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ladessa [460]
3 years ago
9

15 is 25 % of what number?

Mathematics
1 answer:
Murrr4er [49]3 years ago
4 0

Answer:

60

Step-by-step explanation:

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Find the students error in solving the following inequality
Naya [18.7K]

His error was that he did not flip the inequality sign.

31<5x+6

25<-5x

-5>x

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3 years ago
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Solve by factoring x^2 + 8x =9
Helen [10]

Answer:

x=-9,\:x=1

Step-by-step explanation:

x^2+8x=9\\x^2+8x-9=0\\(x+9)(x-1)=0\\x=-9,\:x=1

6 0
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Given a polynomial function f(x), describe the effects on the y-intercept, regions where the graph is increasing and decreasing,
erma4kov [3.2K]
<span>The y-intercept of  is  .
Of course, it is 3 less than  , the y-intercept of  .
Subtracting 3 does not change either the regions where the graph is increasing and decreasing, or the end behavior. It just translates the graph 3 units down.
It does not matter is the function is odd or even.

 is the mirror image of  stretched along the y-direction.
The y-intercept, the value of  for  , is</span><span>which is  times the y-intercept of  .</span><span>Because of the negative factor/mirror-like graph, the intervals where  increases are the intervals where  decreases, and vice versa.
The end behavior is similarly reversed.
If  then  .
If  then  .
If  then  .
The same goes for the other end, as  tends to  .
All of the above applies equally to any function, polynomial or not, odd, even, or neither odd not even.
Of course, if polynomial functions are understood to have a non-zero degree,  never happens for a polynomial function.</span><span> </span>
4 0
3 years ago
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what are the solutions of the equation x4 95x2 – 500 = 0? use factoring to solve. and x = ±10 and x = ±10i and x = ±10i and x =
Andreas93 [3]

Doing factorization, we know that the factors of the given equation are ±√5 and ±10i.

<h3>What is Factorization?</h3>

In mathematics, factorization or factoring consists of writing a number or any mathematical item as a product of several factors, typically small or easier objects of the same.

For example, 3 × 5 is a factorization of an integer 15 and is a factorization of an equation x² – 4.

So, we have the equation:

x⁴ + 95x² – 500 = 0

Factorizing the above equation:

x⁴ + 100x² - 5x² - 500 = 0

x²(x² + 100) - 5(x² + 100) = 0

(x² - 5)(x² + 100) = 0

Solving further:

x² = 5

x² = -100

x = ±√5

x = √-100

Factors: ±√5 and ±10i

Therefore, doing factorization, we know that the factors of the given equation are ±√5 and ±10i.

Know more about Factorization here:

brainly.com/question/25829061

#SPJ4

Complete question:
What are the solutions of the equation x4 + 95x2 – 500 = 0? Use factoring to solve.

x=+- sqrt 5 and x = ±10

x=+- sqrt i5 and x = ±10i

x=+- sqrt 5 and x = ±10i

x=+- sqrt i5 and x = ±10

7 0
1 year ago
Ali used the expressed 8+25×2-45 to find how many CDs he has. how many CDs dose he have
MatroZZZ [7]

Ali has 13 CD's

Here's how I got my answer:

Step 1: Simplify 25 * 2 to 50. Which leaves us with 8 + 50 - 45

Step 2: Simplify 50 - 45 to 5. Which leaves us with 8 + 5.

Step 3: Simplify 8 + 5, to get your answer, 13.

7 0
3 years ago
Read 2 more answers
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