Answer:
Step-by-step explanation:
Both 115 and 145 mph are above the mean. Draw a normal curve and mark these speeds. 115 mph is 1 standard deviation above the mean; 130 would be 2 standard deviations above the mean; and 145 would be 3 s. d. above it.
We need to find the area under the standard normal curve between 115 and 145. This is equivalent to the area under the standard normal curve between z = 1 and z = 3.
I used my TI-83 Plus calculator's DISTR function "normalcdf(" to calculate this area: normalcdf(1, 3) = 0.1573.
The area between z = 1 and z = 3 is 0.1573. In other words, the percentage of serves that were between 115 and 145 mph was 15.73%.
can you get a better picture of it so I can possibly find the answer.
Answer:
Set 1 Angle A is 90
Set 1 Angle B is 45
Set 2 Angle B is 15
Set 2 Angle C is 90
2)
Set 1 Angles A and C are both 62
Set 2 Angles B and D are both 120
Step-by-step explanation:
Hopefully, you remember that the hypotenuse in a right triangle<span> is the longest side, which is also directly across from the </span>90<span> degree angle. It turns out that in a </span>30-60-90 triangle<span>, you can find the measure of any of the three sides, simply by knowing the measure of at least one side in the </span>triangle<span>.</span>
Answer:
17c
Step-by-step explanation:
17 × c = 17c
