Answer:
4
Step-by-step explanation:
Area of a triangle = bh/2
B = 2h
16 = 2h × 2/2
h×2 = 16
2h = 16
* put a square root on both sides then u will get the answer which is
Height of the triangle = 4
Answer:
A. 10. B. -12. C. 3.6
Step-by-step explanation:
You will do this:
a) If x=5 (what about 2x)
=2x times 5 divide by x .That makes the answer 10
b) If y=-3(what about 4y)
=4y times -3 divide by y .That makes the answer -12.
c) If z=1.2(what about 3z)
=3z times 1.2divide by z. That makes the answer 3.6.
If the length of a side is x, then the surface area of a face of the cube is x squared. there are six sides in a cube so 6(x^2) would be the surface area.
6(x^2)=150
(x^2)=25
x=5
Answer:
What is this?
Step-by-step explanation:
2.1x + 4.2y = 14.7 is the same as x + 2y = 7 (divide both sides by 2.1)
-5.7x-1.9y=-11.4 is the same as 3x + y = 6 (divide both sides by -1.9)
Rearrange the first equation to get x = 7 - 2y and substitute into the second equation, 3(7 - 2y) + y = 6, 21 - 6y + y = 6, 5y = 15, y = 3
Substitute y = 3 into the first equation x + 2(3) = 7, x = 1
x = 1 and y = 3