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Varvara68 [4.7K]
3 years ago
15

Is 2 a solution of 4x +12=4?

Mathematics
2 answers:
grin007 [14]3 years ago
8 0

Answer:

Step-by-step explanation:

mojhsa [17]3 years ago
5 0

Answer:

no

Step-by-step explanation:

4x +12 = 4

4(2) +12 =/= 4

8 +12 =/= 4

8 +12 = 20

(sorry if it doesn't make sense,I tried)

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lozanna [386]

Answer:

If a certain cone with a height of 9 inches has volume V = 3πx2 + 42πx + 147π, what is the cone’s radius r in terms of x?

Step-by-step explanation:

V = 3πx2 + 42πx + 147π

V=3π(x2 + 14x +49)

9.42(x2 + 14x +49)

9.42(x2 + 14x +14)  -14 + 49= 0

9.42(x + 7)^2 + 35= 0

9.42(9.42(x + 7)^2 = - 35)9.42

(x + 7)^2 = - 35/9.42)

√(x + 7)^2=√- 35/9.42

x + 7 = - 1.927

x= - 1.927 - 7

x= - 8.927

V = 3π(- 8.927)^2 + 42π(- 8.927) + 147π

V=750.69 - 1177.29 + 461.58

<u>V=34.98</u>

h= 9 inches

V = 13πr2h

34.98 = 13(3.14) (r^2) (h)

34.98 = 40.82 (r^2) 9

34.98 = 367.38 r^2

34.98/ 367.38 = 367.38 r^2/ 367.38

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3 0
3 years ago
Two lines are parallel to each other if they have the same slope. True or false?
wariber [46]

Answer:

true

Step-by-step explanation:

8 0
3 years ago
The difference between the value of the sample statistic and the value of the corresponding population parameter is called the _
mel-nik [20]

Answer: c. sampling error

Step-by-step explanation:

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Since, the sample is a subset of population , so there are chances for unavoidable variation in sample mean from the population mean that varies from sample to sample .

This variation is known as sampling error.

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Hence,the correct answer is c. sampling error .

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3 years ago
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tatuchka [14]

The total purchase price including sales tax will be $1449.6136

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Festus bought a computer at $736.34, Apple iPad at $249.99 and a printer at $381.23

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Answer:

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