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marissa [1.9K]
3 years ago
11

Please help with this one. I will give brainliest!!

Mathematics
2 answers:
qaws [65]3 years ago
5 0

Answer: 78.54

Step-by-step explanation:

irga5000 [103]3 years ago
5 0

Answer:

31.4 cm²

Step-by-step explanation:

10*3.14=31.4²

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Four of a sample of 150 computers will be selected and tested. How many different ways are there to make this selection?
klio [65]
The formula C(n, r) calculates the total number of ways of picking r objects out of n.

The formula works as follows:

C(n, r)= \frac{n!}{r!(n-r)!}

where n! is 1*2*3*...*(n-1)*n

So, we calculate C(150, 4), which will give us the total number of ways we can make the selection of the computers.

C(150, 4)= \frac{150!}{4!(150-4)!}=\frac{150!}{4!146!}= \frac{150*149*148*147*146!}{4!*146!}= \frac{150*149*148*147}{4!}

= \frac{150*149*148*147}{4*3*2*1}= 20,260,275 many ways.

Answer: 20,260,275

5 0
4 years ago
Whats the least amount of wrapping paper ✨
Bas_tet [7]
To figure this out, we would need to find the volume of the present.

The formula for finding the volume of an object is LxWxH, so we would multiply 5x8x1.5 to get a volume of 60 inches.

So we would need at least 60 inches or wrapping paper.
I hope this helped! :-)
4 0
3 years ago
G(n)=4n+3 <br> h(n)=3n+1 <br> find (g-h)(9)
Marina CMI [18]
I believe the answer is :
9n + 18
8 0
3 years ago
The proof, with a missing reason, proves that the measure of angle ECB is 54°.
aniked [119]

Answer:

Midsegment of a Triangle Theorem

Step-by-step explanation:

In\: \triangle ADE\\m\angle A + m\angle D + m\angle AED = 180°\\\therefore 90°+36°+m\angle AED= 180°\\\therefore 126° +m\angle AED = 180°\\\therefore m\angle AED = 180°-126°\\\therefore m\angle AED = 54°\\

In\: \triangle ADE, D and E are mid points of sides AB and AC respectively.

Therefore, DE || BC

Hence, by Midsegment of a Triangle Theorem

m\angle ACB = m\angle AED =54°(corresponding\:\angle 's) \\\therefore m\angle ECB = m\angle AED =54°(\because A - E - C)

3 0
3 years ago
Jason considered two similar televisions at a local electronics store. the cheaper version was 12 inches by 24 inches. the more
Vaselesa [24]

The dimensions of expensive television is 32 inches through 64 inches.

This trouble may be solved if we understand the idea of fraction and a way to calculate the part of a fragment.

right here it is for the reason that the inexpensive tv is 12 inches by means of 24 inches.

Also it is given that the expensive television is \frac{8}{3} of the cheaper one.

Now taking the length into consideration the length of the television is

  =\frac{8}{3}*12

  = 32 inches

Now taking the width into consideration the width of the television is

 =\frac{8}{3}*24

 = 64 inches

So, the dimension of the expensive television is 32 inches by 64 inches.

To learn more about fractions visit the link:

brainly.com/question/10354322

#SPJ4

6 0
1 year ago
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