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3 years ago

Which of the following is not a

Mathematics

1 answer:

mamaluj [8]3 years ago

6 0

B 7/8 shows division, not multiplication

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Factor completely 2x2 + 2x − 24. 2(x − 3)(x + 4) (2x − 6)(x + 4) (2x − 3)(x + 8) 2(x − 4)(x + 6)

Veseljchak [2.6K]

2x² + 2x − 24

GCF = 2

2(2x²/2 + 2x/2 - 24/2)

2(x - 3)(x + 4)

7 0

2 years ago

Read 2 more answers

If r is an odd integer and m=8r then m/2 will always be

kogti [31]

Answer:

b. even

Step-by-step explanation:

m is a multiple of 8, so it is also a multiple of 4. When a multiple of 4 is divided by 2, the result is a multiple of 2 (even).

3 0

2 years ago

I dont understand this

Westkost [7]

Answer:

$\dfrac{1}{2x(x-1)}$

Step-by-step explanation:

Given

$\dfrac{x^2+2x+1}{x^2-1}\div (2x^2+2x)$

Consider the numerator:

$x^2+2x+1=(x+1)^2$

Consider the denominator:

$x^2-1=(x-1)(x+1)$

Hence, the fraction becomes

$\dfrac{(x+1)^2}{(x-1)(x+1)}=\dfrac{x+1}{x-1}$

Consider the expression in brackets:

$2x^2+2x=2x(x+1)$

Divide:

$\dfrac{x^2+2x+1}{x^2-1}\div (2x^2+2x)=\dfrac{x+1}{x-1}\div 2x(x+1)=\dfrac{x+1}{x-1}\times \dfrac{1}{2x(x+1)}=\dfrac{1}{2x(x-1)}$

4 0

3 years ago

a car salesman's total earnings , e , is a base salary pus a commission. the salesman has a base salary of $40,000 and receives

Orlov [11]

40,000+ 200C= e

salary is a flat yearly pay, you don't get paid hourly.

4 0

2 years ago

A 4 by 5 inch photo is enlarged by multiplying every

dem82 [27]

Answer:

Perimeter ratio = 2:1

Area ratio = 4:1

Step-by-step explanation:

Perimeter

Perimeter of the smaller photo = $2l+2w$

$=2(5)+2(4)$

$=18$ inches

Perimeter of larger photo = $2l+2w$

$=2(10)+2(8)$

$=36$ inches

Ratio:

Perimeter of larger photo : perimeter of smaller photo = $36:18$

$=2:1$

Area

Area of smaller photo = $lw$

$=5\times4$

$=20$ inches²

Area of larger photo = $lw$

$= 10\times8$

$=80$ inches ²

Ratio

Area of larger photo : area of smaller photo = $80:20$

$=4:1$

∴The ratio of the perimeters = 2:1, and the ratio of the areas = 4:1

Hope this helps :)

6 0

2 years ago