Answer:
A. 55°
Step-by-step explanation:
Complementary angles are angles that add up to give us 90°.
Since <A and <B are complementary angles, it implies that:
m<A + m<B = 90°
If m<A = 35°, therefore:
35° + m<B = 90°
Subtract 35° from each side
m<B = 90° - 35°
m<B = 55°
Answer: CI = (0, 8)
Step-by-step explanation: Confidence interval for difference between mean is given below as
Lower limit
= (x1 - x2) + margin of error
Upper limit
= (x1 - x2) - margin of error
where x1 - x2 = 8 and margin of error = 8
For lower limit,
= 8 - 8 = 0
For upper limit
= 8 + 8 = 16
Hence CI = (0, 8)
Answer:
Step-by-step explanation:
#3 slope is the change in y divided by the change in x
So -10-(-8)/13-15 = -2/-2=1
for #5 the slope is always the coefficient of x when written in slope intercept form so the slope is 3
#7 the gradient is infinite
Their distance differs by 15 miles for each hour of travel time. Thus, the travel time of interest is
.. (180 -144) miles/(15 miles/hour) = 2.4 hour
The red car's speed is 180 mi/(2.4 h) = 75 mi/h.
The blue car's speed is 144 mi/(2.4 h) = 60 mi/h.
