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ale4655 [162]
2 years ago
12

A variable needs to be eliminated to solve

Mathematics
1 answer:
lesya692 [45]2 years ago
6 0

Answer:

(7, - 7 )

Step-by-step explanation:

- 4x + y = - 35 → (1)

- 2x - y = - 7 → (2)

adding the 2 equations term by term will eliminate the y- term

(- 4x - 2x) + (y - y) = - 35 - 7

- 6x + 0 = - 42

- 6x = - 42 ( divide both sides by - 6 )

x = 7

substitute x = 7 into either of the 2 equations and solve for y

substituting into (1)

- 4(7) + y = - 35

- 28 + y = - 35 ( add 28 to both sides )

y = - 7

solution is (7, - 7 )

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Describe what the point (0,0) on the graph represents in terms of the situation being described by the graph. when the sales of the

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If you raise 4 to the 214th power, what is the units digit of the result
Len [333]
\begin{array}{lrlll}
4^1&\boxed{4}\\
4^2&1\boxed{6}\\
4^3&6\boxed{4}\\
4^4&25\boxed{6}\\
4^5&102\boxed{4}\\
4^6&409\boxed{6}
\end{array}\impliedby \textit{see the pattern for 4?}

notice, it goes 4,6 then 4, 6 again, and so on and so on
based on whatever exponent it may have

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3 years ago
A scientist is studying wildlife in Ohio and she estimates that the population of bats is tripling every year. If she had counte
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The number of bats that there would be in 2021 would be 768,000.

<h3>What would be the number of bats in 2021?</h3>

The formula that can be used to determine the future value of bats in 2021 is:

FV = P (1 + r)^n

Where:

  • FV = Future value
  • P = Present value = 3000
  • R = interest rate = 300%
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3000(1 + 3)^4

3000 x 4^4 = 768,000

To learn more about future value, please check: brainly.com/question/18760477

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2 years ago
Hailey has a summer job at the water slide park. She earns $9.50 an hour as a lifeguard, but never works more than 25 hours in a
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Carter paid $201.75 for a camera and a memory card. if the 32 gb memory
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The regular price of the camera is $227.

Given that, the total amount paid=$201.75 and the cost of the memory card=$12.35.

Cost of camera=201.75-12.35=$189.4

<h3>What is a discount?</h3>

A discount is a deduction from the usual price of something. To discount means to deduct an amount from the price.

Discount is given to the camera=20%.

The regular price of the camera=189.4+20% of 189.4

=189.4+0.2×189.4=189.4+37.88=$227.28

The estimation to the nearest the whole number is $227.

Therefore, the regular price of the camera is $227.

To learn more about discount visit:

brainly.com/question/3541148.

#SPJ1

8 0
2 years ago
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