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Studentka2010 [4]
2 years ago
8

Solve for y 2x + y = 7 6x + 9 = 9y - 2x

Mathematics
2 answers:
irga5000 [103]2 years ago
5 0

Answer:


Step-by-step explanation:

what grade are u in?


NeX [460]2 years ago
4 0
This is a simultaneous equation
1)2x+y=7
2)-8x+9y=9

1)*4 (so 2x becomes 8x so we can add or take to get rid of x)

1)8x+4y=28
2)-8x+9y=9

2) + 1)

13y=37

Y=2.846153846


To check the answer is correct find x

8x+(4*2.84...)=28
8x=28-11.384..
8x=16.615..
X=2.0769..


Input into 2)

(-8*2.07..)+(9*2.84..)=9
It is equal to 9
So y is correct



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Elena is trying to draw a triangle with side lengths of 4 inches and 3 inches what could be the length of the third side in orde
earnstyle [38]

Elena should put a point where the two circles intersect and draw line segments connecting that point to points A and B to finish her triangle.

4 0
3 years ago
What would a piece 430 feet 3 inches cost if you get a 10% discount for the larger volume? A piece of wire cable 180 ½ feet long
alexgriva [62]
To get the answer to this question you would have to multiply these numbers.
The normal price appears to be 65.95 for 180.5 feet. 
First we could divide 430.25 by 180.5
This divides out to become 2.39027778.
We would then multiply This by our normal price for 180.5 feet, which is 65.95.
This gives us 157.63882.
We would next need to take the 10 percent off. The easiest way to do this is to multiply our price by .90
This would give us 141.484938.

3 0
3 years ago
A baseball team had $1,000 to spend on supplies. The team spent $185 on a new bat. New baseball cost $4 each. The inequality 185
Marta_Voda [28]

This question is incomplete

Complete Question

A baseball team had $1,000 to spend on supplies. The team spent $185 on a new bat. New baseballs cost $4 each.

The inequality 185 + 4b ≤ 1,000 can be used to determine the number of new baseballs (b) that the team can

purchase. Which statement about the number of new baseballs that can be purchased is true?

A. The team can purchase 204 new baseballs.

B. The minimum number of new baseballs that can be purchased is 185.

C. The maximum number of new baseballs that can be purchased is 185.

D. The team can purchase 185 new baseballs, but this number is neither the

maximum nor the minimum.

Answer:

D. The team can purchase 185 new baseballs, but this number is neither the maximum nor the minimum.

Step-by-step explanation:

The first step would be to solve the given equation:

185 + 4b ≤ 1000

4b ≤ 1000 - 185

4b ≤ 815

Divide both sides by 4

b ≤ 203.75

The maximum amount of baseballs the team can buy is 203. This means that they can buy 203 or less than that amount.

Of all the options give, option D is the correct option because the team can purchase 185 new baseballs, but this number is neither the maximum nor the minimum.

The maximum number of ball they can buy is 203 balls and the minimum is zero.

8 0
3 years ago
U divided by 25 =13 please do step by step and show work thanks :))
Anna71 [15]
Answer U/25=13
             U=13 divided 1/25
             U=13 multiply 25
             U=325
6 0
3 years ago
14 = 2y/5 what is the solution?
Gnom [1K]

Answer:

y=35

Step-by-step explanation:

y in (-oo:+oo)

14 = (2*y)/5 // - (2*y)/5

14-((2*y)/5) = 0

(-2/5)*y+14 = 0

14-2/5*y = 0 // - 14

-2/5*y = -14 // : -2/5

y = -14/(-2/5)

y = 35

y = 35

5 0
3 years ago
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