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Ghella [55]
4 years ago
7

a number is increased by 25%, and the resulting number is then decreased by 20%. The final number is what percent of the origina

l number?
Mathematics
1 answer:
Neporo4naja [7]4 years ago
8 0
The final number is 100% of, or the same as the original number 

Ex: original number = 1
      1(.25) = .25     1 + .25 = 1.25
     1.25(.20) = .25      1.25 - .25 = 1

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Sloan [31]
The answer is C

The reason: There are two width and two length sides. So, therefore, if you want the fencing to equal 40 feet around the perimeter, 8 · 2 + L · 2 has to = 40.
You would factor 2 out, and you get 2(8 + L) = 40.
7 0
3 years ago
The zeros of a function P(x)=x2-2x-24
Anna [14]

Answer:

x = -4 and x = 6

Step-by-step explanation:

Factor using AC method.

1 × -24 = -24

Factors of -24 that add up to -2 are +4 and -6.

P(x) = (x + 4) (x − 6)

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8 0
3 years ago
Is the relationship shown by the data linear? If so, model the data with an equation.
zhenek [66]

Answer:

Therefore the equation of the line through ( -7 , 5 ) and ( -5 , 9) is

Linear Relationship i.e y-5=2(x+7)

Step-by-step explanation:

Given:

Let,

point A( x₁ , y₁) ≡ ( -7, 5 )  

point B( x₂ , y₂) ≡ (-5, 9)  

To Find:

Equation of Line AB =?

Solution:

Equation of a line passing through Two points A( x₁ , y₁) and B( x₂ , y₂)is given by the formula

(y - y_{1} )=(\frac{y_{2}-y_{1} }{x_{2}-x_{1} })\times(x-x_{1}) \\

Substituting the given values in a above equation we get

(y-(5))=(\frac{9-(5)}{-5--7})\times (x--7)\\ \\(y-5)=\frac{4}{2}(x+7)\\\\y-5=2(x+7)...............\textrm{which is the required equation of the line AB}

Therefore the equation of the line through ( -7 , 5 ) and ( -5 , 9 ) is

Linear Relationship i.e y-5=2(x+7)

4 0
3 years ago
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Natali [406]
First find out what 10 percent of 50 is
Do 50/10
I got 5
Then do 5 times 9 to get your answer
You should get 45. Thanks (:
8 0
3 years ago
Read 2 more answers
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KengaRu [80]

Answer:

{2b}^{2}  + 32b + 128

Factor and get

x =  - 8

8 0
3 years ago
Read 2 more answers
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