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3 years ago

7

The sum of five more than a certain number and 10 more than twice the number is equal to the product of 2 and the number increas

ed by eight. Find the number.

1 answer:

d1i1m1o1n [39]3 years ago

7 0

Answer:

No solution

Step-by-step explanation:

10+2x=2x+8

2x=2x-2

0≠-2

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boyakko [2]

See below for solution. Hope this is helpful

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3 years ago

When I square my number, I get the same answer as when I multiply my number by 10 and then add 144. My number is positive. What

exis [7]

Answer:

your number is 18

Step-by-step explanation:

x^2 = (x × 10 ) + 144

x^2 = 10x + 144

x^2 - 10x - 144 = 0

using quadratic method

your answer should be

(x- 18) ( x+8 )

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3 years ago

Abe,a plumber, charges $50 per hour plus $75 for making an in-home visit. The Plumbing Service charges $65 per hour but no set f

Rasek [7]

Steps:

let “x” be number of hrs
let “y” be total cost

Abe:

50x + 75 = y

Plumbing Service:

65x=y

Since both equations are equal to y, you can set them equal to each other.

65x = 50x + 75

isolate for x:

65x - 50x = 75
15x = 75
x = 5

therefore it will take 5 hours for each to cost the same. you should call Abe for any task more than 5 hours because it will be cheaper and you should call the Plumbing Service for any task less than 5 hours because it will be cheaper.

5 0

4 years ago

Pls answer!! giving brainliest if correct!!

guajiro [1.7K]

Answer:

78.5

Step-by-step explanation:

radius is half the diameter, so we know it is five. Then simply plug 5 into the circle area formula.

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3 years ago

Help me please!!!!!!!!!!!!!!

tia_tia [17]

Answer:

okay so you would make a line straight across the middle of the spherical shape. The line that goes all the way across is the diameter. If you were to cut that line in half that would be the radius.

Step-by-step explanation:

The first circle shown in the picture provided would be an example of diameter, and the second circle would be an example of the radius. You could just make up a value, for example say the diameter is 10, the radius would be 5.

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3 years ago