2 years ago

Identify the x- and y-intercepts 10x + 4y = -20

Mathematics

1 answer:

slavikrds [6]2 years ago

4 0

Answer:

x-intercept: -2

y-intercept: -5

Step-by-step explanation:

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Read 2 more answers

0/1 Solve the equation by completing the square. Round your answer to the nearest hundredth, if necessary x^2+18x=7

11111nata11111 [884]

Answer:

The solution to the equation is x = 0.38 or -18.38

Step-by-step explanation:

x^2+18x=7 can be properly written as

$x^{2} +18x =7$

To solve by completing the square, divide the coefficient of x by 2, square and then add to both sides

i.e 18/2 = 9

Then add 9² to both sides of the equation

$x^{2} +18x + 9^{2} = 7 + 9^{2}$

This becomes

$(x+9)^{2} = 7 + 81$

$(x+9)^{2} = 88$

$x+9 = \pm \sqrt{88}$

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$x = 0.38 or -18.38$

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