2 years ago

Solve the equation x2 + 7x = 30.

Mathematics

1 answer:

Law Incorporation [45]2 years ago

5 0

Answer:

2*7=14+6=30 points plz

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Step-by-step explanation:

first the parenthesis

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What is 20 divided by 10 but to the power or 2

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2 years ago

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a_sh-v [17]

A). They are supplementary angles meaning they add up to 180
So
B) (12x+8)+(3x+7)=180
12x+8+3x+7=180
15x+15=180
-15 -15
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x=11

Angle 1 is
12x+8
12(11)+8
132+8
140
Therefore measure of angle 1 is 140°

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3x+7
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40
Measure of angle 2 is 40°

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3 years ago

1. Type mmnn using exponents.

kompoz [17]

Step-by-step explanation:

$\bold{1.}\\\\\ mmnn=m^2n^2=(mn)^2\\\\\bold{2.}\\\\3x=5+7\\3x=12\qquad\text{divide both sides by 3}\\x=4\\\\\bold{3.}\\\\\dfrac{x}{3}=7\qquad\text{multiply both sides by 3}\\x=21\\\\\bold{4.}\\\\0.5x=12\qquad\text{multiply both sides by 2}\\1x=24\\x=24\\\\\bold{5.}\\\\4x-6=2x+4\qquad\text{add 6 to both sides}\\4x=2x+10\qquad\text{subtract 2x from both sides}\\2x=10\qquad\text{divide both sides by 2}\\x=5$

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3 years ago

Read 2 more answers

Solve the equation x2 + 7x = 30.​

Solve the equation x2 + 7x = 30.