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MAXImum [283]
3 years ago
5

If R is the midpoint of QS , find QS (QR = 5x-3 and RS =21-x)

Mathematics
2 answers:
Finger [1]3 years ago
3 0

Answer:

QS is 34

Step-by-step explanation:

We find x first. We set each side equal to each other to do so.

5x-3=21-x

6x=24

x=4

Next we find QS value. We add each side.

5x-3+21-x

4x+18

Then we plug in x to find numeric value.

4(4)+18

34

Arlecino [84]3 years ago
3 0

Answer:

QS is 34

Step-by-step explanation:

R is the midpoint of QS

So, QR= RS

(QR = 5x-3 and RS =21-x)

QR= RS

Plug in QR  and RS

5x-3=21-x

Add x on both sides

6x-3= 21

Add 3 on both sides

6x= 24

Divide by 6 on both sides

x= 4

QS= QR+RS

QS=5x-3+21-x

QS=4x+18

Plug in 4 for x

QS=4(4)+18=34

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