Answer:
z+9(8−x)+8(z+8)=
z+72-9x+8z+64=
9z-9x+136
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(3−10)^2−(5−12)^2 parenthesis first
(-7)²-(-7)²=
49-(49)=49-49=0
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2^2⋅4^3 exponent first
2*2*4*4*4
4*64=256
Answer:
THERES NO PIC I CANT SEE
Step-by-step explanation:
Answer:
The largest angle is A + 5 = 117.5 + 5 = 122.5 degree.
Step-by-step explanation:
The sum of the interior angles of a regular hexagon is 720 degree.
Let the one angle is A.
So,
A + A + 1 + A + 2 + A + 3 + A + 4 + A + 5 = 720
6 A + 15 = 720
6 A = 705
A = 117.5
The largest angle is A + 5 = 117.5 + 5 = 122.5 degree.
Answer:
There are 49 white marbles.
Step-by-step explanation:
w + g = 62 (w = white and g = green marbles).
w = 4g - 3
w - 4g = -3 Subtract this equation from the first equation:
g - (-4g) = 62 - (-3)
5g = 65
g = 65/5 = 13.
So w = 62 - 13 = 49.
Answer:
7 mph
Step-by-step explanation:
If b is the rate of the boat, and s is the rate of the stream, then:
b − s = 4
b + s = 10
Solve the system of equations with substitution or elimination. Using elimination, add the equations together:
2b = 14
b = 7
The boat's rate is 7 mph.