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4 years ago

(x−4) (x-4) is subtracted from 10x

Mathematics

1 answer:

Citrus2011 [14]4 years ago

4 0

Answer:

18x - x^2 - 16

Step-by-step explanation:

10x - ((x - 4) (x - 4))

10x - (x - 4)^2

10x - (x^2 - 2x · 4 + 4^2)

10x - x^2 + 2x · 4 - 4^2

10x - x^2 + 8x - 16

(10x + 8x) - x^2 - 16

18x - x^2 - 16

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Apply the distributive property to factor out the greatest common factors 9 +15

aleksley [76]

Answer:

3( 3+5)

Step-by-step explanation:

9 +15

Rewriting 9 as 3*3 and 15 * 3*5

3*3 + 3*5

Factor out 3

3( 3+5)

3 0

3 years ago

Complete the table below showing the cost and number of tickets

Anna11 [10]

Answer:

Step-by-step explanation:

The cost of 3 tickets is 6 dollars. divide 6 by 3 to get the cost of one ticket, which would be two dollars a ticket. with this in mind we'll complete the table

6 12 14 18 20

3 6 7 9 10

5 0

3 years ago

Derive a formula to find the perimeter of an isosceles triangle in which one of the equal

Scorpion4ik [409]

Given :

Length of one of the equal sides of an isosceles triangle = 3x+2

Then, length of the other equal side will also be = 3x+2

Length of the unequal side of this isosceles triangle = 14

Formula for finding the perimeter of an isosceles triangle :

$= \tt side + side + side$

A formula for finding the perimeter of this isosceles triangle :

$= \tt3x + 2 + 3x + 2 + 14$

Bringing all like terms together we get :

$=\tt 3x + 3x + 2 + 2 + 14$

$= \tt6x + 4 + 14$

$\color{plum}\tt = 6x + 18$

Thus, the formula = 6x+18

Therefore, a formula to find the perimeter of this isosceles triangle = <u>6x+18</u>

7 0

3 years ago

You have $59.95 in your wallet and want to buy some new CDs. If the CDs are $11.99 each, what number of CDs, x, can you buy? Wri

Effectus [21]

Answer:

You can buy 5 CD's

Step-by-step explanation:

59.95 ÷ 11.99 = 5

Equation:

$11.99x \leq59.95x \leq5$

8 0

3 years ago

For f(x) = 2x + 8, find x when f(x) = -7.

Allushta [10]

-7 = 2x + 8

Solve for x. First subtract 8 to both sides.

-7 - (8) = 2x + 8 - (8)

-15 = 2x

Divide by 2.

-15/(2) = -2x/(2)

x = -15/2 = -7.5

5 0

3 years ago