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gladu [14]
3 years ago
9

Ralph is 3 times as old as Sara. In 4 years, Ralph will be only twice as old as Sara will be then. Find Ralph's age now. If x re

presents Sarah's age now, which of the following expressions represents Ralph's age in four years?
3x
6x
2x + 4
3x + 4
Mathematics
1 answer:
tino4ka555 [31]3 years ago
3 0

Answer:

2x + 4

Step-by-step explanation:

Let R = Ralph's age

and x = Sarah's age

          Then Ralph's age in 4 years = R + 4

       and Sarah's age in four years = x + 4

Thus,                                       R + 4 = 2(x + 4)

Distribute the 2                      R + 4  =     2x + 8

Subtract 4 from each side     R        =     2x + 4

Ralph's age is 2x + 4.

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Segments in Circles<br><br><br> TW=3, CW=x, TU=x+7, VW=6. Find the value of x.
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Answer:

x=2

Step-by-step explanation:

The diagram is attached below

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3 years ago
Given the function f(x)=2x-7. What is x when f(x)=17?
Eduardwww [97]

Answer:

x = 12

Step-by-step explanation:

Step 1: Define

f(x) = 2x - 7

f(x) = 17

Step 2: Substitute

17 = 2x - 7

Step 3: Solve for <em>x</em>

<u>Add 7 on both sides:</u> 24 = 2x

<u>Divide both sides by 2:</u> 12 = x

Step 4: Check

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