3 years ago

Complete the solution of the equation. Find the value of y when x equals -1. -2x+7y=-54

Mathematics

1 answer:

svetoff [14.1K]3 years ago

4 0

Answer:

Step-by-step explanation:

-2(-1) + 7y = -54

2 + 7y = -54

-2 -2

7y = -56

Divide by 7

y = -8

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Neeeeed helpppppp please

MissTica

Answer:

Scale factor = 7

Step-by-step explanation:

Dilation with scale factor to map HEFG to DABC will be,

Scale factor = $\frac{\text{Dimension of Image DABC}}{\text{Dimension of preimage HEFG}}$

= $\frac{\text{Length of CD}}{\text{Length of GH}}$

Length of CD = Distance between two points C(0, -7) and D(-7, 0)

= $\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

= $\sqrt{(-7-0)^2+(0+7)^2}$

= $\sqrt{98}$

= $7\sqrt{2}$

Length of GH = Distance between G(0, -1) and H(-1, 0)

= $\sqrt{(-1-0)^2+(0+1)^2}$

= $\sqrt{2}$

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3 years ago

17. You have $75 in your bank account. Each week you plan to deposit $8 from your allowance and $10 from your paycheck

Vanyuwa [196]

Answer:

60 weeks

Step-by-step explanation:

195 = 75 + (10 + 8)w

195 - 75 = (10 + 8)w

120 = (10 + 8)w

120 = (2)w

120 ÷ 2 = w

60 = w

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3 years ago

100000000000000000000000000000000000000000+53624785326348756348927563482564328965342875634289573264

Arlecino [84]

Answer:

5.3624785e+55

Step-by-step explanation:

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3 years ago

Read 2 more answers

Evaluate the discriminant for x2-5x+4=0

FromTheMoon [43]

9 is your answer, hope this helps

8 0

2 years ago

What is the mean of the data set in the box below?<br> -8, -6, - 2, 0, -6, - 8. 4, 7, 8, 1

Andreas93 [3]

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3 years ago