Answer:
I think the answer is 50 .
Step-by-step explanation:
this is what I did
Pythagoras therome: a^2 +b^2 = c^2
So I did 30^2 +40^2 = 2500
square root of 2500 is 50
So I think the option is 50
Answer:
Step-by-step explanation:
y = -3x - 2
5x + 2y = 15
5x + 2(-3x -2) = 15
5x -6x - 4 = 15
-x - 4 = 15
-x = 19
x = -19
y = -3(-19) - 2
y = 57 - 2
y = 55
(-19, 55)
solution is b
Answer:
M=2
Step-by-step explanation:
m=2 Make sure to move the terms, then collect the like terms, then subtract, then divide both sides by 6
<u>Answer:</u>
Option(c) = He dig out 7.85 cubic meters
<u>Explanation:</u>
Dirt dug out of ground will be given by the volume of the cylindrical hole dug by Dan in his backyard.
We are given that the hole is 2 meters across which means the diameter of cylinder , d= 2 m
then radius of cylindrical hole , r = 1 m and
depth of hole = 2.5 m which = height of cylinder = h
Volume of cylinder hole is given by
V= π x r x r x h
= 3.14 x 1 x 1 x 2.5
= 7.85 cubic meters which is the required answer.