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Hatshy [7]
3 years ago
11

Highway patrol officers measure the speed of automobiles on a highway using radar equipment. The random variable in this experim

ent is speed, measured in miles per hour. This random variable is a _____. a. discrete random variable b. continuous random variable c. complex random variable d. None of the answers is correct.
Mathematics
1 answer:
Nastasia [14]3 years ago
8 0

Answer:

b. continuous random variable

Step-by-step explanation:

Speed is a common continuous variable and the value is always random.

It is continuous because there is always another speed value between two speed values. For example, a car travelling at the rate of 50 mils per hour will either increase or decrease its speed at a continuous rate. No speed can drop suddenly form 50mph to 20mph.

It is random because although there might be speed limit, the speed recorded by the Highway patrol officer willl always be random in value.

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Answer: True

Step-by-step explanation:

AB is congruent to RS

BC is congruent to ST

CD is congruent to TV

So DC would be congruent to VT

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3 years ago
Can someone help me solve this?
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HELPPPP PLEASE HELP ME WITH BASIC MATH I REALLY APPRECIATE IT ((WILL MARK AS BRAINLIEST))​
Yakvenalex [24]

Answer:

3) 522

4) 468

Step-by-step explanation:

hello!

3) in the question, it says the cross section is a square, and the area of PQRS is 81.

for the square, we know that the length and height have to be the same, so if the area is 81, then we know the sides are both 9 because 9*9 is 81 and they're the same numbers multiplied. (same height and length)

with the information that all 4 sides of the square is 9 and the other side is labeled 10, we can figure out the rest.

both squares : 81+81=162

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both 10 by 9 sides (top and bottom): 90+90=180

total surface area=162+180+180=522

4) for this problem, we can see that the triangle is a right triangle.

to solve the area of the triangle, we can do (9*12)/2=108/2=54.

there are two sides with triangles, so we double 54 (54*2=108)

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10 by 12 side: 120

now for the last slide, theres no information on the length. the formula for the diagonal is

a^2+b^2=c^2

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3 years ago
10ft*10ft of a circle What is the area, in ft2
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Step-by-step explanation:

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3 years ago
6. Find an exact value. (1 point)
vladimir2022 [97]
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sin(45+30)=sin(45)cos(30)+cos(45)sin(30)=(6^0.5+2^0.5)/4
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<span>7. Find an exact value. 
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10. Rewrite with only sin x and cos x.

sin 2x - cos 2x

 

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