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melisa1 [442]
2 years ago
9

What value of x makes this proportion true? 3/x = 15/40 A. 5 B. 28 C. 8 D. 105

Mathematics
2 answers:
Archy [21]2 years ago
5 0

Answer:

here the value of X should be 8 to make this proportion true

3/8=15/40

by cross multiplying

15*8=40*3

120=120

therefore the option C is correct

marysya [2.9K]2 years ago
3 0

Answer:

the answer is option C

hope it helps you

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Express 356 miles in 8 hours as a unit rate
andreyandreev [35.5K]
356/8 = 44.5

44.5 miles per hour, miles/hour
3 0
2 years ago
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If a child's knowledge of the alphabet is limited to the letters a, b, c, i, and e, and if the child writes two letters at rando
Savatey [412]
The formula for probability is # of favorable outcomes divided by the total number of outcomes. 

So we know that there are a total of 5 letters. The child writes two letters, so we will have x/5 * x/5. Now, it is asking, what is the probability that they are both vowels.

We can see that a, i, and e are vowels, so the probability if the child were to write one letter would be 3/5. Since he is writing 2, you can multiply 3/5 * 3/5, which would give you your answer, 9/25. Therefore the probability that both letters are vowels is 9/25.

Hope this helps! Please rate, leave a thanks, and mark a brainliest answer. (Not necessarily mine). Thanks, it really helps! :D


7 0
2 years ago
Monica has 2 gallons of milk to make milkshakes. Each milkshake contains 1 cup of milk. There are 128 ounces in 1 gallon and 8 o
OlgaM077 [116]

Answer: 32 cups of milk

Step-by-step explanation:

The first thing to do is to convert the gallons of milk to milkshakes so that you are able to convert easier to cups.

There are 128 ounces in 1 gallon and Monica has 2 gallons. The amount of milk Monica has in ounces is:

= 128 * 2

= 256 ounces

Each cup is capable of holding 8 ounces and there are 256 ounces available so the number of cups of milk is:

= 256 / 8

= 32 cups of milk

3 0
3 years ago
A map has a scale of 1/8 of an inch is equal to 1/4 of a mile. What is the unit rate of inches per mile
algol [13]

Answer:

1 inch per 2 miles.

Step-by-step explanation:

1/8 of an inch = 1/4 of a mile.

To solve the rate of inch per mile, multiply 8 to both sides (to make inch = 1)

(1/8)(8) = 1

(1/4)(8) = 8/4 = 2

The unit rate of inches per mile is 1 inch per 2 miles.

~

6 0
2 years ago
Study the image. Global winds. Blue arrows designate cool air. Red arrows designate warm air. Cool air moves from the South and
Fynjy0 [20]

Answer:

red arrow

Step-by-step explanation:

because it descirbes the air gfoing to the equator

7 0
2 years ago
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