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tekilochka [14]
2 years ago
14

Complete the factoring. 25x^4 = 5x^2(? )

Mathematics
1 answer:
VLD [36.1K]2 years ago
6 0

Answer:

5x^2(5x^2 - 1) = 0

Step-by-step explanation:

25x^4 = 5x^2

25x^4 - 5x^2 = 0

5x^2(5x^2 - 1) = 0

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A truck is traveling at 74.5 kilometers per hour away from you. The driver is blowing the horn which has a frequency of 415 Hz.
Sphinxa [80]
<span>fo = 335 Hz</span>let fo = frequency heard 
<span>f = actual frequency </span>
<span>v= speed of sound </span>
<span>vs = speed of source </span>

<span>For the first one, </span>
<span>fo = fv/(v - vs) </span>
<span>74.5 km/h = 20.69 m/s </span>
<span>vs = -20.69m/s since it is moving away from you </span>

<span>fo = (415Hz)(346m/s)/(346m/s - (-20.69m/s)) </span>
<span>fo = 392 Hz </span>

<span>For the second one, </span>
<span>fo = fv/(v - vs) </span>
<span>82.8 km/h = 23 m/s </span>
<span>vs = 23m/s </span>

<span>fo = (312Hz)(331m/s)/(331m/s - (23m/s)) 
</span>
5 0
3 years ago
Read 2 more answers
How do I write 400% as a decimal and as a mixed number or fraction in simplest form?
Mashutka [201]
400% 

= 400/100

= 4

As a decimal = 4.00

As a fraction = 4/1
7 0
4 years ago
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A game decreased in price by 1/5. After the reduction it was priced at £48. What was the original price of the game?
Agata [3.3K]

Answer:

1/5 is equal to 20% so you multiply 48 by .20 and you get 9.6 and your take 9.6 and add it to 48. your answer will be 57.6

3 0
4 years ago
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The mean height of a certain kind of plant is 171 centimeters. Suppose we want to carry out a hypothesis test to see if the mean
Doss [256]

Answer:

Null Hypothesis: H_0:\mu=171

Alternative Hypothesis: H_1:\mu\neq 171

Step-by-step explanation:

It is given that the mean height of a certain kind of plant is 171 centimeters.

Null Hypothesis: A hypotheses of no statistical significant difference is known as null hypothesis. The null hypotheses for this test is

H_0:\mu=171

Alternative Hypothesis: If a hypothesis is used in hypothesis testing that is contrary to the null hypothesis is known as alternative hypotheses. The alternative hypotheses for this test is

H_1:\mu\neq 171

4 0
3 years ago
What is the midpoint of the segment shown below?
Gennadij [26K]
(2,5) is the correct answer
8 0
3 years ago
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