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Arada [10]
3 years ago
7

What is 7x+5y=-7 and 9x-2y=-9

Mathematics
2 answers:
Brilliant_brown [7]3 years ago
8 0
X=-1 and y=0. I hope.

dedylja [7]3 years ago
6 0
1. X= - 1 5y/7 

2. X= 2y/9 - 1

I hope this helps. :)
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Graph the line that passes through the points (8,0) and (2,6) and determine the
pantera1 [17]

Answer:

y= -x+ 8

Step-by-step explanation:

4 0
3 years ago
What is 15x+8y less than or equal to 64
navik [9.2K]
Less than, because if you add 15+8 it equals 23 so less than
5 0
3 years ago
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statuscvo [17]

Answer:

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Step-by-step explanation:

8 0
2 years ago
Please help me with this math question I really need help ;/. I'll give brainliest if u help.
Darya [45]

Step-by-step explanation: You have to substitute the numbers in for x & y

(0, -5): YES

3x - 4y - 8 = 12

3(0) - 4(-5) - 8 = 12

0 + 20 - 8 = 12

20 - 8 = 12

12 = 12


(4, -2): YES

3x - 4y - 8 = 12

3(4) - 4(-2) - 8 = 12

12 + 8 - 8 = 12

20 - 8 = 12

12 = 12


(8, 2): NO

3x - 4y - 8 = 12

3(8) - 4(2) = 12

24 - 8 = 12

16 = 12


(-16, -17): YES

3x - 4y - 8 = 12

3(-16) - 4(-17) - 8 = 12

-48 + 68 - 8 = 12

20 - 8 = 12

12 = 12


(-1, -8): NO

3x - 4y - 8 = 12

3(-1) - 4(-8) = 12

-3 + 32 = 12

29 = 12


(-40, -34): NO

3x - 4y - 8 = 12

3(-40) - 4(-34) - 8 = 12

-120 + 136 - 8 = 12

16 - 8 = 12

8 = 12


Hope this help you!!! :)

7 0
3 years ago
Find the surface area of the cylinder to the nearest tenth of a square unit. use 3.14 for pi
Alborosie

Given:

  • Height of cylinder is 18.2 cm
  • Radius of cylinder is 3 cm

~

To Find?

  • Surface area

~

Solution:

Using formula:

  • Surface area of cylinder = 2πr (h + r)

~

Substituting values in the formula:

\longrightarrow \sf 2 × 3.14 × 3 (18.2 + 3)

\longrightarrow \sf 6.28 × 3 (21.2)

\longrightarrow \sf 18.84 × 21.2

\longrightarrow \sf 399.4 cm²

~

  • Hence, (B) 399.4 cm² is right answer.
6 0
2 years ago
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