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Furkat [3]
3 years ago
5

Find f (2b^2) for (x)=x^2-4x

Mathematics
1 answer:
BlackZzzverrR [31]3 years ago
7 0

Answer:

A

Step-by-step explanation:

We are given the function:

f(x) = x^2 - 4x

And we want to find:

\displaystyle f(2b^2)

Substitute:

\displaystyle f(2b^2) =(2b^2)^2 -4(2b^2)

And evaluate:

\displaystyle \begin{aligned}  f(2b^2) &=(2b^2)^2 -4(2b^2) \\ &=(4b^4) +(-8b^2) \\ &= 4b^4 - 8b^2 \end{aligned}

In conclusion, our answer is A.

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22. Determine the number of month in 0.25 years
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Answer:

3 months

Step-by-step explanation:

there are 12 months in a year.

.25 is equal to a quarter of a year

12/4=3

4 0
2 years ago
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How can you write the improper fraction 263/10 as a decimal?
insens350 [35]

Answer:

263/10 as a decimal equals 26.3

Step-by-step explanation:

To write 263/10 as a decimal you have to divide numerator by the denominator of the fraction.

We divide now 263 by 10 what we write down as 263/10 and we get 26.3

hope this answer correct :)

4 0
2 years ago
If Darlene reads 5/8 of a 56 page book how many pages did she read?
Marina86 [1]
Darlene read 35 pages of the book.
5 0
3 years ago
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I will mark you as brainliest if you're answer is correct​
GalinKa [24]

Answer:

perimeter = 28.13 cm

Step-by-step explanation:

Calculate the length of a line drawn from A to C.

sin 85 = b/8, b = 7.97

cos 85 = c/8, c = 0.697

AC² =7.97² + (6 + 0.697)² = 63.52 + 44.85 = 108.37

AC = 10.41

Now you have a right triangle ADC with a known hypotenuse and  one leg.

Using the Pythagorean theorem:

DC² = 10.41² - 5²

DC² = 108.37 - 25 = 83.37

DC = 9.13 cm

perimeter = 5 + 6 + 8 + 9.13 = 28.13 cm

8 0
2 years ago
evan has a job selling magazine and newspaper subscriptions. he earns $23 for each magazine subscription and $54 for each newspa
SashulF [63]
First we write the variables already defined:
 m = the number of magazine subscriptions sold
 n = the number of newspaper subscriptions sold
 We now write the system of inequations based on the following facts:
 "he earns $ 23 for each magazine subscription and $ 54 for each newspaper subscription that he sells. his goal is to make more than $ 642 per week"
 23m + 54n> 642
 "I have expectations to sell at least 10 subscriptions per week"
 m + n> = 10
 Answer: 
 A system of inequalities that models the given situation is: 
 23m + 54n> 642 
 m + n> = 10
5 0
3 years ago
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