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julsineya [31]
4 years ago
15

How to solve -5x+9y=7 and 5x-4y=-17

Mathematics
2 answers:
Ivenika [448]4 years ago
5 0
Answer is (-5,2)


You would use the elimination method and then you would find y and then plug the number in to find x. If you need help still just tell me.
ICE Princess25 [194]4 years ago
4 0
X=-5
y=-2
(-5,-2) is the correct answer

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The distance from Earth to the moon is approximately 1.2 x 10 to the power of 9 feet. The Apollo 11 spacecraft was approximately
Vlada [557]

Answer:

3,333,333 spacecraft

Step-by-step explanation:

To get the number of spacecraft that would fit between earth and moon <em>divide the distance by the length of the spacecraft</em>.

When 1.2\times10^{9} is divided by 360 the quotient will be 3,333,333 and the remainder will be 120.

It means 3,333,333 Apollo 11 spacecraft will fit between earth and moon but still 120 feet will remain and no more spacecraft can completely fit in it.

6 0
3 years ago
A water tank holds 216 gallons but is leaking at a rate of 3 gallons per week. A second water tank holds 324 gallons but is leak
Tems11 [23]

Answer:

54  

Step-by-step explanation:

216 - 3x = 324 -5x

subtract 216 from both sides

add 5x to both sides

divide both sides by 2x.

7 0
3 years ago
Need help with problem number 4? how do you get the answer?
givi [52]
You know what  10³  means . . . it's  1,000 .

So you have to divide  948  by  1,000 .

That shouldn't be a problem to do with a pencil,
and it should be a piece-o-cake with a calculator. 
6 0
3 years ago
Evaluate -2x 2 y, if x = -3 and y = -1.<br><br> -12<br> -18<br> 18<br> 12
xeze [42]

Answer:

18

Step-by-step explanation:

-2 x^2y

Let x=-3 and y = -1

-2 (-3)^2 (-1)

-2 (9) (-1)

18

5 0
3 years ago
Read 2 more answers
11:16 1
VikaD [51]

Answer:

268

Step-by-step explanation:

Divide the figure into 3 pieces, a triangle, a rectangle, and another rectangle.

Triangle area=18*(15+6+1) * 1/2, or 189

Rectangle 1= 4*11= 44

Rectangle 2= 7*5= 35

Add all up, get 268

3 0
3 years ago
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