, 3), (2, 4), (3, 5), (4, 6) and (5, 7) to make a table for y = x + 2.
y x + 2
1 3
2 4
3 5
4 6
5 7
As from the table, lets take the ratio of every point i.e. y/x
For (1, 3), the ratio will be y/x ⇒ 3/1 = 3For (2, 4), the ratio will be y/x ⇒ 4/2 = 2For (3, 5), the ratio will be y/x ⇒ 5/3 = 5/3For (4, 6), the ratio will be y/x ⇒ 6/4 = 3/2For (5, 7), the ratio will be y/x ⇒ 7/5 = 7/5Hence, the ratio for all the points on the equation y = x+2 is not same. Hence, the equation y = x + 2 DOES NOT REPRESENT a proportional relationship. Please also check the graph in attached figure a.
Keywords: equation, graph
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Which equation represents the line that is perpendicular to graph of 4x+3y=9 and passes through (-2,3)
The equation of the line which is perpendicular to the line 4x + 3y = 9 and passes through the point (-2,3) is y = 3/4x + 4.5.
Explanation:The original equation is 4x + 3y = 9. To start off, rewrite this equation in slope-intercept form (y = mx + b) to help find the slope. After isolating y, the equation turns into y = -4/3x + 3. So, the slope of the original line is -4/3.
Perpendicular lines have slopes which are negative reciprocals of each other, thus the slope of the line perpendicular to the given line is the negative reciprocal of -4/3, which is 3/4 (m = 3/4 for the second line)
We are also given that the line we are looking for passes through the point (-2,3). Use the point-slope form of a line, given by y - y1 = m(x - x1), where m is the slope, and (x1, y1) is the given point. Substituting in the values, you get:
y - 3 = 3/4(x - -2).
Simplifying the equation, we find that the line perpendicular to 4x + 3y = 9 and passing through (-2, 3) is y = 3/4x + 4.5
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Sphere radius 7 inches what's the volume
Answer:
The volume of sphere is 1436.03 inches³.
Step-by-step explanation:
Given:
The radius of sphere = 7 inches.
Now, to find the volume.
So, to get the volume we put the formula:
[tex]Volume=\frac{4}{3} \pi r^3[/tex]
Taking the value of π = 3.14
[tex]Volume=\frac{4}{3}\times 3.14\times {7}^3[/tex]
[tex]Volume=\frac{4}{3}\times 3.14\times 343[/tex]
[tex]Volume=\frac{4}{3}\times 1077.02[/tex]
[tex]Volume=\frac{4308.08}{3}[/tex]
[tex]Volume=1436.03\ inches^3[/tex]
Therefore, the volume of sphere is 1436.03 inches³.
Step-by-step explanation: To find the volume of the sphere, start with the formula for the volume of a sphere.
Volume = [tex]\frac{4}{3} \pi r^{3}[/tex]
Notice that our sphere has a radius of 7 inches so plugging into the formula, we have [tex](\frac{4}{3})(\pi)(7 in.)^{3}[/tex].
Start by simplifying the exponent. (7 in.)³ is equal to 7 inches x 7 inches x 7 inches or 343 in³ so we have [tex](\frac{4}{3}) (343 in.^{3})(\pi)[/tex].
Next, 4 x 343 is 1,372 which gives us [tex]\frac{1,372\pi }{3}[/tex]. Notice that 1,372 doesn't divide by 3 so this is our final answer for the volume of the sphere.
The circumference of a circle is 8.97cm. Find the length of the diameter. Give your answer rounded to 2 DP. PLEASE HELP ME
Length of diameter is 2.86 cm
Solution:
Given that circumference of a circle is 8.97 cm
To find: length of diameter
We can use the formula for circumference of circle to find radius and then we can find diameter
The circumference of circle is given as:
[tex]C = 2 \pi r[/tex]
Where "r" is the radius of circle and [tex]\pi[/tex] is a constant equals to 3.14
Substituting c = 8.97 and [tex]\pi = 3.14[/tex]
[tex]8.97 = 2 \times 3.14 \times r\\\\8.97 = 6.28 \times r\\\\r = \frac{8.97}{6.28}\\\\r = 1.4283[/tex]
Thus radius of circle is 1.4283 cm
Finding diameter of circle
diameter = 2(radius)
diameter = 2(1.4283) = 2.8566
On rounding to two decimal point we get, 2.86
Thus length of diameter is 2.86 cm
4. A case of eggs contains 15 dozen eggs. What is the AP unit cos
egg if a case of eggs costs $34.20?
Answer:
.19 cent per egg
Step-by-step explanation:
15*12=180
34.20/180= .19
The unit cost per egg is $0.60 when a case of eggs costs $34.20.
Explanation:The unit cost per egg is $0.60.
To find the cost per egg when a case contains 15 dozen eggs costing $34.20, you first calculate the cost per dozen by dividing the total cost by the number of dozens (15). Then, you divide the cost per dozen by 12 to find the cost per egg. In this case, $34.20 divided by 15 gives $2.28 cost per dozen. Finally, $2.28 divided by 12 equals $0.60, so each egg costs $0.60.
Write 48.4% as a decimal and as a simplified fraction
Answer:
121/250
Step-by-step explanation:
Look at the picture
The decimal equivalent of 48.4% is 0.484 and the simplified fraction equivalent is 242/500.
Explanation:To convert 48.4% to a decimal, you simply divide the percentage by 100. Therefore, 48.4% as a decimal would be 0.484.
To write 48.4% as a simplified fraction, we start with the fraction that percentage represents, which is 48.4 / 100. However, both these numbers are divisible by 2 which simplifies it to 242 / 500. That is the simplest form of the fraction represented by 48.4%.
Learn more about Percentage Conversion here:https://brainly.com/question/32297219
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A car salesman had $65,100 in sales. He earned $1,953 in commission. What percent commission did he earn. Explain your answer.
How long was the loan
Interest earned = $299
Principal = $1300
Interest rate = 7%
Answer:
1. The percent commission earned is 3%.
2. The loan period is 3.29 years.
Step-by-step explanation:
1. Salesman has $65,100 in sales. He earned $1,953 in commission.
Let the percent commission earn be x%
Therefore, x% of the sales equals $1,953
[tex]\frac{x}{100} of $65,100 = $1,953[/tex]
[tex]\frac{x}{100} * 65100 = 1953\\\frac{65100x}{100} = 1953[/tex]
We cross multiply
[tex]\frac{65100x}{100} = 1953\\65100x = 1953 * 100\\65100x = 195300[/tex]
Divide both side by the coefficient of 'x' (65100)
[tex]\frac{65100x}{65100} = \frac{195300}{65100} \\x = 3[/tex]
Therefore, the percent commission earned is 3%
2. Interest (I) = $299 Principal (P) = $1300 Rate (R) = 7%
The formula for finding interest is given as: [tex]I = \frac{PRT}{100}[/tex]
Therefore, substituting into the formula, we have:
[tex]299 = \frac{1300 * 7 * T}{100}[/tex]
We are finding the time it takes the loan to earn an interest of $299
[tex]299 = \frac{1300 * 7 * T}{100} \\299 = \frac{9100T}{100}[/tex]
We cross-multiply:
[tex]299 * 100 = 9100T\\29900 = 9100T[/tex]
Divide both side by the coefficient of T (9100)
[tex]\frac{29900}{9100} = \frac{9100T}{9100}\\T = 3.29[/tex]
Therefore, the time taken for the loan to earn such interest is approximately 3.29 years