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Allisa [31]
3 years ago
6

4x−4y=-2 and −9x−4y ​ =-3 solve by adding please !!!

Mathematics
1 answer:
jeyben [28]3 years ago
7 0
1. Add 4x back into -2, you now have -4y=-4x-2. Add +4 from y and now you are at y=-4x+2 and this is the answer!

2. Add -9x back into -3, you now have -4y=9x-3. Add +4 from y and now you are at y=9x-7 and this is your answer!!

I hope this helped! Brainliest? :) -Raven❤️
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Find The slope of the line described<br> by x+2y=8
Harman [31]

Answer:

Slope = m = \frac{-1}{2}

Step-by-step explanation:

The equation of a line in  slope-intercept form  is.

y = mx + b   ----->(eq 1)  

∴ m is slope

x+2y=8

subtract x from both sides.

x - x +2y=  - x + 8

2y=  - x + 8

divide - 2 on both sides

\frac{2y}{2} = \frac{ - x + 8}{2}

y = \frac{ - x}{2} + \frac{8}{2}

y = \frac{ - 1}{2}x + 4 ----->(eq 2)  

By comparing (eq 1) and (eq 2)  

m = \frac{-1}{2}

Slope = m = \frac{-1}{2}

7 0
3 years ago
Juan made $200 after working 10 hours. Jill made $300 in 15 hours. Who makes more money per hour?
kirill115 [55]

Answer:

A. They make the same amount

Step-by-step explanation:

You can use the cross multiplication method to find the answer:

$ hrs

200 × 10

300 15

200 × 15 = 3000

300 × 10 = 3000

8 0
3 years ago
Chase bought 5 chicken wings for $9.50. If Chase spent $26.60, how many chicken wings did he buy?
yan [13]

Find the price of 1 wing:

9.50 / 5 = 1.90 per wing

Divide total spent by price per wing:

26.60 / 1.90 = 14

Answer: 14

5 0
3 years ago
Read 2 more answers
How do you find and triangles area? please step by step :]​
Vladimir79 [104]
A = ½ (b × h) is the formula! Let me know if I can help further:)
3 0
3 years ago
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Hey guys so im in a little trouble i need some help please. I got 3 i just need 4,5,6,7,8,9,10 please and also i need step by st
Minchanka [31]

Answer:

4. x= -6

5. x= 7

6. x= -18

7. x= 8

8. x= 7

I'll do 9 and 10 in a separate answer

Step-by-step explanation:

4. Multiplying a negative with another negative always equals a positive, so replace x with -6, multiply -6 and -3 and you'll get 18.

5. To make it simple, think "what minus 3 equals 11?" So in this case, multiplying 2 by 7 would = 14, and that minus 3 is 11.

6. Divide a negative by a positive to get a negative answer. -9 + 6 = -3, but first we have to get 9. So since the fraction is x divided by 2, you'd replace x with -18 to get -9.

7. -3 x 8 is -24, + 11 is -13.

8. What minus 7 equals 21? 28. So replace x with 7. (7 x 4 = 28), subtract 7 from 28, and then you'll have 21.

6 0
3 years ago
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