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katrin [286]
3 years ago
5

Can someone help me pls if u do u will be the best and on the first one and the second one

Mathematics
1 answer:
likoan [24]3 years ago
5 0

Answer:

#1

158 students voted for toby

Gail won

#2

$350 dollars collected

$175 dollar profit


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3 (b-8)=18 what does b equal
tia_tia [17]
3 ( 14-8) =18 

B= 14 


I subtracted 14-8 and i got 6, then I multiplied 3 times 6 and got 18. Therefore, 14 is a valid answer. 
7 0
3 years ago
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What is the answer ?​
Anika [276]

Answer: What is the question

Step-by-step explanation:

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3 years ago
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If x=1+√2, evaluate x³+1/x³.
aleksandr82 [10.1K]

Answer:

10√2

Step-by-step explanation:

If x=1+√2, evaluate x³+1/x³

--------

  • x³+1/x³= (x+1/x)(x²-x*1/x+1/x²)=(x+1/x)(x²+1/x²+2-3)= (x+1/x)((x+1/x)²-3)
  • x+1/x= 1+√2 + 1/(1+√2)= 1+√2+(1-√2)/(1-√2)(1+√2)= 1+√2 - (1-√2)= 2√2
  • x³+1/x³= 2√2((2√2)²-3)= 2√2(8-3)= 10√2
3 0
3 years ago
Last one pls help for brainlist
Sladkaya [172]

Answer:

1/10

Step-by-step explanation:

first you find the common denominator.

multiply 1/2 by 5 and 2/5 by 2

now you have 5/10-4/10

now its easy and the answer is 1/10

6 0
3 years ago
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A toy rocket is a composite of a cylindrical body with a cone for a nose. The base of the cylinder and cone are the same size. C
inysia [295]

The volume of the entire rocket given the volumes of the cylindrical body and the cone nose is 117.23 in³.

<h3>What is the volume of the entire rocket?</h3>

The volume of the entire rocket is the sum of the volume of the cylinder and the volume of the cone.

Volume of the cylinder = πr²h

Where:

  • π = 3.14
  • r = radius 2
  • h= height = 12 - 4 = 8 inches

3.14 x 2² x 8 = 100.48 in³

Volume of the cone = 1/3 πr²h

1/3 x 2² x 3.14 x 4 = 16.75 in³

Volume of the rocket = 100.48 + 16.75 = 117.23 in³

To learn more about the volume of a cone, please check: brainly.com/question/13705125

#SPJ1

6 0
2 years ago
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