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Nadya [2.5K]
3 years ago
9

A boy is x Years old his sister is 4 years older if the sum of their ages is 18 what is his age​

Mathematics
1 answer:
Alex Ar [27]3 years ago
8 0

The answer would be 14 because 14+4 equals 18

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Find the unit rate.<br> 5/8 ounce per 1/4 pint
Katena32 [7]

Answer: 2.5 ounces/ pint

You can firstly turn your fractions into decimals 5/8 is equal to .625 and 1/4 is .25

Then you can divide .625 by .25 which is 2.5, So the unit rate is 2.5 ounces per pint.

4 0
3 years ago
Part 3: Find the inverse function, f –1(x), for the function f (x) = x2 + 10x + 28.
jasenka [17]

Answer:

-5+(√x-3) and -(√x-3)-5

Step-by-step explanation:

change f(x) to 'y' and then interchange x and y; then solve for y

y = x² + 10x + 28

x = y² + 10y + 28

you can use the Quadratic Formula to evaluate y² + 10y + 28 and will get:

-5+(√x-3) and -(√x-3)-5

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3 years ago
Evaluate v(x)=12-2x-5 when x=-2,0, and 5 .<br><br> v(-2)= <br><br> v(0)= <br><br> v(5)=
Vaselesa [24]

Step-by-step explanation:

v(-2)= 12-2x(-2)-5

=12+4-5

=16-5

=11

v(0)= 12-2x0-5

= 12-0-5

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=7

v(5)= 12-2x5-5

= 12-10-5

=12-5

=7

<em><u>Hope </u></em><em><u>it </u></em><em><u>helps </u></em>

6 0
2 years ago
Find the volume of the cone. Round your answer to the nearest hundredth.
valkas [14]

Answer:

v = 134.041 m³

Step-by-step explanation:

formula for volume of a cone is 1/3 πr²h

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v = 1/3 * 3.14 * 4² * 8

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3 years ago
Cheryl bought 10 pens for 25 each. How much did she pay for all 10 pens?
Paladinen [302]

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Step-by-step explanation:

10 pens at 25 each mean 1 pen is 25

so 10 x 25 = 250

8 0
2 years ago
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