3 years ago

Is 10 the solution of the equation 4x - 8 = 31?

2 answers:

Tom [10]3 years ago

6 0

4x-8 = 31

4x = 31 + 8

4x = 39

x = 9.75

3 0

4x - 8 = 31
4x = 39
x = 9.75

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lora16 [44]

$a_{1}=-2 \\ \\ a_{2}=8 \\ \\ q= \frac{a_{2}}{a_{1}} \\ \\ q= \frac{8}{-2}=-4 \\ \\ a_{n}=a_{1}*q^{n-1} \\ \\ a_{n}=-2*-4^{n-1}$

7 0

3 years ago

valentina_108 [34]

We need the exponents law

$a^{bx}=(a^b)^x$
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a=3
b=1/2

then
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3 years ago

Andrew [12]

18 is the common denominator

5 0

3 years ago

Schach [20]

6

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3 0

3 years ago

Mekhanik [1.2K]

The correct answer should be -3/2

6 0

3 years ago