3 years ago

Which number is a solution of the inequality? X+4<7

1 answer:

4 0

The answer for the last one at the bottom, 5x + 17 > = 7, the answer is D. x> = -2

For the 1st one up top, the answer is B. 3.

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What is 9(x + 8) + x(5+4)

lina2011 [118]

Answer:

72+ 18x

Step-by-step explanation:

9x+72+5x+4x

72+ 18x

7 0

3 years ago

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How do i solve 4m^2+3m-1=0 using the quadratic formula

elixir [45]

Quadratic formulat is used when a^2+bx+c=0 x= $\frac{-b+/- \sqrt{b^{2}-4ac} }{2a}$ 4m^2+3m-1=0 a=4 b=3 c=-1 input x= $\frac{-3+/- \sqrt{3^{2}-4(4)(-1)} }{2(4)}$ x= $\frac{-3+/- \sqrt{9+16} }{8}$ x= $\frac{-3+/- \sqrt{25} }{8}$ x= $\frac{-3+/-5 }{8}$ x= $\frac{-8}{8}$ or $\frac{2}{8}$ x=-1 or 1/4