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3 years ago

1.5 of 7.2 Could I also have an explanation? Thanks in advance!

Mathematics

2 answers:

geniusboy [140]3 years ago

6 0

Answer:

5.7 is the answer

Step-by-step explanation:

its telling you what is 1.5 out of 7.2 so you subtract 1.5 from 7.2 which will give you 5.7

sweet [91]3 years ago

5 0

Answer: 4.8

Explanation: 1.5 of 7.2 is the same as saying what is 7.2 divided by 1.5

Basically the same as 7.2÷1.5

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What is the unit rate for the proportional relationship represented by the equation y=4/5x

slava [35]

Answer:

the unit rate is 0.8x per unit y

Step-by-step explanation:

the proportional relationship is y = $\frac{4x}{5}$

this means that the constant of proportionality k = $\frac{4}{5}$ = 0.8

re-writing, we have

y = 0.8x

therefore, the unit rate is 0.8x per unit y

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3 years ago

What value of w makes the equation 3(-4W - 5) = -7(5 + w) true?

Westkost [7]

Answer: W= 4

Step-by-step explanation:

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3 years ago

Two boys and three girls are auditioning to play the piano for a school production. Two students will be chosen, one as the pian

Sergio039 [100]

The answer is 0.24

To calculate this, a multiplication rule is used. The multiplication rule calculates the probability that both of two events will occur. In this method, the probabilities of each event are multiplied. Here we have two events:

1. The probability that the pianist will be a boy,

2. The probability that the alternate will be a girl.

So, let's calculate these probabilities:

There are in total 5 children:

2 boys + 3 girls = 5 children.

1. The probability that the pianist will be a boy is 2 boys out of 5 children, which is 2/5.

2. The probability that the alternate will be a girl is 3 girls out of 5 children, which is 3/5.

The probability that the pianist will be a boy and the alternate will be a girl is:

2/5 × 3/5 = 6/25

6/25 × 4/4 = 24/100 = 0.24

3 0

3 years ago

Read 2 more answers

- 7th Grade Work - I rlly need help ; - ;

Tanya [424]

Answer:

The length would be 1.5x + 5.

Step-by-step explanation:

So first with this, note that 2 length + 2 height gives the perimeter of the rectangle.

Given this:

2(1/2x + 4) + 2(?) = 4x+18

x+8 + 2(?) = 4x+18

2(?) = 3x+10

? = 1.5x+5

1.5x + 5 = 1.5x + 5

The length would be 1.5x + 5.

To double check, by plugging in 1.5x + 5 back into the equation for the perimeter, you will get the same perimeter:

2(1.5x + 5) + 2(1/2x+4) = P

3x+10 + x+8 = P

4x + 18 = P

8 0

3 years ago

My lawn is 17ft wide and 20ft long, each square foot of lawn gets 1350 new snowflakes per min how much snow in kilograms accumul

Alina [70]

Answer:

46.818 kg

Step-by-step explanation:

First, find the surface area of your yard. This is found by multiplying the length and width.

The equation for this is (l*w)=sa

So,

l=20ft

w=17ft

(20*17)= 340 square feet.

So, if each square foot gets 1350 new flakes per minute, you are going to find how much the entire yard gets in a minute by multiplying the surface area by 1350.

So,

(340*1350)= 459000 flakes for the entire yard in one minute.

Since there is 60 minutes in an hour, multiply 459,000 by 60.

459,000*60= 27,540,000 new flakes in the yard per hour.

Now, to find the weight in milligrams:

27,540,000*1.7= 46,818,000 mgs

Finally, because a kilogram is equal to one million milligrams (mg),

46,818,000/1,000,000= 46.818 kg

7 0

3 years ago