Answer:
for 4 the slope is -3/2
x intercept is 1
for 5 the line described, the y intercept would be -4 and from there the slope would just go up at a slope of 5/2
5/2 as a slope means it will go up 5 units for every 2 units forward.
Step-by-step explanation:
Answer: The car will skid 200 miles
Step-by-step explanation:
The formula S= 7/2√2D
can be used to approximate the speed S, in miles per hour, of a car that has left skid marks of length D, in feet. To determine how far a car will skid at 70 mph, we will substitute 70 mph for S in the formula. It becomes
70 = 7/2√2D
We will take squares of both sides. This is to simplify the square root on the right had side of the equation. It becomes
70^2 = 7^2/2^2(√2D)^2
4900 = 49/4 × 2D
4900 = 49D/2
Cross multiplying,
49D = 2 × 4900 = 9800
D = 9800/49 = 200
Answer: 6.882
All you have to do is divide
Answer:
42.9
Step-by-step explanation:
The range is the difference between the highest and lowest numbers
71.8-28.9=42.9
Answer:
7y-4x.
Step-by-step explanation:
I think that the last 2 shouldn't be there and the third option should be 7y-4x or all the options are incorrect.
-3(2x- y) + 2y + 2(x+y)
= -6x+3y + 2y+2x+2y
= -6x+2x+3y+2y+2y
= -4x+7y.