Answer:
g(granola bar) = $2 and a(apple) = $1
Step-by-step explanation:
This problem can be modeling as an equation systems with two unknows.
We can writting the equation systems as follows:
For Addison [tex]2g+6a=10[/tex] where "g" is a granola bar price, "a" an apple price, and 10 is the sum of both product prices in dollars.
For George [tex]2g+3a=7[/tex] where "g" is a granola bar price, "a" an apple price, and 7 is the sum of both product prices in dollars.
Ordering both equations:
[tex]\left \{ {{2g+6a=10} \atop {2g+3a=7}} \right.[/tex]
We're going to use the reduction method to solve this system of equations.
The reduction method consists of adding (or subtracting) the system equations to eliminate one of the unknowns.
1. Make sure that adding or subtracting the equations, some of the unknowns disappears.
We can see if we substracting both equations, the "g" unknown disappears.
[tex]\left \{ {{2g+6a=10} \atop {-(2g+3a)=-(7)}} \right.[/tex]
[tex]\left \{ {{2g+6a=10} \atop {-2g-3a=-7}} \right.[/tex]
Sustracting both equations, we obtain:
[tex]0g+3a=3[/tex]
[tex]3a=3[/tex]
[tex]a=\frac{3}{3} =1[/tex] which means that the value of an apple is $1.
2. We calculate the other unknown by substituting the value obtained from "a".
Substituting the value from "a" in the first equation:
[tex]2g+6(1)=10[/tex]
[tex]2g+6=10[/tex]
[tex]2g=10-6[/tex]
[tex]g=\frac{10-6}{2}[/tex]
[tex]g=\frac{4}{2}[/tex]
[tex]g=2[/tex] which means that the value of a granola bar is $2.
3. Finally, we verify the result by substituting the values obtained for "g" and "a" to see if it satisfy the equations.
For the first equation:
[tex]2g+6a=10[/tex] with g = 2 and a = 1
[tex]2(2)+6(1)=10[/tex]
[tex]4+6=10[/tex]
For the second equation:
[tex]2g+3a=7[/tex] with g = 2 and a = 1
[tex]2(2)+3(1)=7[/tex]
[tex]4+3=7[/tex]
The problem can be solved using a system of linear equations representing the cost relationships of granola bars and apples. By forming two equations from Addison's and George's purchases, you can find the cost of a granola bar (G) and an apple (A) using substitution or elimination.
Explanation:This question is a classic example of a system of linear equations where each equation represents a relationship between the cost of granola bars and apples. In this case, we have two people, Addison and George, and their respective costs for purchasing a combination of granola bars and apples.
We can set up two equations based on the information. Let's say G represents the cost of a granola bar and A represents the cost of an apple.
From Addison's purchase, we get the equation: 2G + 6A = $10
And from George's purchase, we formulate the equation: 2G + 3A = $7
You can solve this system of equations using various methods, such as substitution or elimination, to get G (cost of a granola bar) and A (cost of an apple).
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A sphere has a diameter of 15inches. what is the volume of the sphere rounded to the nearest tenth? use 3.14 for pi. A:441.6in 3 B:1766.3in 3 C3532.5 in 3 D: 14,230.0 in 3
Answer: B.
Step-by-step explanation:
Diameter = Radius divided by 2.
The volume formula of a sphere is V = 4/3 π r^3.
Radius of this problem = 7.5.
So, V = 4/3 π (7.5) ^3.
Once you "plug in" the radius and solve the equation, you get an answer of 1,766.3, rounded to the nearest tenth.
Don't forget the inches cubed!
The answer is B. 1766.3
which inequality matches the graph?
Answer:
2x - 3y < 7
Step-by-step explanation:
The coordinate is on 0 and this number is LESS THAN 0.
PLEASE MARK ME AS BRAINLIEST BECAUSE I REALLY NEED IT :(
How do i do mean and median
To find median your numbers have to be in numerical order from smallest to largest and the value that occurs more often and if no number is repeated then there is not median aka (mode)
To find mean you need to add all the number and divide the numbers that you add.
To find median you put the numbers least to greatest. Then, cross the numbers until you find an one number and that's it. If they are two numbers that left, you can add together and divide by two.
I hope this help you. :)
If a football team has a 90% chance of making a field goal for 3 points and a 35% chance of making a touchdown for 7 points, find the expected value of a touchdown.
PLEASE HELP!!!
2.7 points (my guess)
Answer: The expected value of touchdown is 2.45.
Step-by-step explanation:
Since we have given that
Probability of making a field goal for 3 points = 90%
Probability of making a touchdown for 7 points = 35%
So, Expected value of a touchdown would be
[tex]\sum xp(x)=7\times \dfrac{35}{100}=\dfrac{245}{100}=2.45[/tex]
Hence, the expected value of touchdown is 2.45.
If cosX = -0.2, and x is in quadrant II, then what it the value of sinX
[tex]\sin x>0[/tex] when [tex]x[/tex] is in quadrant II, so
[tex]\cos^2x+\sin^2x=1\implies\sin x=\sqrt{1-\cos^2x}=\sqrt{1-(-0.2)^2}\approx1.02[/tex]
Answer:
Step-by-step explanation:
note : cos²x + sin²x = 1
(- 0.2)² + sin²x =1
0.04 + sin²x = 1
sin²x = 1 - 0.04
sin²x = 0.96
sinx = √0.96 or sinx = - √0.96
in quadrant II : sinx > 0 ...so : sinx = √0.96
The price of a train ticket from Austin to Phoenix is normally $142.00 however, the train company is offering a special 65% discount to children under age 12. What is the sale price of a ticket from Austin to Phoenix for someone under 12?
Can someone pls help me I don’t get this question
Answer:
The sale price of a ticket from Austin to Phoenix for someone under 12 is $49.70
Step-by-step explanation:
Let
x----> the sale price of a ticket from Austin to Phoenix for someone under 12
we know that
100%-65%=35%=35/100=0.35
so
x=0.35*($142.00)
x=$49.70
Please answer right away
Answer:
independent
Step-by-step explanation:
Since no one else answered, figured you wouldn't mind if I do. :-), and you didn't use any CAPS.
How those two events (even and greater than 9) relate?
independent: YES. Can one happen without the other? Certainly. You see (1,1) is an even number that is not greater than 9. Equally, you see (6,5) which is greater than 9, but is not an even number.
inclusive: No, since there's a least one case where a pair number is not greater than 9. The opposite is also true... at least 1 number > 9 that is not even.
Mutually exclusive: No, since there numbers that are even AND greater than 9 (6,4) for example.
Conditional: No. Does one need the other to happen? Absolutely not.
1. Graph the function . f(x)= sin (x) -2
The graph of f(x) = sin(x) - 2 is a sinusoidal wave shifted down 2 units with period 2π and amplitude 1.
To graph the function, we can start by plotting the points where the graph intersects the x-axis. These points occur when sin(x) = 0, which is when x = 0, ±π, ±2π, and so on. Since the graph is shifted downwards by 2 units, these points will all be 2 units below the x-axis.
Next, we can plot the points where the graph reaches its maximum and minimum values. These points occur when sin(x) = ±1, which is when x = ±π/2 + 2πn, where n is any integer.
Since the graph is shifted downwards by 2 units, the maximum points will be 1 unit above the x-axis, and the minimum points will be 3 units below the x-axis.
Once we have plotted a few points, we can sketch the rest of the graph by connecting the points with a smooth curve. The graph should oscillate between -2 and 0, with a period of 2π.
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gema has 4
FT of wire how much wire does she need to wrap one meter of her garden?
Answer:
3.28 feet
Step-by-step explanation:
One meter equals to 3.28 feet.
The question isn't exactly clear what Gema wants to use her wire for, because "wrap one meter" isn't correct.
You wrap something around something else... and you can't wrap something around a meter. You can wrap around a square meter by doing the perimeter... but then you'd need more than meter to do the perimeter of a square meter (the perimeter can be around 4 meters).
So, assuming she has a length of 1 meter to cover, she would need 3.28 feet.
Find the eighth term of the
geometric sequence, given the
first term and common ratio.
a1=6 and r=-1/3
Answer:
a(8) = -0.0027
Step-by-step explanation:
The most general formula for a geometric sequence is a(n) = a(1)*r^(n-1), where a(1) is the first term and r is the common ratio.
Here, the formula becomes a(n) = 6*(-1/3)^(n-1).
Substitute 8 for n to find the eighth term:
a(8) = 6*(-1/3)^(8-1), or a(8) = 6(-1/3)^7, or a(8) = -0.0027
The eighth term of the geometric sequence with the first term of 6 and a common ratio of -1/3 is -6/2187.
To find the eighth term of a geometric sequence, we can use the formula for the nth term of the sequence, which is given by an = a1rn-1, where a1 is the first term and r is the common ratio. In this case, the first term (a1) is 6 and the common ratio (r) is -1/3. To calculate the eighth term (a8), we substitute the values into the formula and get:
a8 = 6 ×(-1/3)8-1
a8 = 6 × (-1/3)7
a8 = 6 ×(-1/2187)
a8 = 6 ×(-1/2187) = -6/2187
Once we simplify, we find that the eighth term is -6/2187.
im kinda stuck
35-x=29
Answer:
6
Step-by-step explanation:
first subtract 29 from 35, then you get the difference, which is 6!
Hello There!
We have an equation “35 - x = 29”
To solve this we can use addition.
29 plus some number = 35.
29+5 = 34 so add 1 more and you get 35.
X=6
A recipe for sabayon calls for 2 egg yolks, 3 tablespoons of sugar, and 1⁄4 cup of white wine. After cracking the eggs, you start measuring the sugar, but accidentally put in 4 tablespoons of sugar. How can you compensate?
Answer:
Step-by-step explanation:
A recipe for sabayon calls for 2 egg yolks, 3 tablespoons of sugar, and ¼ cup of white wine. After cracking the eggs, you start measuring the sugar, but accidentally put in 4 tablespoons of sugar. How can you compensate?
Note that we put in 4/3 more sugar than we wanted, because 3(4/3) = 4
So we need to increase eveything else by 4/3
So 2(4/3) = 8/3 = 2 +2/3 egg yolk and (1/4)(4/3) =4/12 = 1/3 cup of wine
To counterbalance the additional tablespoon of sugar in the recipe, you could increase the other ingredients by a third as well. Hence, you'd require roughly 3 egg yolks and 1/3 cup of white wine.
Explanation:In this recipe situation, since you accidentally put in 4 tablespoons of sugar instead of the required 3 tablespoons, you've essentially increased the sugar quantity by a third. To compensate for this, your best option would be to increase the quantities of the other ingredients by a third as well. Therefore, you would need:
Using these measurements, you should retain the balance of ingredients in your recipe. Nevertheless, remember that cooking often involves personal taste. You might want to adjust the recipe according to your taste preferences afterwards.
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Please help me with this question.
Step-by-step explanation:
First, reflect over the y-axis:
(1, -2) → (-1, -2)
Then, rotate 180° around the origin:
(-1, -2) → (1, 2)
which equation represents the parabola shown on the graph? y^2=-2x y^2=-8 y^2=-2y y^2=-8y
Answer:
Choice B is correct
Step-by-step explanation:
The graph of the parabola opens towards the left. This implies that the general form of the equation of the parabola will be;
[tex]y^{2}=f(x)[/tex]
Nevertheless, the points (-2, -4) and (-2, 4) lie on the graph of the parabola. We substitute x = -2 in the equations having the form above.
In the second equation, we have;
[tex]y^{2}=-8(-2)\\\\y^{2}=16\\\\y=\sqrt{16}=+4, -4[/tex]
This is thus the equation of the parabola graphed.
Answer: D x^2=6y
Step-by-step explanation:
Jason ate 1/2 of a whole pizza. The next day, he shared the remaining pizza between himself and 2 friends. What fraction of the original pizza did each of them get?
Answer:
1/6
Step-by-step explanation:
jason ate 1/2, so only 1/2 of the pizza is left.
1 ÷ 2 = 1/2
he split it equally between himself and 2 friends (3 people)
1/2 ÷ 3
= 1/2 × 1/3
=1/6
The diagram below shows the dimensions of Tessa’s garden.
C) Tessa decided that she liked the shape of her garden but wanted to have 2 times the area. She drew a design for a garden with every dimension multiplied by 2. Explain the error in Tessa’s design.
Answer:
Tessa's mistake was to have multiplied each dimension by two instead of multiplying by a square root of two.
Step-by-step explanation:
we know that
If two figures are similar, then the ratio of its areas is equal to the scale factor squared
Let
z -----> the scale factor
x ----> the area of the enlarged garden
y ----> the area of the original garden
[tex]z^{2}=\frac{x}{y}[/tex]
we have that
If Tessa multiplies each dimension by 2, then the scale factor equals 2.
[tex]z=2[/tex]
substitute
[tex]2^{2}=\frac{x}{y}\\\\ 4=\frac{x}{y}\\\\x=4y[/tex]
The area of the enlarged garden will be equal 4 times the area of the original garden
so
If Tessa wanted to have twice as much surface, she must multiply each dimension by a square root of 2.
therefore
Tessa's mistake was to have multiplied each dimension by two instead of multiplying by a square root of two
3g+5+3g+5+3g+5 Simplify!!!!!! PLZZ
Answer:
9q + 15
Step-by-step explanation:
3g+5+3g+5+3g+5
Combine like terms
= 9q + 15
Answer:
15+9g
Step-by-step explanation:
Marco is carrying two cylinder-shaped cans. Each can has the same height
and cross-sectional area as the other. Which of the following best describes
the relationship between the cans according to Cavalieri's principle?
Answer:
Choice D
Step-by-step explanation:
The Cavalieri's principle states that if two or more solids have identical cross-sectional area as well as height, then the solids will have equal volume.
Therefore, the volumes of the cylinders are the same
Answer:
The volumes of the cylinders are the same.
Step-by-step explanation:
Type the correct answer in each box.
A circle is centered at the point (-7, -1) and passes through the point (8, 7).
The radius of the circle is _____
units. The point (-15, __) lies on this circle.
The radius of the circle is 17 uints and the point (-15,-16) or (-15,14) lies on the circle.
step by step explanation is here,
centre of circle(h,k)=(-7,-1)
if the circle passes through the point (8,7)
then the distance between (8,7) and (-7,-1) represents the radius.
so, r^2= (x2-x1)^2 + (y2-y1)^2
or, r^2=(-7-8)^2 +(-1-7)^2
or, r^2=(-15)^2 +(-8)^2
or, r^2=225+64
or, r^2=289
or, r=17 units
now the equation of circle is
(x-h)^2 +(y-k)^2 =r^2
or, (x+7)^2 +(y+1)^2 =289
or, x^2 +14x +49 + y^2 + 2y+ 1=289
or, x^2 + y^2 + 14x +2y-239=0
puttimg x=-15,
or, (-15)^2 + y^2 +14×(-15) + 2y -239=0
or, y^2 + 2y -239+225-210=0
or, y^2 + 2y -224=0
If you slove y, then you will get 14 and -16.
The radius of the circle is 17.
The point (-15, 14) lies on the circle.
Given that:
A circle is centered at the point (-7, -1) and passes through the point (8, 7).
That is:
Center of the circle = (-7, -1)
A point on the circle = (8, 7)
The equation of the circle is:
(x - a)² + (y - b)² = r²
Here (a, b) is the center and r is the radius.
Substituting the given center.
(x - -7)² + (y - -1)² = r²
(x + 7)² + (y + 1)² = r²
Substitute points (8, 7).
(8 + 7)² + (7 + 1)² = r²
r² = 289
r = 17
So, the radius of the circle is 17.
So, the equation of the circle is:
(x + 7)² + (y + 1)² = 289
Substitute x = -15.
(-15 + 7)² + (y + 1)² = 289
(y + 1)² = 225
y + 1 = 15
y = 14
Hence the radius is 17 and the point is (-15, 14).
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Find the value of each trigonometric ratio
:) Hope this answers your question :)
how to find volume of cube?
Answer:
V=a3
Step-by-step explanation:
To find the volume of any cube you need to know the length, width and height. The formula to find the volume multiplies the length by the width by the height. The good news for a cube is that the measure of each of these dimensions is exactly the same. Therefore, you can multiply the length of any side three times.
Measure a side of the botom and then multiply it by 2 (That's the area), then multiply the result with the height: Area X Height = Volume. :)
hope you understand my answer LoL
Which number line represents this expression?
-8 + 5
PLEASE HELP ME!!!
I NEED THIS FINISHED NOW, PLEASE HELP ME!!!
I believe it’s the third one
What type of triangle is shown?
equiangular triangle
acute triangle
right triangle
obtuse triangle
Answer:
right triangle
Step-by-step explanation:
We know that the total angles of the triangle are 180 degrees:
(x) + (4x-10) + (2x+15) = 180
7x - 10 + 15 =180
7x + 5 = 180
7x = 180 - 5
7x = 175
x = 175÷ 5 = 25
Now we calculate each angle
x=25
4x-10= (4*25) -10=100-10=90
2x+15=(2*25)+15=50+15=65
Because we have a right angle, then the triangle is right triangle
Answer:
right angle
Step-by-step explanation:
dont let the look of the triangle fool you
5 4/5 b+6 3/4 −(2 11/15 +7 7/12 )
The value of the given expression is equal to the [tex]\frac{29b}{5}-3\frac{17}{30}[/tex].
We have given that,
[tex]5\frac{4}{5}b+6\frac{3}{4}-\left(2\frac{11}{15}+7\frac{7}{12}\right)[/tex]
We have to determine the,
[tex]=\frac{29}{5}b+6\frac{3}{4}-\left(2\frac{11}{15}+7\frac{7}{12}\right)[/tex]
What is the expression?The expression consists of numbers and arithmetic operators. It does not contain equality or inequality symbols. The expression consists of unknown variables.
[tex]=\frac{29}{5}b+\frac{27}{4}-\left(2\frac{11}{15}+7\frac{7}{12}\right)[/tex]
[tex]=\frac{29}{5}b+\frac{27}{4}-\left(\frac{41}{15}+7\frac{7}{12}\right)[/tex]
[tex]=\frac{29}{5}b+\frac{27}{4}-\left(\frac{41}{15}+\frac{91}{12}\right)[/tex]
[tex]=\frac{29b}{5}+\frac{27}{4}-\frac{619}{60}[/tex]
[tex]=\frac{29b}{5}-\frac{107}{30}[/tex]
[tex]=\frac{29b}{5}-3\frac{17}{30}[/tex]
The value of the given expression is equal to the [tex]\frac{29b}{5}-3\frac{17}{30}[/tex].
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Will give brainliest
Answer:
quadratic: y = x^2 + 4x + 4
Step-by-step explanation:
Notice that each y value is the square of an integer.
4 = 2^2
9 = 3^2
16 = 4^2
etc.
This is a quadratic equation.
The first ordered pair is (0, 4). 4 is 2^2, so add 2 to x and rthen square the quantity. (0 + 2)^2 = 2^2 = 4. This also works for the other values of x.
The equation is
y = (x + 2)^2
y = x^2 + 4x + 4
Answer: quadratic: y = x^2 + 4x + 4
Find the measure of BAD
Answer:
22.5°
Step-by-step explanation:
The inscribed angle theorem tells us that the measure of an inscribed angle is half of the central angle swept out by the same arc. Here, the arc BD sweeps out a central angle of 45°, so the measure of angle BAD must be half that, or 45/2 = 22.5°
Find the mean of the following data set.
8, 5, 15, 12, 10
50
10
12.5
14
8+5+15+12+10= 50 / 5 = 10
What is the effect on the volume of a sphere if the radius is divided by 3?
For this case we have by definition, that the volume of a sphere is given by:
[tex]V = \frac {4} {3} \pi * r ^ 3[/tex]
Where:
r: It is the radius of the sphere
If the radius is divided by 3 we have:
[tex]\frac {r} {3}:[/tex]
[tex]V = \frac {4} {3} \pi * (\frac {r} {3}) ^ 3\\V = \frac {4} {3} \pi * \frac {r ^ 3} {27}\\V = \frac {4} {81} \pi * r ^ 3[/tex]
ANswer:
the volume decreases considerably because the denominator increases
Please help I don’t know how to do this!
Answer:c
Step-by-step explanation:
The answer is the top one.
Hope this helps!
A freight carrier charges $0.57 for a package weighing up to one ounce. A company is shipping a package weighing 224 grams what is the cost to ship the package in dollar and cents?
Answer:
$ 4.50
Step-by-step explanation:
Given:
Charges of shipping package up to 1 ounce= $0.57
charges of shipping package of 224 grams=?
Converting grams into ounces
1 gram = 0.035274 ounces
224 grams = x ounces
By cross-multiplication we get
224(0.035274)= x ounces
7.90137= x
224 grams= 7.90137 ounces
Now finding charges of shipping package of 7.90137 ounces
Charges of shipping package up to 1 ounce= $0.57
charges of shipping package of 7.90137 ounces= $ x
By cross-multiplication we get
$x= 7.90(0.57)
= 4.50
Hence the cost to ship the package in dollar and cents is $4.50
i.e. 4 dollars and 50 cents!