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Dennis_Churaev [7]

2 years ago

10

so i just did a math quiz and i was wondering if im trying to do Equations Involving Addition what to do i thought i was doing g

ood but got 2 out of 5

2 answers:

xeze [42]2 years ago

8 0

you should use the subtraction inverse of equality if you are doing an addition equation

wlad13 [49]2 years ago

4 0

What do you need help clarifying? Did you want to go over the questions you missed? (:

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What is 67% of 12? I NEED AN ANSWER QUICK.

professor190 [17]

The correct answer is C. you can get this by multilingual 67x0.12

4 0

3 years ago

150 - 1/2s = 120 + 1/4s

agasfer [191]

Answer:

s=40

Step-by-step explanation:

Combine s and 1/2.

150−s/2=120+1/4s

Combine 1/4and s.

150−s/2=120+s/4

Move all terms containing s to the left side of the equation.

150−3s/4=120

Move all terms not containing s to the right side of the equation.

−3s/4=−30

Multiply both sides of the equation by −4/3.

−4/3 x (−3s/4)=−4/3 x−30 => S=40

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2 years ago

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Whith graph shows a system of equations with a solution at (2,-1)?

aksik [14]

The solution to a system of equations is the point on a graph where the two lines intersect. The graph where the point of intersection is (2, -1) is the last graph. The last graph is the correct answer.

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3 years ago

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Ryan gained $10 on a stock in the stock market. How is his profit expressed as a rational number?

BabaBlast [244]

Sorry if im wrong it might be 24

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3 years ago

The Richter scale is used for measuring the magnitude of an earthquake. The Richter magnitude is given R = 0.67log(0.37E) + 1.46

natka813 [3]

Answer:

7.9982

Step-by-step explanation:

-The function for an earthquake's magnitude is given by R = 0.67log(0.37E) + 1.46

-E is energy in kwh.

#For 15,500,000,000 kilowatt hours the magnitude would be:

$R = 0.67\ log(0.37E) + 1.46,\ \ E=15,500,000,000 \ kwh\\\\\therefore R=0.67 \ log(0.37\times 15,500,000,000)+1.46\\\\\\=7.9982$

Hence, the earthquakes magnitude is 7.9982

7 0

3 years ago