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Tju [1.3M]
3 years ago
6

Find the value of the expression 4xwhere x=7​

Mathematics
1 answer:
snow_lady [41]3 years ago
6 0

Answer:

28

Step-by-step explanation:

4x

4(7)

4 x 7

28

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For which intervals is the function decreasing?
lilavasa [31]

Answer:

The function is decreasing in the following intervals

A. (0, 1)

C. (2, pi)

Step-by-step explanation:

To answer this question, imagine that you draw lines of slope m parallel to the function shown at each point.

-If the slope of this line parallel to the function is negative for those points then the function is decreasing.

-If the slope of this line parallel to the function is positive for those points then the function is increasing.

Observe in the lines drawn in the attached image. You can see that they have slope less than zero in the following interval:

(0, 1) U (2, pi)

Therefore the correct option is:

A. (0, 1)

C. (2, pi)

5 0
3 years ago
A group of pennies made in 2018 are weighed. The mean is approximately 2.5 grams
Hatshy [7]

Answer:

*  The mean (a measure of central tendency) weight value is the average of the weights of all pennies in the study.

* The standard deviation (a measure of variability or dispersion) describes the lowest and highest any individual penny weight can be. Subtracting 0.02g from the mean, you get the lowest penny weight in the group.

Step-by-step explanation:

Recall that a penny is a money unit. It is created/produced, just like any other commodity. As a matter of fact, almost all types of money or currency are manufactured; with different materials ranging from paper to solid metals.

A group of pennies made in a certain year are weighed. The variable of interest here is weight of a penny.

The mean weight of all selected pennies is approximately 2.5grams.

The standard deviation of this mean value is 0.02grams.

In this context,

*  The mean (a measure of central tendency) weight value is the average of the weights of all pennies in the study.

* The standard deviation (a measure of variability or dispersion) describes the lowest and highest any individual penny weight can be. Subtracting 0.02g from the mean, you get the lowest penny weight in the group.

Likewise, adding 0.02g to the mean, you get the highest penny weight in the group.

Hence, the weight of each penny in this study, falls within

[2.48grams - 2.52grams]

4 0
3 years ago
PLEASE ANSWER WILL MARK BRAINLIEST TO FIRST ANSWER.
Inga [223]

Answer:

60 I think

Step-by-step explanation:

125 + 115=240

240-180÷60

3 0
3 years ago
Read 2 more answers
What is the property of 3m x 1 =3m
Kipish [7]

Answer:

Assuming this is for a Conic Section. There is no property as it does not match a conic section.

8 0
2 years ago
While solving the
kvv77 [185]

Answer:

Multiplication of Alzebra

method has been used by Natalie

8 0
3 years ago
Read 2 more answers
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