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2 years ago

Add the polynomials. (7y^2+2y-9)+(-3y^2-y) = ?

Mathematics

1 answer:

Vikki [24]2 years ago

3 0

$(7 y^{2} + 2y - 9) + (-3 y^{2} -y) \\ 
 \\ 
= 4y^{2} + y - 9$

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To one-one functions g and h are defined as follows.

Andreyy89

Answer:

9
(x-8)/3
-1

Step-by-step explanation:

The inverse function for a set of ordered pairs can be found by swapping the x- and y-coordinates in each pair.

$g^{-1}(-1)=9\qquad\text{from the $g(x)$ ordered pair $(9, -1)$}$

The inverse of a function expressed algebraically can be found by swapping the x- and y-variables and solving for y.

$h^{-1}(x)\qquad\text{is found from }x=h(y)\\\\x=3y+8\\x-8=3y\\\\y=\dfrac{x-8}{3}\\\\\boxed{h^{-1}(x)=\dfrac{x-8}{3}}$

A function of its own inverse returns the original value:

$\boxed{\left(h\circ h^{-1}\right)(-1)=-1}$

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3 years ago

(3, -4), (5, 1)<br><br> Find the slope of the line through each pair of points?

Alika [10]

Answer:

m = 5/2

m = 2 1/2

m = 2.5

Step-by-step explanation:

8 0

2 years ago

Andrew has one book that is 2 3/7 inches thick and a second book that is 3.56 inches thick. If he stacks the books, about how ta

MA_775_DIABLO [31]

Answer:

6 inches

Step-by-step explanation:

So first you would make 2 3/7 a dismal. So that is 2.43. Then you add 2.43 and 3.56 to get 5.99 inches tall. The you round to the nearest whole number to get 6 inches.

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3 years ago

Hannah claims that people who live in southern states spend 9 hours more per week outside than do people in northern states. She

Aneli [31]

Answer: Hello your question is incomplete below is the missing part

Which of the following statements about Hannah’s claim is supported by the interval?

A) Hannah is likely to be incorrect because the difference in the sample means was 18.6−14.4=4.218.6−14.4=4.2 hours.

B) Hannah is likely to be incorrect because 9 is not contained in the interval.

C)The probability that Hannah is correct is 0.99 because 9 is not contained in the interval.

D)The probability that Hannah is correct is 0.01 because 9 is not contained in the interval.

E)Hannah is likely to be correct because the difference in the sample means (18.6−14.4=4.2)(18.6−14.4=4.2) is contained in the interval.

Answer : Hannah is likely to be incorrect because 9 is not contained in the interval. ( B )

Step-by-step explanation:

The statement that is supported by the interval in Hannah's claim is that

Hannah is likely to be incorrect because 9 is not contained in the interval.

5 0

2 years ago

64 percent rounds to the nearest

Serggg [28]

Tenth have to make answer longer for this app sorry

5 0

3 years ago