Answer:
length: 31
width: 12
Step-by-step explanation:
l=8+2w
p=2l+2w=88
(8+2w)+(8+2w)+w+w
16+6w=88
6w=72
w=12
l=8+2(12)
l=32
sorry if this was confusing
Let the angle of elevation be x, then
tan x = 1/12
x = arctan (1/12) = 4.8 degrees.
Answer:
The metal worker should use 10 kgs of 25% copper alloy and 40kgs of 70% copper alloy to make it
Step-by-step explanation:
a) The speed of car was 60 mph.
b) The speed of car was 45 mph.
Step-by-step explanation:
Given,
a = actual skid marks
p = test skid marks
Formula;

a) a = 144 feet, p = 36 feet
Putting in formula;

The speed of car was 60 mph.
b) a = 153 feet, p = 68 feet
Putting in formula;

The speed of car was 45 mph.
Keywords: substitution, speed
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