Answer: y=3x-7 is the correct answer
Step-by-step explanation:
The square root of 86 is 9.2...... Hence, it lies between 9 and 10.
Answer:
1=0 2
Step-by-step explanation:
You need to make a proportion.
45 X
------ -----
100 480
45 x 408 is 21600 ÷ 100 is 216.
so ur answer is 216
hope that helps
Step-by-step explanation:
Substitute the y in the 1st equation with the 2nd equation.
7x + 10(2x + 9) = 36
7x + 20x + 90 = 36
27x + 90 = 36
3x + 10 = 4
3x = -6
x = -2
So now we can find y.
y = 2x + 9 = 2(-2) + 9 = (-4) + 9 = 5.
So x = -2, y = 5.
