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Eddi Din [679]
2 years ago
14

Rewrite this equation into slope-intercept form. State the slope and y-intercept. -7x+9y=18

Mathematics
2 answers:
a_sh-v [17]2 years ago
5 0

Answer:

9y = 18 + 7x

y = 2 + 7/9x

Just rearrange and put into that form

DochEvi [55]2 years ago
5 0

Answer:

y = 7/9x + 2

Step-by-step explanation:

-7x+9y=18

9y = 7x + 18

y = 7/9x + 2

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ICE Princess25 [194]
Answer: a, c, e explanation: I did that test and got 100%
3 0
3 years ago
5x + 2 y = 7<br> 4x + y = 8
dsp73
4y.
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8 0
2 years ago
An aquarium with a square base has no top. There is a metal frame. Glass costs 8 dollars/m^2 and the frame costs 7 dollars/m. Th
Irina-Kira [14]
Given that the volume of the aquarium is 20m^3.

Volume = Area of Base x height

Area of Base = Volume / height = 20/h

Given that the aquarium has a square base.

Area of square = l^2

Thus, the length of the base of the aquarium is \sqrt{area \ of \ base} = \sqrt{ \frac{20}{h} }

The frame is to cover 8 sides with the length equal to the length of the base and 4 sides with the length of the height.

Thus, the total perimeter of the frame is given by 8\sqrt{\frac{20}{h}}+4h= \sqrt{64\left(\frac{20}{h}\right)}+4h = \sqrt{\frac{1,280}{h}}+4h

Area of the four side faces of the aquarium is 4 times the length of the base times the height = 4\times\sqrt{ \frac{20}{h} }\times h=\sqrt{16\left(\frac{20}{h}\right)h^2}=\sqrt{320h}

Total area to be covered by grass is the base and the four side faces and is given by \frac{20}{h}+\sqrt{320h}

Cost of the entire metal frame = 7\left(\sqrt{\frac{1,280}{h}}+4h\right)= \sqrt{49\left(\frac{1,280}{h}\right)}+7(4h) = \sqrt{\frac{62,720}{h}}+28h

Cost of the entire grass = 8\left(\frac{20}{h}+\sqrt{320h}\right)=\frac{160}{h}+\sqrt{64(320h)}=\frac{160}{h}+\sqrt{20,480h

Therefore, total cost in terms of the height, h, is given by

C=\sqrt{\frac{62,720}{h}}+28h+\frac{160}{h}+\sqrt{20,480h
3 0
3 years ago
When you divide an even number by an even number, is the resut always an even number
elena-14-01-66 [18.8K]

Answer:

false

Step-by-step explanation:

if you do 4/4 it is 1 which is odd

3 0
3 years ago
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Viefleur [7K]

Answer:

  x = -5

Step-by-step explanation:

We don't know what equation solver you're supposed to use. Here are the results from one available on the web.

8 0
3 years ago
Read 2 more answers
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