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Alex17521 [72]
3 years ago
5

A runner ran 25 miles last week and 15 miles this week. What is the percent of change

Mathematics
2 answers:
Ede4ka [16]3 years ago
8 0

Answer:

40%

Step-by-step explanation:

The change in percent is the difference of the two distances ran divided by the last week’s distance and the result multiplied by 100%

That’s

25 - 15 / 25 x 100%

10/25 x 100%

0.4 x 100%

40%

The percentage change 40%

nikdorinn [45]3 years ago
4 0

Answer:

21.25 or 28.75

Step-by-step explanation:

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Answer:

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Answer:

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Step-by-step explanation:


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Answer:

x=4

Step-by-step explanation:

First you want to add 8.8 to 7.2 and get 16 because you want to get x alone

Next divide divide 4x on both sides so 4x/4x cross out and left with just x. 16/4 =4

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Hope this helps!


6 0
3 years ago
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Write an equation for the cubic polynomial function whose graph has zeroes at 2, 3, and 5.
TiliK225 [7]

we know that

For a polynomial, if x=a is a zero of the function, then (x−a) is a factor of the function. The term multiplicity, refers to the number of times that its associated factor appears in the polynomial.

So

In this problem

If the cubic polynomial function has zeroes at 2, 3, and 5

then

the factors are

(x-2)\\ (x-3)\\ (x-5)

Part a) Can any of the roots have multiplicity?

The answer is No

If a cubic polynomial function has three different zeroes

then

the multiplicity of each factor is one

For instance, the cubic polynomial function has the zeroes

x=2\\ x=3\\ x=5

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Part b) How can you find a function that has these roots?

To find the cubic polynomial function multiply the factors and equate to zero

so

(x-2)*(x-3)*(x-5)=0\\ (x^{2} -3x-2x+6)*(x-5)=0\\ (x^{2} -5x+6)*(x-5)=0\\ x^{3} -5x^{2} -5x^{2} +25x+6x-30=0\\ x^{3}-10x^{2} +31x-30=0

therefore

the answer Part b) is

the cubic polynomial function is equal to

x^{3}-10x^{2} +31x-30=0

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3 years ago
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How many interior angles in this polygon
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I believe it has 8 angles, each are 135 degrees
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