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2 years ago

HURRY TWO MINUTES PLEASE HURRY DO IT FAST

Mathematics

2 answers:

Sholpan [36]2 years ago

7 0

Answer:

Step-by-step explanation:

First, expand the function with FOIL

(3x - 4)(-6x + 5)

(-18x² + 15x + 24x - 20)

Combine like terms

(-18x² + 39x -20)

This is a quadratic function because it has x² and linear functions just have x.

So, B is the answer because it is quadratic and it has the correct quadratic, linear, and constant terms.

Tems11 [23]2 years ago

7 0

Answer:

Step-by-step explanation:

-18x^2+39x-20

ax^2+bx+c

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3. Find the value of x and y. (80 ) yo (3x +20)

Ugo [173]

Answer:

make him brainliest not me

Step-by-step explanation:

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3 years ago

Two friends share 7 cookies how many cookies do each of them get

Goshia [24]

Answer:

3.5 cookies

Step-by-step explanation:

Hi there!

Well, assuming they get the same amount of cookies, you'd do 7/2..

7/2=3.5

So they'd each get 3.5 cookies.

Have a great day! ^u^

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3 years ago

Help its urgent!! I can not figure it out!!

gladu [14]

What is the problem?

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3 years ago

A forestry researcher wants to estimate the average height of trees in a forest near Atlanta, Georgia. She takes a random sample

marusya05 [52]

Answer:

The margin of error for her confdence interval is of 0.3757.

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 18 - 1 = 17

99% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 17 degrees of freedom(y-axis) and a confidence level of $1 - \frac{1 - 0.99}{2} = 0.995$ . So we have T = 2.8982

The margin of error is:

$M = T\frac{s}{\sqrt{n}}$

In which s is the standard deviation of the sample and n is the size of the sample.

Standard deviation of 0.55 meters.

This means that $s = 0.55$

What is the margin of error for her 99% confidence interval?

$M = T\frac{s}{\sqrt{n}}$

$M = 2.8982\frac{0.55}{\sqrt{18}}$

$M = 0.3757$

The margin of error for her confdence interval is of 0.3757.

7 0

2 years ago

Can somebody help me out? s/4 ? = 4

Yuki888 [10]

Answer:

If you are asking S/4=4 (as in what does S equal) the answer is 16

Step-by-step explanation:

4x4= 16

so 16/4=4 :)

7 0

3 years ago