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Help.. ill give brainliest..

Answers

Answer 1

Answer:

Answer:

Hi there

1. 28

2. -18

3. -26

4. 14

5. -7

6. 2

7. -17

8. 12

9. -12

10. -15

11. 24

12. 8

13. 2

14. 4

15. - 23

16. - 9

Step-by-step explanation:

there is a easy step to integers

1. if there is a plus then minus or vice versa way then u should subtract .

( + - = - )

2. if there are two plus signs then, add .

( + + = + )

3. if there are two minus signs then , subtract

( - - = - )

hope u understand

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6 X 9 =6 X (5 + 4)6 X 9 = (6 X 5) + (6 X 4)6 X 9 =6 X 9 =54
Please help 30 points plus brainlyist who does firstDetermine which expressions can be simplified further, and which cannot. Sort the expressions into the correctcategory2x + 3yCan Be SimplifiedCannot Be Simplifiedx + x4r +7y + 14y + 4xy + 2y

Give B (-4,-6) under which selection is B'(4,6)?

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The answer to this is reflected in the y-axis

Which formula shows a joint variation?

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The answer is the first option: I, II and III.

The explanation is shown below:

1. By definition, there is a joint variation when a variable depends on two or more different variables. Therefore, you can express it as following:

$y=kxz$

Where $x,y$ and $z$ are the variables and $k$ is the constant of proportionality.

As you can see, $y$ is directly proportional to $x$ and $z$ .

2. Keeping the information above, you have:

I) $V=lwh$ ( $V$ varies jointly with $l$ , $w$ and $h$ .

II) $V=(1)/(3)r^(2)h\pi$ (If $(\pi)/(3)$ is the constant of proportionality, $V$ varies jointly with $r^(2)$ and $h$ ).

III) $V=Bh$ ( $V$ varies jointly with $B$ and $h$ .

Answer : I, II and III

To find volume formula that shows joint variation we analyze each option

Joint variation always depends on atleast two dependent variables

for example y = kxy

The variable y depends on x and y and k is constant of proportionality

V= lwh

It means volume depends on length , width and height. 1 is the constant of proportionality .

$v=(1)/(3) \pi r^2h$

V depends on radius r and height h. Here 1/3 pi is the constant of proportionality

V= BH

V depend on base b and height h . 1 is the constant of proportionality .

So answer is I, II , III

What is 6 minutes 30 seconds converted to minutes?

Answers

Answer:

6.5 minutes

Step-by-step explanation:

A bridge in the shape of a parabolic arch is modelled by this function (see pic).

Answers

Answer:

An automobile manufacturer would like to know what proportion of its customers are dissatisfied with the service received from their local dealer. The customer relations department will survey a random sample of customers and compute a 95% confidence interval for the proportion that are dissatisfied. From past studies, they believe that this proportion will be about 0.28. Find the sample size needed if the margin of error of the confidence interval is to be no more than 0.02. (Round your answer up to the nearest whole number.)

Answers

Answer:

The sample size needed if the margin of error of the confidence interval is to be no more than 0.02.

n= 2015

Step-by-step explanation:

Given the customer relations department will survey a random sample of customers and compute a 95% confidence interval for the proportion that are dissatisfied

Given data from past studies, they believe that this proportion will be about 0.28

The proportion of success(p) = 0.28

We know that the margin of error of 95% of intervals of given proportion

margin of error = $(2√(p(1-p) )/(√(n) )$ …(i)