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lys-0071 [83]
3 years ago
14

2x - y = 10 y = -x - 1 Solve the system of equations

Mathematics
1 answer:
alekssr [168]3 years ago
8 0
X= 9<span> and y= </span><span>8 ----------------------------------------------------------</span>
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PLEASE HELP 30 POINTS
ki77a [65]
4

one of the functions equals 0 while the other equals 4

0+4=4
8 0
3 years ago
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9. The surface area, S, of a right rectangular prism with length l, width w, and height h can be found using the formula below.
iren [92.7K]

Answer:

Surface area is 300 in Squared

Step-by-step explanation:

2(lw + wh + hl) = rectangular Prism Formula

Length- 12

Width- 9

Height- 2

So just Substitute the values.

2( 12 x 9+ 9 x2 + 12 x 2) = ?

2(108 +18+ 24)

2 x 150

= 300

6 0
2 years ago
6m - 8 = 2 + 9m - 1 Show your work and answer.
Nookie1986 [14]

6m-8 = 2+9m-1

6m-9m = 2+8-1

-3m=9

m = -3

3 0
3 years ago
How many liter of 15% weed killer mixture must be added to 5 liters of 10% weedkiller mixture to make 12% weed killer mixture?
finlep [7]

Answer: 3 1/3 liter

Brainliest? <3

let x equal the number of liters of 15% weedkiller.

your equation is .15 * x + .10 * 5 = .12 * (x + 5)

simplify to get .15 * x + .10 * 5 = .12 * x + .12 * 5

simplify further to get .15 * x + .5 = .12 * x + .6

subtract .12 * x from both sides and subtract .5 from both sides and simplify to get .03 * x = .1

divide both sides by .03 to get x = .1 / .03 = 3.333333333 rounded to 9 decimal digits.

you would need 3.333333333 liters of 15% solution to be added to 5 liters of 10% solution to get 8.333333333 liters of 12% solution.

.15 * 3.333333333 = .5

.10 * 5 = .5

.5 + .5 = 1

5 + 3.333333333 = 8.333333333

1 divided by 8.333333333 = .12 which is equal to 12%.

4 0
2 years ago
Find the sum<br> 3+5+7+9…., n=14
natka813 [3]
24! If that is not correct please let me know
4 0
2 years ago
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