Please help me with this math problem
if x is 1/2 and y is 1/4.what is answer of 4x÷y
Answer:
8
Step-by-step explanation:
4x ÷ y
x = 1/2
y = 1/4
4(1/2) ÷ 1/4
4 × 1/2 = 2
2 ÷ 1/4
2 × 4 = 8
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Lucas bought six packs of 25 pens each for four dollars per pack and sold each pen for $.25 how much was his profit?
Answer:
$13.50
Step-by-step explanation:
To find Lucas's profit, subtract the cost from his total gain.
Lucas bought 6 packs for $4 each.
6 * $4 = $24
His cost is $24.
In each of the 6 packs, there were 25 pens.
6 * 25 = 150 total pens
Lucas sold each pen for $0.25
150 * $0.25 = $37.50
$37.50 - $24 = $13.50
The length of a rectangle is 1 inch more than twice it’s width. If the perimeter of the rectangle is 20 inches, what are the dimensions of the rectangle?
Answer:
Step-by-step explanation:
P = 2(L + W).....perimeter of a rectangle formula
P = 20
L = 2W + 1
20 = 2(2W + 1 + W)
20 = 2(3W + 1)
20 = 6W + 2
20 - 2 = 6W
18 = 6W
18/6 = W
3 = W <==== the width is 3 inches
L = 2W + 1
L = 2(3) + 1
L = 6 + 1
L = 7 <===== the length is 7 inches
Answer:
Width = 3 inches
Length = 7 inches
Step-by-step explanation:
L = 1 + 2W
P = 20 inches
P = 2L + 2W
2L + 2W = 20 inches
Fill in known value (length)
2(1 + 2W) + 2W = 20 inches
Solve
2 + 4W + 2W = 20 inches
6W = 18 inches
Simplify
W = 3 inches
Width = 3 inches
Length = 2(3) + 1 = 7 inches
:)
What is the missing value in the table?
Input | Output
18 |
12 | 4
30 | 10
24 | 8
9 | 3
What are the digits of pii?
Step-by-step explanation: Pi is an irrational number 3.14159... which rounds to 3.14.
Mathematicians found out that when you try to write down what π is, the decimal the decimal places just keep going and going. This means it's impossible to find all the digits of π.
To solve many problems involving π, you just round it off to 3.14 and it will work. However, if you include more digits, your answer will be more accurate.
The first 100 digits of pi are below.
3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679
Pi, a key mathematical constant, can be approximated to 3.14 but extends infinitely. Each digit after the decimal point serves a purpose in precision in calculations. Digits form numbers and range from 0 to 9, with the decimal point establishing the value of the number.
Explanation:The digits of pi, which is a mathematical constant representing the ratio of a circle's circumference to its diameter, are numerous as pi extends infinitely beyond the decimal point. However, in most contexts, it is approximated to 3.14. These first two digits are usually sufficient for common calculations in geometry, note that pi includes many more digits in its full representation.
When it comes to number rounding, it is worth noting that each digit after the decimal point matters. In terms of importance from left to right, a digit would be replaced by a zero if the next immediate number is 5 or above; this next number then either rounds up the previous number or maintains it depending on if it's below or above 5.
Digits are the components making up a number. They range from 0 to 9 and can be put in a sequence to form a variety of numbers. The placement of the decimal point also plays a vital role in establishing the numeric value of the number.
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Only geniuses can answer this question! Also 20 points!
On a trip to visit relatives you drive 1,115.625 miles over the course of 21
hours and 15 minutes. What was the unit rate of the speed of your vehicle in miles
per hour? Round to the nearest tenth of a mile.
Answer:
Step-by-step explanation:
1,115.625 miles in 21 hrs and 15 min.....
15 minutes = 15/60 = 0.25 hrs......so they did it in 21.25 hrs
1,115.625 / 21.25 = 52.5 miles per hr <===
Has an x-intercept of (4,0) and a y- intercept of (0,-2)
Write the equation in standard form, slope intercept form and point slope form
Just to be different we'll start with intercept intercept form which says the line through x intercept (a,0) and y intercept (0,b) is
[tex]\dfrac x a + \dfrac y b = 1[/tex]
Through (4,0) and (0,-2) that's
[tex]\dfrac{x}{4} + \dfrac{y}{-2} = 1[/tex]
Multiply through by the common denominator of 4 for standard form:
x - 2y = 4
For slope intercept form we solve for y
-2 y = -x + 4
y = (1/2) x - 2
We see our slope is (1/2) and we go through (4,0) so point slope form is
y - 0 = (1/2)(x - 4)
y = (1/2)(x-4)
The equation is y = 1/2(x - 4), and converting this to standard form results in x - 2y = 4.
To find the equation of the line that passes through the x-intercept (4,0) and y-intercept (0,-2), we need to derive its slope and then write the equation in different forms:
Step 1: Calculate the Slope
The slope (m) is given by
m = (y2 - y1) / (x2 - x1).
Using the given intercepts (4,0) and (0,-2):
m = (0 - (-2)) / (4 - 0) = 2 / 4 = 1/2
Step 2: Slope-Intercept Form
The slope-intercept form is
y = mx + b, where m is the slope and b is the y-intercept. We know that the y-intercept, b, is -2.
Thus, the equation in slope-intercept form is:
y = 1/2 x - 2
Step 3: Point-Slope Form
The point-slope form is given by
y - y1 = m(x - x1).
Using the point (4,0):
y - 0 = 1/2(x - 4)
Which simplifies to:
y = 1/2(x - 4)
Step 4: Standard Form
Standard form is
Ax + By = C. To convert our slope-intercept form (y = 1/2 x - 2) to standard form, we follow these steps:
Multiply both sides by 2 to eliminate the fraction:
2y = x - 4
Rearrange to get integer coefficients on the left side:
x - 2y = 4
Thus, the equation in standard form is: x - 2y = 4
what three numbers have a range of 10 and a mean of 13
16,17,6
16-6 is 10 (range)
16+17+6=39
39/3 is 13. (mean)
Which expression correctly factors the polynomial?
x² – 36
A. (x - 6)^2
B. (X-6)(x+6)
C. (x-9)(x+4)
D. x(x - 36)
Answer:
B
Step-by-step explanation:
(x-6)(x+6)
x * x = x^2-6 * x = -6x6 * x = 6x-6 * 6 = -36x^2 + 6x - 6x -36The -6x cancels out the other 6x
x^2 - 36
1. Which of the following could be
the measurements of two
complementary angles?
Answer:
A
Step-by-step explanation:
Complementary angles have a sum of 90 degrees
Answer:
A. 7degree + 83degree
Step-by-step explanation:
which satisfy with the formula
complementary angle = sum of two angles equal to 90 degree
7+83 =90
what is the graph -3x -8y = 24
Answer:
Step-by-step explanation:
Answer:
[tex]y=3/8 -3\\[/tex]
Step-by-step explanation:
Since the equation is in standard form, you have to the equation in y = mx + b format, to graph the equation, -3x -8y = 24 in y = mx + b format is y = [tex]\frac{3}{8}[/tex] - 3. Just graph the equation from there. I hpe this helps you!
the amount of water remaining in a fish tank is given by the equation y = 175 - 15x where y is the number of gallons of water remaining
fter x minutes,
That is the approximate time it would take to drain the fish tank?
A. 12 minutes
B. 85 minutes
C 160 minutes
D. 175 minutes
E. 190 minutes
Answer:
The correct answer is A. 12 minutes.
Step-by-step explanation:
Let's solve for y, when x = 12, as follows:
y = 175 - 15x
y = 175 - 15 * 12
y = 175 - 180
y = - 5
This result means that after 12 minutes the fish tank would be completely drained and if it's needed 5 additional gallons of water could also be drained. It's not necessary to continue making more calculation with the the other options given because this is the right answer.
The correct answer is A. 12 minutes.
There are 75 balloons in each package how many balloons are in 20 packages
Answer:
1500
Step-by-step explanation:
75 ballons in one package, mulitiply 75 by 20 to get 1500 total balloons
Answer:1500
Step-by-step explanation:
the area of a rectangle is given by the expression x^2+5x+4. If the length of one side is given by x+2, what is the length of the other side?
Answer: [tex]\frac{(x+4)(x+1)}{x+2}[/tex]
Step-by-step explanation:
The area of a rectangle [tex]A[/tex] is given by the multiplication of its base [tex]b[/tex] by its height [tex]h[/tex]:
[tex]A=(b)(h)=x^{2}+5x+4[/tex] (1)
In addition we are told the length of one of the sides (let's choose [tex]b[/tex]) is:
[tex]b=x+2[/tex] (2)
Substituting (2) in (1):
[tex](x+2)h=x^{2}+5x+4[/tex] (3)
Isolating [tex]h[/tex]:
[tex]h=\frac{x^{2}+5x+4}{(x+2)}[/tex]
Factoring in the numerator:
[tex]h=\frac{(x+4)(x+1)}{x+2}[/tex] This is the length of the other side of the rectangle
an 8 oz drink cost 2.16 an a 10 oz drink cost 2.75 which is better why
Answer:
The better one? 8 oz
Step-by-step explanation:
You might be wondering why. You divide the cost by the oz. (or like a kind of capacity measurement or like weigh) For example, 2.16/ 8 is 0.27, that means per oz it is 0.27. Then, you find it for a 10 oz that costs 2.75, that is equal to 0.275. 0.275 is more than 0.27 so a 8 oz must be better to buy.
Answer: 8 oz drink
Step-by-step explanation: In this problem, we are asked to determine which of the following drinks is a better buy.
A 8 oz drink that for $2.16 or a 10 oz drink for $2.75.
Since the drinks that we are comparing are different sizes, to determine which drink is a better buy, we first need to find the unit price of each drink which in this case is the cost per ounce of each drink.
For our first drink, since $2.16 is the cost for 8 oz, to find the cost per ounce, we divide 8 into 2.16 to get 0.27. So the 1 ounce drink has a unit price of 0.27 cents per ounce.
For our second drink, since $2.75 is the cost for 10 oz, to find the cost per ounce, we divide 10 into 2.75 to get 0.275.
Finally we want to know which drink is a better buy so we are looking for the drink with the lower unit price. Since 0.27 cents is less than 0.275 cents, the 8 oz drink has the lower unit price and is therefore the better buy.
Alana bought 3/8pound of Swiss cheese and 1/4 pounds of American cheese.which pairs of fractions are equivalent to the amounts Alana bought?
Final answer:
Equivalent fractions for 3/8 could be 6/16 or 12/32, and for 1/4, they could be 2/8 or 4/16, achieved by multiplying both the numerator and denominator by the same number.
Explanation:
The student asked which pairs of fractions are equivalent to 3/8 pound of Swiss cheese and 1/4 pound of American cheese. To find equivalent fractions, we multiply or divide both the numerator and the denominator of the fraction by the same number. For example, if we multiply the numerator and denominator of 3/8 by 2, we get 6/16, which is equivalent to 3/8. Likewise, if we multiply the numerator and denominator of 1/4 by 2, we get 2/8 which is equivalent to 1/4. Another pair of equivalent fractions can be found by multiplying 3/8 and 1/4 each by 4, resulting in 12/32 and 4/16 respectively.
A computer company has a special going in which all customers receive a free monitor and scanner with the purchase of a new computer. It costs the company $393.29 to make each computer, $151.44 to make each monitor, and $46.39 to make each scanner. The computers are then sold, with the free monitor and free scanner, for $1,196.91 each. Approximately how much profit will the company make if 408 customers take advantage of their special? (Round to the nearest 50 dollars.) A. $300,000.00 B. $550,000.00 C. $240,000.00 D. $380,000.00
Answer:
C, $ 240,000.00
Step-by-step explanation:
Company cost: 393.29 + 151.44 + 46.39 = 591.12
Profit each computer: 1196.91 - 591.12 = 605.79
408 customers: 605.79 x 408 = 247162 ≈ 240000
A path of a toy rocket thrown upward from the ground at a rate of 208 ft/sec is modeled by the quadratic function h(t) = -16t +208t. When will the rocket reach its maximum height? What will be the maximum height?
Answer:
The time = 6.5 seconds and the maximum height reached by the rocket = 676 feet
Step-by-step explanation:
A path of a toy rocket thrown upward from the ground at a rate of 208 ft/sec is modeled by the quadratic function h(t) = -16[tex]t^{2}[/tex] +208t.
We have to find when the rocket will reach its maximum height.
When the rocket reaches its maximum height, [tex]\frac{dh}{dt}[/tex] = 0.
h(t) = -16[tex]t^{2}[/tex] +208t
[tex]\frac{dh}{dt}[/tex] = - 32t + 208 = 0
t = 6.5 seconds
At t = 6.5 seconds it is at maximum height.
Maximum height = - 16[tex]\times (6.5^{2} ) + 208\times 6.5[/tex]
= 676 feet
Answer:
Time taken = 6.5s . Maximum height = 676 feet.
Step-by-step explanation:
To find the maxima of height function use differentiation ie, h(t) will be maximum when [tex]\frac{dh(t)}{dt} = 0[/tex] .
[tex]h(t) = -16t^{2} + 208t\\\frac{dh(t)}{dt}= -32t + 208[/tex]
[tex]\frac{dh(t)}{dt} = 0[/tex] ⇒ -32t +208 = 0
32t = 208
[tex]t = \frac{208}{32} = 6.5[/tex]
For maximum height put t = 6.5 in h(t),
Maximum height = -16×6.5×6.5 + 208×6.5
=676 feet.
What’s that precent 250 of 275
Answer:
Percent 250 of 275 is 90.9%
Step-by-step explanation:
We have to find 250 is what percent of 275.
Let X be the percentage, then
=> X = [tex]\frac{250}{275} \times 100[/tex]
Now simplyfying the above relation we get
=> X = [tex] 0.909\times 100[/tex]
=> => X = 90.9 %
Hence 250 is 90.9% of 275
Just 2 questions I need help on !! Picture below
Question # 4
Answer:
Total number of cameras left to bid on = 3/5
Step-by-step Explanation:
To determine:
What fraction of the total number of cameras is left to bid on?
Solution Steps:
Total number of antique cameras contributed by a local shop = 10The number of cameras accepted for bids = 4Total number of cameras left to bid on = 10/10 - 4/10
= 6/10
= 3/5 ∵ As 6/10 = 3/5
Hence, total number of cameras left to bid on = 3/5
Question # 5
Answer:
The remaining portion of tickets = 17/100
Step-by-step Explanation:
To determine:
What portion of the tickets remain?
Solution Steps:
The total number of tickets = 100The number of tickets that were sold in first week = 83The remaining portion of tickets = 100/100 - 83/100
= 17/100
Hence, the remaining portion of tickets = 17/100
Keywords: fraction, number
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An ice cream shop offers two ice cream cones. the waffle cone holds 12 ounces and is 5 inches tall. the sugar cone also holds 12 ounces and is 8 inches tall. Which cone has a larger radius?
The waffle cone has a larger radius compared to the sugar cone.
Explanation:
The radius of a cone can be found using the formula:
radius = volume / height / pi
Both cones have the same volume of 12 ounces, so we can use this formula to compare their radii:
For the waffle cone: radius = 12 / 5 / pi = 0.766
For the sugar cone: radius = 12 / 8 / pi = 0.477
Therefore, the waffle cone has a larger radius compared to the sugar cone.
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The waffle cone has a larger radius of approximately 2.03 inches compared to the sugar cone's radius of approximately 1.61 inches.
To determine which cone has a larger radius, we need to calculate the radius of each cone using the volume formula for a cone. Since both cones hold the same volume (12 ounces), we'll convert this to cubic inches (since 1 ounce is approximately 1.8 cubic inches, 12 ounces is roughly 21.6 cubic inches).
The volume formula for a cone is:
V = (1/3)πr²h
Where V is the volume, r is the radius, and h is the height.
Waffle Cone:
Volume (V) = 21.6 cubic inches
Height (h) = 5 inches
Therefore, we have:
21.6 = (1/3)πr²(5)
Solving for r, we get:
21.6 = (5/3)πr²
r² = 21.6 / ((5/3)π)
r² = 12.97 / π
r ≈ sqrt(4.13)
r ≈ 2.03 inches
Sugar Cone:
Volume (V) = 21.6 cubic inches
Height (h) = 8 inches
Therefore, we have:
21.6 = (1/3)πr²(8)
Solving for r, we get:
21.6 = (8/3)πr²
r² = 21.6 / ((8/3)π)
r² = 8.1 / π
r ≈ sqrt(2.58)
r ≈ 1.61 inches
Comparing the two radii, the waffle cone has a larger radius of approximately 2.03 inches, while the sugar cone has a smaller radius of approximately 1.61 inches.
how can i solve this and this and this and this?
Answer:
DF = 3 , ∠B = 28° , ∠P = 105° , QR = 11.6 , ∠M=45°,LN = 8.5
Step-by-step explanation:
As ΔABC≅ΔDEF ,
DF = AC and ∠B = ∠E because corresponding parts of congruent triangles are equal.
∴DF = 3 and ∠B= 28°
In the next part,
as ΔLMN≅ΔPQR,
∠P = ∠L , QR = MN , ∠M = ∠Q , LN = PR as corresponding parts of congruent triangles are equal.
∴∠P = 105° , QR = 11.6 , ∠M = 45° , LN = 8.5
how many solutions can be found for the following linear equation ? 6 (4w + 8) = 12(2w + 4)
Answer:
you can only find an Infinite amount of solutions.
Step-by-step explanation:
Answer: do some math right now kehd you trash
Step-by-step explanation:
get a life
Shawn charges $15 per hour cow mowing lawn. How many hours did he work last week if he spent $45 on gas and saved the remaining $285?
Answer:
He worked 22 hours.
Step-by-step explanation:
285+45= 330
330 is the amount he earned in the first place.
330/ 15(amount earned per hour)= 22
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What word phrase is equivalent to the equation y=2x-3
Answer:
b)
Step-by-step explanation:
The soccer coach is 3 years less than twice the age of his youngest team member.
In y = 2x - 3, x represents the youngest team member. y represents the soccer coach.
2x is twice the age of the youngest team member.
-3 is three years less.
write as an algebraic expression the sum of d and 12 is 20
Answer:
The word sum corresponds to addition, which means:
d + 12 = 20
:)
Answer: d + 12 = 20
Step-by-step explanation: In this problem, we are asked to write an algebraic expression that represents the sentence.
The key to understanding this problem is by looking at the keyword "sum." The word sum means addition so reading this problem from left to right, the sum of d and 12 that's d + 12 "is 20" = 20.
So, d + 12 = 20 will be our algebraic expression.
The musical started at 1:10pm. It ended at 3:40pm. How long was the musical
Answer:
the music long is 2:30 hours
Step-by-step explanation:
1:10 + 2:30 = 3:40
Good Luck
Which expressions are equivalent
Answer:
5 cubed, 5 (6-3), and 5 to the power of 6 divided by 5 cubed.
Answer:
5^(6-3), 5^6/5^3, 5^3 or the 1st and 3rd on the top row and the 2nd on the bottom row
Step-by-step explanation:
So, how exponent rules work is if x to the power of any number is multiplied by x to the power of any number, you add the exponents. For example, 5^6 multiplied by 5^-3 is 6-3 which is 3, so the answer is 5^3. If you are dividing, lets say you have 5^6/5^3, you subtract. It would be 6-3, and the answer would be 5^3. When you have x to the power of a number, and you have that in parenthesis, and there is an exponent on the outside, only then do you multiply the exponents, and you cannot multiply exponents if there are more than one term in the parenthesis. For example, (x^5)^5 = x^25 because 5x5 = 25. But, if you have (x-5)^2 you cannot multiply the 2 out on both terms, you have to instead use FOIL. Using these rules, you can find that each of the answers above is equal to the answer of the first equation, 5^3.
5^(6) x 5^(-3) = 5^(6-3) = 5^(3)
5^6/5^3 = 5^(6-3) = 5^(3)
5^3 = 5^3
What is the answer ? Please use partial products to multiply 391 x 7
Answer:7 times what can give you 210 ... 30 so 181 and 7 times what gives you 140 ...20 so now 41 so 7 times 5 is 35 now you have 6
Step-by-step explanation:
The answers in the first box are 630, in the second box 9, and in the third box 2737 after multiplying 391 by 7.
What is an arithmetic operation?Arithmetic is an area of mathematics involving the study of numbers and the different operations that can be performed on them. Addition, subtraction, multiplication, and division are the four basic math operations.
We have given:
391
× 7
______
7 7×1 one
630 7×9 tens
+2100 7×3 hundred
________
2737
After multiplying 391 by 7 we will get, 2737
Thus, the answers in the first box are 630, in the second box 9, and in the third box 2737 after multiplying 391 by 7.
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