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Effectus [21]
3 years ago
8

Solve 4r2 – 16 = 84. {±4} {±3} {±6} {±5}

Mathematics
1 answer:
Marta_Voda [28]3 years ago
4 0
4r²<span>– 16 = 84
4r</span>² = 84+16
4r²= 100
r²=25
r=√25
r=<span>±5</span>
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Kamila [148]

Answer:

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y/a −b= y/b −a

multiply each side by ab to clear the fractions

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distribute

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subtract ay on each side

by -ay -ab^2 = ay-ay -a^2b

by -ay -ab^2 =-a^2b

add ab^2 to each side

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factor out the y on the left, factor out an ab on the right

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divide by (b-a)

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5 0
3 years ago
The temperature was –15⁰F and decreased by 10⁰ F. Which statement represents the resulting temperature in degrees Fahrenheit?
Alex_Xolod [135]

Answer:

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Step-by-step explanation:

8 0
3 years ago
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Step-by-step explanation:

to know the answer to that

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5 0
2 years ago
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Ensure that y ou have copied this problem accurately from the original.

7 0
3 years ago
I need some help with this one
k0ka [10]
I believe the answer is 3
8 0
3 years ago
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