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marysya [2.9K]
4 years ago
15

Calc Help Please!!! Urgent!!

Mathematics
1 answer:
tatyana61 [14]4 years ago
5 0

The derivative is just the slope.  So it's constant negative for the line up to x=-3.  Then we have a parabola that will go linearly from a positive slope to zero at the origin to a negative slope at x=3.  Then a constant positive slope.

So we're looking for flat negative line up to x=-3, linear starting positive and through the origin ending negative at x=3, then a flat positive.

Answer: third choice


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Write an algebraic rule for the trend line. Report your rule in slope intercept form.
Tju [1.3M]

Answer:

y = 5x + 20

Step-by-step explanation:

Here, we want to find the slope intercept form equation of the trend line

The general form is:

y =

mx + b

b is slope and m

is the y-intercept

b = 20

To get the slope, we select any two points and use the slope formula

we have the points;

(10,70) and (5,45)

The slope formula is;

m = (y2-y1)/(x2-x1) = (45-70)/(5-10) = -25/-5 = 5

The equation of the line is thus;

y = 5x + 20

4 0
3 years ago
Write 2/3 as a percent. Round your answer to the nearest tenth of a percent.
sweet [91]

divide 2 b 3

2 divided by 3 = 0.625

move decimal point 2 places to the right to turn to a percentage

0.625 = 62.5%

8 0
3 years ago
I need help please, I dont know how to do this
Oliga [24]

Answer:

Step-by-step explanation:

Odd numbers backwards - 9, 7, 5, 3

1 = -2+9=7

2 = -1+7=6

3 = 0+5=5

4 = 1 +3=4

3 0
3 years ago
Which is the area of the figure
VladimirAG [237]

Answer:

What figure are you talking about

6 0
3 years ago
Read 2 more answers
A consumer testing service tested whether the average baking time of whole wheat bread in gas ovens was less than the average ba
vichka [17]

Answer:

Part 1) The explanatory variable is the type of oven

It is a categorical variable

Part 2) The response variable is the baking time

It is a quantitative variable

part 3) two-sample z-test for proportions should be used for the test

Step-by-step explanation:

An explanatory variable is an independent variable that is not affected by all other variables. In this experiment, the type of oven is the input variable and it  is not affected by any other variable

A categorical variable is one that has two or more categories without any intrinsic ordering of the categories. The type of oven is either gas or electric, so it is categorical.

A response variable is a dependent variable whose variation depends on other variables. The baking time in this experiment depends on the type of oven used

A quantitative variable is one that take on numerical values.

A two proportion z-test allows you to compare two proportions to see if they are the same. The null hypothesis (H0) for the test is that the proportions are the same. The alternate hypothesis (H1) is that the proportions are not the same.

5 0
3 years ago
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