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3 years ago

Need help . This is multiply and dividing rational expressions

Mathematics

1 answer:

Lemur [1.5K]3 years ago

3 0

22x−11 over x to the second power - x - 30.

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(5n−5)(2+2n) standard form

mash [69]

Answer:

10n -10

Step-by-step explanation:

5n * 2n = 10n

-5 * 2 = -10

-10 + 10n = 10n - 10

3 0

3 years ago

Read 2 more answers

Jerome is going to draw a marble from the bag shown below, replace it, and then draw another marble. What is the probability tha

alexira [117]

Marbles in a bag: 3 green, 4 yellow, 5 blue, 8 pink.

Event A - get a green or yellow marble
Event B - get a pink marble

Events A and B are independent because we draw a marble from a bag with 20 marbles in both cases.
$P(A)= \frac{3+4}{3+4+5+8}= \frac{7}{20} 
\\P(B)= \frac{8}{3+4+5+8}= \frac{8}{20} = \frac{2}{5}$

Probability of combined events is
$P(A) \times P(B)=\frac{7}{20} \times \frac{2}{5} =\frac{7}{50}$

7 0

3 years ago

Read 2 more answers

for every 300 kids in high school 2/3 of them take a language. What is the value of a number of students who dont take a languag

Anna [14]

All you have to do is divide 300 hundred by 3 and you get 100 students that don’t take a language So 200 students take language and 100 students don’t take language

3 0

2 years ago

A container in the shape of a pyramid has a rectangular base with dimensions of 5 inches by 15 inches. The height of the rectang

Rama09 [41]

Answer:

150

Step-by-step explanation:

1) the full volume of the given pyramide may be calculated according to the formula:

V=1/3 *Area_of_base*height;

V=1/3 *(5*15)*12=300 (in³).

2) the half of the calculated volume is:

300/2=150 (in³)

8 0

3 years ago

Read 2 more answers

What is the slope of 2x+3y=15

Fynjy0 [20]

Note that the slope-intercept form is: y = mx + b

First, set the equation as such

2x (-2x) + 3y = (- 2x) + 15

3y = -2x + 15

Isolate the y. Divide 3 from both sides

(3y)/3 = (-2x + 15)/3

y = (-2/3)x + 5

-2/3 is your slope

hope this helps

5 0

2 years ago