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vlabodo [156]
3 years ago
6

Use the substitution method to solve each linear system. 4x - 3y = -13,-2x + y = 4

Mathematics
1 answer:
Contact [7]3 years ago
8 0

Answer:

The solutions to the system of equations are:

x=\frac{1}{2},\:y=5

Step-by-step explanation:

Given the system of the equations

\begin{bmatrix}4x-3y=-13\\ -2x+y=4\end{bmatrix}

Isolate x for for 4x-3y=-13

4x-3y=-13

4x=-13+3y

Divide both sides by 4

x=\frac{-13+3y}{4}

substitute y=5

x=\frac{-13+3\cdot \:5}{4}

x=\frac{1}{2}

The solutions to the system of equations are:

x=\frac{1}{2},\:y=5

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Answer:

According to the passage, whales weight 300,000 pounds on average. Narwhales weigh 2,000 pounds on average.

Step-by-step explanation:

Since the question is extremely vague, I'll just answer what's the weight of whales and the weight of narwhals.

According to the paragraph, blue whales weigh 3×10^{5} pounds.

This is what we call scientific notation. You could solve it normally, or you could use a faster method.

Scientific notation states that the first number that you see, the three, is the first part of the answer. The exponent on the number of zero's that there is.

That means that the answer to 3×10^{5} you get 300,000.

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3 years ago
Please answer fast The vertices of a rectangle are located at the coordinates (1, 4), (1, 5), (6, 5),
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Answer:

See below ~

Step-by-step explanation:

<u>Drawing the rectangle</u> (Refer attachment)

<u>Horizontal sides</u>

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  • The horizontal sides of the rectangle are <u>5</u> units long

<u>Vertical sides</u>

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  • 2(6)
  • 12
  • The perimeter of the rectangle is <u>12</u> units

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2 years ago
What are the coordinates of Point X?<br> A. (3, –4)<br> B. (–3, –4)<br> C. (4, –3)<br> D. (4, 3)
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Answer:

3, -4

Step-by-step explanation:

Hi I really hope this helps you, Please mark as brainliest!

8 0
3 years ago
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Answer:

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Step-by-step explanation:

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1 year ago
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