Answer:
x=-14 and y = 9
Step-by-step explanation:
hello
4x + 8y = 8 <=> divide by 4 both parts
(1) x + 2y = 4
(2) x + 3y = 13
(2) - (1) gives
x + 3y -x - 2y = 13 - 4 = 9
<=> y = 9
we replace in (1) x + 2*9 = 4
<=> x = 4 - 18 = -14
so x = -14
hope this helps
E(t) is the elevation Maria is at at t minutes.
The expression to calculate the elevation is 1200 + 40t.
E(t) = 1200 + 40t
E(15) means the elevation Maria is at at time 15 minutes.
E(15) = 1200 + 40(15)
E(15) = 1200 + 600
E(15) = 1800
E(15) = 1800 means that Maria is at an elevation of 1800 ft after 15 minutes.
I believe the GCF is 5y^6.
The volume of the box:
V = a³
That means : a = ∛ V
The surface area of the box:
A = 6 a² ( all 6 sides )
Answer:
A = 6 ∛ V²![A = 6* \sqrt[3]{V^{2} }](https://tex.z-dn.net/?f=A%20%3D%20%206%2A%20%5Csqrt%5B3%5D%7BV%5E%7B2%7D%20%7D%20)
The easiest way to solve this is to create an equation. Let's let the variable n represent the unknown number.
1/3(4n - 4) = -6
First, we should divide both sides by 1/3, to cancel it out on the left side of the equation.
4n - 4 = -18
Next, we should add 4 to both sides to cancel out the -4 on the left side.
4n = -14
Finally, we should divide both sides by 4, to get the variable n alone on the left side.
n = -3.5
Therefore, the number is -3.5.
You know that this is the answer because if you plug it back into the orginal equation it works.
:)
