Answer:
(2, 4.5 )
Step-by-step explanation:
Given the 2 equations
6x + 4y = 30 → (1)
5x - 2y = 1 → (2)
Multiplying (2) by 2 and adding to (1) will eliminate y
10x - 4y = 2 → (3)
Add (1) and (3) term by term to eliminate y
16x + 0 = 32
16x = 32 ( divide both sides by 16 )
x = 2
Substitute x = 2 into either of the 2 equations and solve for y
Substituting into (1)
6(2) + 4y = 30
12 + 4y = 30 ( subtract 12 from both sides )
4y = 18 ( divide both sides by 4 )
y = 4.5
solution is (2, 4.5 )
Answer:
i believe 27.2 centimeters
6n + 9 = -3n <u>-21 -6</u>
<u>6n</u> + 9 = <u>-3n</u> -27
+3n +3n
9n <u>+9</u> = <u>-27</u>
-9 -9
<u>9n</u> = <u>-36</u>
<u>Divide by 9 on both sides</u>
n = -4
Answer: 87.5
Step-by-step explanation:
Triangle area = base * height / 2
25 * 7 = 175
175/ 2 = 87.5
24=K•9
So then the next step is to divide by 9 on both sides to cancel the 9 out so you get the K alone.
24 = K•9
— ——
9 = 9
That cancels out the 9 by the K so now it’s
24
— = K
9
Now divide 24%9 and it’s 2.6666 but you round it to the nearest tenth so your answer is (2.7 = K)