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Elodia [21]
3 years ago
7

6 = -4x + y -5x - y = 21 Please Help Fast!!!!!! Substitution

Mathematics
1 answer:
Vera_Pavlovna [14]3 years ago
5 0

Answer:

y = 4x + 6

-5x - 4x - 6 = 21

-9x - 6 = 21

-9x = 27

x = -3

y - 4(-3) = 6

y + 12 = 6

y = -6

(-3, -6)

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I need help with q5
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                                     0.2 x 100 =
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7 0
3 years ago
A park is rectangular with a length of ⅔ miles. If the area of the park is 3/9 square miles, what is the width?
Zielflug [23.3K]

Answer:

Area of the rectangular park = 2/3 square mile

Let us assume the width of the rectangular park = x

Then

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Then

Area of the rectangular park = Length * Width

2/3 = (8x/3) * x

2/3 = 8x^2/3

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2 = 8x^2

x^2 = 2/8

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x^2 = (1/2)^2

x = 1/2

So the width of the park is 1/2 feet.

Step-by-step explanation:

Brainliest would be nice

4 0
3 years ago
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The mean temperature for the first 7 days in January was 4 °C. The temperature on the 8th day was 3 °C. What is the mean tempera
Bad White [126]

Answer:

Mean temperature for the first 8 days was  3.88^\circ

Step-by-step explanation:

Mean = \frac{4\cdot 7+3\cdot 1}{8}

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Best Regards!

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Answer:

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Step-by-step explanation:

7 0
2 years ago
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