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Elena L [17]
3 years ago
11

5+8(3+x) you have to simplify the expression. Please show your work and Explain

Mathematics
1 answer:
dedylja [7]3 years ago
6 0
Solve 5+8 and get 13(3+x) then muliply 13×3 and 13×X... you will end up with 39+13x
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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
there are 9000 four digit numbers. 4536 of the four digit numbers have no repeating digits. How many four digit numbers have at
Shtirlitz [24]

This is subtraction:

9,000-4,536=4,464

5 0
3 years ago
Please answer the question above and pick an answer choice from the ones provided
Ira Lisetskai [31]

Answer:

1,2 and 4 are equivalents. 3 is not equivalent

2P-I, mark that one :l

Step-by-step explanation:

3 0
2 years ago
Which equation has a graph that is a parabola with a vertex at (–1, –1)?
zzz [600]

y = {(x + 1)}^{2} - 1

The one is a vertical translation of the parent function to the left of one

f(x) = {x}^{2}

making it -1.

4 0
3 years ago
Read 2 more answers
The graph of a parabola has an axis of symmetry of and an intercept at . It passes through the point . What is the equation repr
Eddi Din [679]

Answer:

The answer is B! All I did was take a screenshot of your question and put on my page.

8 0
3 years ago
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