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sergij07 [2.7K]
4 years ago
7

Factor the expression. 40z – 20 a) 2z - 1 b) 2(20z-10) c) 20(2z-1) d) 20(2Z-20)

Mathematics
1 answer:
Ostrovityanka [42]4 years ago
3 0
C. 

20 is the greatest common factor. Then divide. 
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Find the volume of a cylinder with a radius of 6 cm and height 15 cm?
rewona [7]

The volume of the cylinder is defined (as usual) as the base area times the height. The base is a circle, so the base area is \pi r^2

So, the volume is

h\pi r^2 = 15\cdot \pi \cdot 36 = 540\pi

5 0
3 years ago
Read 2 more answers
In the circle below, O is the center and mĞ= 150°. What is the measure of angle HIG?​
Crank

Answer:

15°

Step-by-step explanation:

∠GOI=150°

∠HOG=30°

∠HIG=30°/2=15°(Circle angle)

6 0
3 years ago
What is the measure of ABC?
Norma-Jean [14]

Answer:

C. 60

Step-by-step explanation:

You can take away 120 instantly because that angle is acute. This leaves you with A, B, and C. It's most certainly too big to be C. By this point you can look at it and draw a 90 degree angle in your mind and you can see that it looks about 2/3 of a 90 degree angle.

May I have brainliest please? :)

3 0
3 years ago
Doing research for insurance rates, it is found that those aged 30 to 49 drive an average of 38.7 miles per day with a standard
Alja [10]

Answer: 0.4302

Step-by-step explanation:

Given : Mean : \mu=\text{38.7 miles }

Standard deviation : \sigma=\text{6.7 miles }

Sample size : n=60

Also, these distances are normally distributed.

Then , the formula to calculate the z-score is given by :-

z=\dfrac{x-\mu}{\sigma}

For x=32.5

\\\\ z=\dfrac{32.5-38.7}{6.7}=-0.925373134\approx-0.93

For x=40.5

\\\\ z=\dfrac{40.5-38.7}{6.7}=0.268656\approx0.27

The p-value = P(-0.93

=P(0.27)-P(-0.93)=0.6064198- 0.1761855=0.4302343\approx0.4302

Hence, the required probability :-0.4302

3 0
3 years ago
A fire truck has a ladder that can extend to 120 ft in length. The ladder can be safely raised to the maximum angle of 75 with t
marta [7]

Answer:

the ladder is 60 feet and the angle is 75 degrees     guess and check         sin75=x/60    

0.9659258263=x/60

57.9555=x

57.96=x

so B

3 0
3 years ago
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