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3 years ago

What should happen to both sides of the equation to isolate the variable?

Mathematics

1 answer:

LUCKY_DIMON [66]3 years ago

5 0

Answer:

If two expressions are equal to each other, and you add the same value to both sides of the equation, the equation will remain equal. When you solve an equation, you find the value of the variable that makes the equation true. In order to solve the equation, you isolate the variable

Step-by-step explanation:

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Last question. 50 points!

Shkiper50 [21]

w=-1.5

w=2

Answer:

Solution given:

$\sqrt{2w²-19w+31}+2=7-2w$

again

keep square root alone

$\sqrt{2w²-19w+31}=7-2w-2$

solve subtraction of 7-2

$\sqrt{2w²-19w+31}=5-2w$

Squaring on both side

$(\sqrt{2w²-19w+31})²=(5-2w)²$

2w²-19w+31=5²-2*5*2w+4w²

take terms one side

2w²-19w+31-25+20w-4w²=0

-2w²+w+6=0

2w²-w-6=0

doing middle term factorisation

2w²-(4-3)w-6=0

2w²-4w+3w-6=0

take common from each two term

2w(w-2)+3(w-2)=0

(w-2)(2w+3)=0

either

w=2

W=-3/2=-1.5

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2 years ago

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Problem Page Maya purchased a prepaid phone card for $30 . Long distance calls cost 18 cents a minute using this card. Maya used

Helen [10]

Her call lasted 17minutes

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3 years ago

Can someone help me do this

djyliett [7]

Answer:

See below

Step-by-step explanation:

It's hard to see your photo but if that say m∠T than your answer would be

m∠ L.

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Since you have two of the angles, you can also determine what m∠L and m∠T is equal to. The sum on all interior angles must be 180 degrees.

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Please help me thank you

andre [41]

Answer:

Its the last one

Step-by-step explanation:

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3 years ago