3 years ago

Help me please!!!!!!

Mathematics

2 answers:

Verdich [7]3 years ago

7 0

Answer:

Step-by-step explanation:

disa [49]3 years ago

7 0

Answer:

Step-by-step explanation:

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Factor the polynomial 3x4 – 2x2 + 15x2 - 10 by grouping.

prohojiy [21]

Answer:

see explanation

Step-by-step explanation:

Given

3 $x^{4}$ - 2x² + 15x² - 10

Factor the first/second and third/fourth terms )

= x²(3x² - 2) + 5(3x² - 2) ← factor out (3x² - 2) from each term

= (3x² - 2)(x² + 5)

4 0

3 years ago

Read 2 more answers

A certain region of America with over 500,000 households has a mean household income of $70,000 with a standard deviation of $20

Llana [10]

Answer:

Mean = 70,000 dollars

SD = 800 dollars

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Step-by-step explanation:

3 0

3 years ago

Chau's shop sells quarts of ice cream each day. How much is this in pints?

barxatty [35]

Answer:

One quart is 2 pints

Step-by-step explanation:

multiply the number of quarts by 2 to get the number of pints.

5 0

4 years ago

The question is:

saul85 [17]

$f(x) = \sqrt{x+1} \\ y = \sqrt{x+1} \ or \ y^2 = x+1 \ or \ x = y^2 - 1 \\ Therefore, \ f^{-1}(x)=x^2 - 1$

$(fof^{-1})(a) = f(f^{-1}(a))=f(a^2-1) \\ =\sqrt{a^2-1+1}=\sqrt{a^2}=a \\ \\ (f^{-1}of)(a)=f^{-1}(f(a))=f^{-1}(\sqrt{a+1})= \\ (\sqrt{a+1})^2-1 = a+1-1 = a$

Therefore, $(fof^{-1})(a) = (f^{-1}of)(a) = a$

8 0

3 years ago

Edward is driving a car on the highway. He drives for 28.5 miles in 3/8 of an hour. At this rate, how much distance can he cover

kari74 [83]

Answer:

76 Miles.

Step-by-step explanation:

28.5/3=9.5

9.5(8)=76

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3 years ago