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Firdavs [7]
3 years ago
14

Someone help me please

Mathematics
1 answer:
bezimeni [28]3 years ago
4 0

Answer:

-7 / (x^2 +3x-10)

Step-by-step explanation:

1/ (x+5) - 1/(x-2)

we need to get a common denominator

1/ (x+5)  * (x-2)/ (x-2)   - 1/(x-2) * (x+5)/(x+5)

(x-2) / (x+5)(x-2)   - (x+5)/  (x+5)(x-2)

Combine the numerator

(x-2 -x-5)/ (x+5)(x-2)

-7/(x+5)(x-2)

FOIL the denominator

-7 /( x^2 -2x +5x -10)

Combine terms in the denominator

-7 / (x^2 +3x-10)

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Two years ago, Sally had 5,000 dogs in her dog shelter. Now she has 24,575 dogs. What is the
vodomira [7]

Two years ago, Sally had 5,000 dogs in her dog shelter. Now she has 24,575 dogs. The rate of change is 391.5 % increase

<em><u>Solution:</u></em>

Given that Two years ago, Sally had 5,000 dogs in her dog shelter

Now she has 24,575 dogs

To find: rate of change

A rate of change is a rate that describes how one quantity changes in relation to another quantity

<h3><u>Steps to follow:</u></h3>
  • First: work out the difference (increase) between the two numbers you are comparing.
  • Increase = New Number - Original Number.
  • Then: divide the increase by the original number and multiply the answer by 100.
  • % change = Increase ÷ Original Number x 100

\text {rate of change }=\frac{\text { new value }-\text {original value}}{\text {original value}} \times 100

\begin{array}{l}{\text { rate of change }=\frac{24,575-5000}{5000} \times 100} \\\\ {\text { rate of change }=\frac{19575}{5000} \times 100=391.5}\end{array}

Thus the rate of change is 391.5 % increase

5 0
3 years ago
M+(7-9)/n when m =2.5 and n =5 i need the answer fast plz<br> ✨
Kobotan [32]

Answer:0.1

Step-by-step explanation:

Substract ,add & divide

3 0
3 years ago
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A parachutist's speed during a free fall reaches 90 miles per hour. What is this speed in feet per second? At this speed, how ma
Nezavi [6.7K]

Answer:

A) 132 feet per second , B) 1320 feet

3 0
4 years ago
Which of the following equations has exactly one solution?
shusha [124]

Answer:

A

Step-by-step explanation:

5a+4=9a+3-4a

5a-9a+4a=3-4

a=-1

6 0
2 years ago
Please help due tomorrow
grigory [225]

26 is 40 percent of x

Make "is" an = sign and "of" a × sign


26 = 40% × x

rewritten: convert 40% into a decimal by moving the decimal twice to the left

26 = .40x


Divide both sides by 0.40.

x = 65


D) 65

5 0
4 years ago
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