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Mathematics

1 answer:

m_a_m_a [10]3 years ago

3 0

Answer:

Step-by-step explanation:

The problem is basically asking us to find the value on the graph corresponding to the x value of 1. We can draw a line with the equation x = 1(or just trace your finger up) to see that when x = 1, the output of the function is at the value 1 as well(the y value).

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What is 0.02×0.789÷3.099 equals

Vikki [24]

Step 1: Simplify 0.02 x 0.789 to 0.01578

0.01578 ÷ 3.0999

Step 2: Simplify 0.01578 ÷ 3.0999 to 0.0051

0.0051

Done! :) Decimal Form Would Be 0.0051

7 0

2 years ago

Solve the quadratic equation x2+8x−30=0 by completing the square.

diamong [38]

Answer:

$\bold{x=-4\pm\sqrt{46}}$

Step-by-step explanation:

$(a+b)^2=a^2+2ab+b^2\\\\\\x^2+8x-30=0\\\\\underbrace{x^2+2\cdot x\cdot 4+4^2}-4^2-30=0\\\\{}\qquad(x+4)^2\,-\,16-30=0\\\\{}\qquad\ \ (x+4)^2=46\\\\ {}\qquad\ \ x+4=\pm\sqrt{46}\\\\ {}\qquad\ \ x=-4\pm\sqrt{46}$