MATHEMATICS
MIDDLE SCHOOL

A. -25/36

B. -9/16

C. -45/80

D. -1/36

Answer: A. -25/36

- 5/8 ÷ 9/10 = - 5/8 x 10/9 = - 5/4 x 5/9 = -25/36

- 5/8 ÷ 9/10 = - 5/8 x 10/9 = - 5/4 x 5/9 = -25/36

MIDDLE SCHOOL

Which literal equations are equivalent to w = Fd? Choose all answers that are correct.

A. d=f*w

B.d=w/f

Please help me

C.f=w/d

D.f=d/w

The correct answer is b and c

MIDDLE SCHOOL

Describe one way to use a line plot.

For statistics like, how many people like the color green over red

A line plot is a graph that shows frequency of data along a numberline. It is best to use a line plot when comparing fewer than 25 numbers. It is a quick, simple way to organize data.

COLLEGE

Simplify sin(2x+7y)+sin(2x-7y)

Sin(a+b)=sin a * cos b + sin b cos a

sin(a-b)=sin a * cos b - sin b cos a

sin(a-b)=sin a * cos b - sin b cos a

MIDDLE SCHOOL

6x4=8xN

how do i solve this equation

Answer:

n = 3

Step-by-step explanation:

find multiples of the product of 24 that comes from 6*4

COLLEGE

Find the lcd of the given rational equation. 2x/x^-16+x-3/3x+12=1/x A (x^2-16)(3x+12)

B 2x(x-3)

Cx(x^2-16)(3x+12)

D3x(x+4)(x-4)

The denominators of the rational equation are all divisors of the expression given by ...

... D. 3x(x +4)(x -4)

That is your lowest common denominator.

_____

The answer C could also serve as a common denominator, but it has an extra factor of x+4 that isn't necessary. Hence it is not the lowest common denominator.

MIDDLE SCHOOL

Find the sum -6+3 explanation for this answer

Answer:

-3

Step-by-step explanation:

-3-3=-6

Answer:

-3

Step-by-step explanation:

ok so -6 +3

-6 is negative and when you add the 3 you move to the left closer to the 0

you end up with -3

MIDDLE SCHOOL

. If Owen buys a trampoline for $350.60, and is charged 7% sales tax, how much sales tax does he pay?

$24.54 I hope this is the right answer

MIDDLE SCHOOL

A number changed to 193 after it was rounded. To what place was the number rounded? Explain how you know.

The number must originally been like:

192.85 or 193.24 or 192.98

So for it to have changed to 193, the number must have been rounded to the nearest whole number or to zero decimal place.

192.85 or 193.24 or 192.98

So for it to have changed to 193, the number must have been rounded to the nearest whole number or to zero decimal place.

That number would have been roundede to 190 because it was below 5

HIGH SCHOOL

Solve each quadratic equation. Show your work.

14. (2x – 1)(x + 7) = 0

You need to set each factor to zero

2x-1=0

add 1 to both sides

2x=1

divide both sides by 2

x= 1/2

x+7=0

subtract 7 from both sides

x= -7

solution set is x= 1/2 and -7

hope this helps

2x-1=0

add 1 to both sides

2x=1

divide both sides by 2

x= 1/2

x+7=0

subtract 7 from both sides

x= -7

solution set is x= 1/2 and -7

hope this helps