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lina2011 [118]
3 years ago
11

Which of these strategies would eliminate a variable in the system of equations? ​8x+8y=2 8x+5y=1 ​ Add the equations. (Choice B

) B Subtract the bottom equation from the top equation. (Choice C) C Multiply the top equation by 1/2,then subtract the bottom equation from the top equation.
Mathematics
2 answers:
harkovskaia [24]3 years ago
7 0

Answer:

B. Subtract the bottom equation from the top equation.

Step-by-step explanation:

When looking at the two equations:

8x + 8y = 2

8x + 5y = 1

We can easily get rid of the x variable by subtracting the two equations from each other since the terms are equivalent. This would allow us to solve for the y value, which we could plug into the an equation to solve for the x value.

Lady_Fox [76]3 years ago
6 0

Answer:

Subtract the bottom equation from the top equation.

Step-by-step explanation:

i made sure it was the answer which is in khan academy.

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Snowcat [4.5K]
A Coefficient is the answer
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3 years ago
The table shows the relationship
Airida [17]

The linear relationship which exists between the change in weight and number of days of hibernation in a hedgedog can be modeled using the equation y = - 0.03 + 0

  • Change in weight per day of hibernation = - 0.03
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A linear model can be created using the data in the table given using a regression calculator or excel ;

The linear model obtained in the form y = m + bx is :

  • y = - 0.03x + 0
  • y = change in weight
  • x = number of days of hibernation
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  • The slope value of the function gives the change in weight value per number of days of hibernation ; which is -0.03.

  • Using the regression equation, substitute, the vlaue of x = 115
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Therefore, the change in weight after 115 days of hibernation is - 3.45 ounces.

Learn more :brainly.com/question/18405415

8 0
2 years ago
At a school event there were 96 girls .the ratio of number of girls to the number of boys was 4:5
valina [46]
144, 4:6 simplifies to 2:3, if you divide 96 by 2 you get 48, and 48 x 3 = 144
8 0
3 years ago
Which is closest to the height of the building?<br> (Round to nearest tenth
ioda

Answer:

let \: it \: be \: x \\  \cos(70 \degree)  =  \frac{12}{x}  \\ x =  \frac{12}{ \cos(70 \degree) }  \\ x = 35.1 \: ft

height =  \sqrt{ {35.1}^{2}  -  {12}^{2} }  \\  =  \sqrt{1088.01}  \\  = 33.0 \: ft

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What number is a solution of both |x-3|=2 and |9-x|=8?
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1-3=2

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HOPE THIS HELPS
8 0
4 years ago
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