3 years ago

What is the value of the expression 5^2 - 4^3

Mathematics

1 answer:

hram777 [196]3 years ago

8 0

The answer is C. -39 .

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The ratio of boys to girls in a class is 4:5, what fraction of the class is boys

scoundrel [369]

Boys:girls = 4/5

boys = 4/(4+5) = 4/9 of the class

8 0

4 years ago

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Where v is the final velocity (in m/s), u is the initial velocity (in m/s), a is the acceleration (in m/s²) and s is the distanc

Anna11 [10]

Answer:

The final velocity v is 21.74 m/s.

Step-by-step explanation:

Given:

$\textrm{initial velocity} = u = 9\ m/s\\\textrm{acceleration} = a = 7\ m/s^{2}\\\textrm{distance} = s = 28\ m$

To find:

$\textrm{final velocity} = v = ?$

Solution:

As we know the third equation of motion is represented as

$v^{2} = u^{2} + 2\times a\times s\\$

Substituting the values u, a and s in the above equation we get

$v^{2} = 9^{2} + 2\times 7\times 28\\ =81 + 392\\=473\\$

$v =\±\sqrt{473} \\v =\sqrt{473} \ \textrm{as acceleration is positive v is also positive}\\v = 21.74\ m/s$

7 0

3 years ago

A pair of pant and a t-shirt cost $25. If the pant cost $7.28 more than the shirt, how much did the pant cost?

Lena [83]

$16.14 =pants

Explanation:

$25-$7.28=17.72

17.72/2 =8.86

8.86+7.28=16.14

25-16.14=8.86 shirt

I hope that helped ..

4 0

3 years ago

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What is one way to find the number of grams in 6 kilograms?

gavmur [86]

Answer:

Multiply by 1000

Step-by-step explanation:

6kg equals 6000g

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3 years ago

Harley is on a trip with her dad. Her dad tells her that they've traveled 182.6 miles and they are 83% of the way to their desti

Natali5045456 [20]

0.83x=182.6

x=182.6/0.83

x=220 miles total trip length.

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3 years ago