My answers
1.A
2.C
3.D
4.A
5.A
6.D
7.B
8.D
9.D
10.C
1.
Write the following ratio in simplest form: 32 min:36 min
(1 point)
8:98:3632:9128:144
2.
Marie saved $51. On Wednesday, she spent $8 of her savings. What ratio represents the portion of her total savings that she still has left?
(1 point)
43:88:5143:5159:51
3.
The price of 8.4 ounces of crackers is $2.42. What is the unit price? Round your answer to the nearest cent.
(1 point)
$0.15 per ounce$3.47 per ounce$28.81 per ounce$0.29 per ounce
4.
Jonah needs to purchase 30 juice packs for his class. While shopping, Jonah discovers the following prices for comparable juice packs. Which offers the best unit price?
(1 point)
15 packs for $3.955 packs for $2.2020 packs for $6.2010 packs for $3.20
5.
Solve the proportion. Where necessary, round to the nearest hundredth.
Start Fraction 8 over 2 End Fraction equals Start Fraction x plus 3 over 4 End Fraction
(1 point)
131716
6.
A dozen apples cost $2.55. At this rate, how much would 8 apples cost?
(1 point)
$20.40$3.83$0.21$1.70
7.
Use cross products to determine which of the following pairs of ratios cannot form a proportion.
(1 point)
8.
Solve the following proportion.
Start Fraction 2 over 15 End Fraction equals Start Fraction 13 over x End Fraction
(1 point)
3901.732.3197.5
9.
ΔABC and ΔDEF are similar. Find the values of x and y.
Triangle ABC is shown with side AB labeled y, side BC labeled 12, and side CA labeled 21. Triangle DEF is shown with side DE labeled 6, EF labeled 4, and FD labeled x.
(1 point)
x = 7, y = 12x = 21, y = 12x = 14, y = 18x = 7, y = 18
10.
The scale factor for two similar rectangles is 3. If the area of the smaller rectangle is 8 m2, what is the area of the larger rectangle?
(1 point)
24m2192m272m2108m2
All are ok except #7 ??
and your answer formatting still sucks.
is this right
come on I need answers RIGHT NOW or I might flunk 8th grade math
To check your answers, we can go through each question individually and compare the given options with the correct answers.
1. Write the following ratio in simplest form: 32 min:36 min.
To simplify the ratio, we need to find the greatest common divisor (GCD) of 32 and 36, which is 4. Then we divide both numbers by the GCD.
So, the simplified ratio is 8:9.
The correct answer is 8:9.
2. Marie saved $51. On Wednesday, she spent $8 of her savings. What ratio represents the portion of her total savings that she still has left?
We need to find the remaining amount of savings. Subtracting the amount spent ($8) from the total savings ($51), we get $43.
So, the ratio representing the remaining savings is 43:51.
The correct answer is 43:51.
3. The price of 8.4 ounces of crackers is $2.42. What is the unit price? Round your answer to the nearest cent.
To find the unit price, we divide the total price by the number of ounces.
Dividing $2.42 by 8.4 ounces, we get approximately $0.29 per ounce.
The correct answer is $0.29 per ounce.
4. Jonah needs to purchase 30 juice packs for his class. While shopping, Jonah discovers the following prices for comparable juice packs. Which offers the best unit price?
To find the best unit price, we need to divide the total price by the number of packs for each option.
Calculating the unit price for each option:
- 15 packs for $3.95: $3.95/15 = $0.263 per pack
- 5 packs for $2.20: $2.20/5 = $0.44 per pack
- 20 packs for $6.20: $6.20/20 = $0.31 per pack
- 10 packs for $3.20: $3.20/10 = $0.32 per pack
The best unit price is $0.263 per pack for the option of 15 packs for $3.95.
The correct answer is 15 packs for $3.95.
5. Solve the proportion: 8/2 = (x+3)/4.
To solve this proportion, we can cross-multiply.
8 * 4 = 2 * (x + 3)
32 = 2x + 6
Subtracting 6 from both sides, we have:
26 = 2x
Dividing both sides by 2, we get:
x = 13.
The correct answer is 13.
6. A dozen apples cost $2.55. At this rate, how much would 8 apples cost?
To find the cost of 8 apples, we need to determine the cost per apple.
Dividing the total cost of a dozen apples ($2.55) by 12, we find the cost per apple is $0.2125 (rounded to the nearest cent).
Multiplying the cost per apple by 8, we get:
$0.2125 * 8 = $1.70.
The correct answer is $1.70.
7. Use cross products to determine which of the following pairs of ratios cannot form a proportion.
To use cross products, we multiply the extremes (first and last terms) and the means (middle terms) of each ratio and compare the results.
For example, if we have ratio a:b and c:d, we compare ad and bc.
Unfortunately, the options for question 7 are not provided, so we cannot determine which pairs of ratios cannot form a proportion. Please provide the options for further assistance.
8. Solve the following proportion: 2/15 = 13/x.
To solve this proportion, we can cross-multiply.
2x = 15 * 13
2x = 195
Dividing both sides by 2, we get:
x = 97.5.
The correct answer is 97.5.
9. ΔABC and ΔDEF are similar. Find the values of x and y.
The given information of the triangle sides tells us that the corresponding sides are proportional.
Since side AB is labeled y in triangle ABC and side DE is labeled 6 in triangle DEF, we can set up the proportion:
y/6 = 21/x.
Cross-multiplying, we get:
yx = 6 * 21,
yx = 126.
So, the values of x and y are x = 126/6 = 21 and y = 126/21 = 6.
The correct answer is x = 21 and y = 6.
10. The scale factor for two similar rectangles is 3. If the area of the smaller rectangle is 8 m^2, what is the area of the larger rectangle?
When the scale factor is applied to the dimensions of similar figures, the area is scaled by the square of the scale factor.
Since the scale factor is 3, the area of the smaller rectangle is 8 m^2, the area of the larger rectangle is:
8 * 3^2 = 8 * 9 = 72 m^2.
The correct answer is 72 m^2.
Please double-check your answer choices with the explanations provided to see if they align correctly.