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sergij07 [2.7K]
3 years ago
8

PLEASE HELP ME ! (I AM TERRIBLE AT MATH)

Mathematics
2 answers:
Viefleur [7K]3 years ago
7 0

Answer:

How many 21 - 40 year-olds surveyed are for an increase?  

25

How many 41 - 60 year-olds are against an increase?  

35

Step-by-step explanation:

Mashutka [201]3 years ago
4 0
It looks as though there are 25 21-40 year-olds. 40% of 25 is 10, this is the amount that are AGAINST the increase. Therefore the ones in favor for the increase must be 25 - 10 = 15. 

You should be able to follow the same process to get the 41-60 year-olds against an increase. Just be sure to read the given information carefully

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7 0
3 years ago
Find the residual if you know the actual number is 3 and the predicted value is 1.6
IgorC [24]

Answer:

The correct option is A.

Step-by-step explanation:

The difference between actual value and predicted value is called residual.

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e=y-\hat{y}

Where, y is observed value or actual value and \hat{y} is predicted value.

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e=1.4

The value of residual is 1.4 and option A is correct.

5 0
3 years ago
13. jewelry marena is using a certain number of blue beads in a bracelet
kherson [118]

The simplest expression that represents the total number of beads in her bracelet design is 2b + 7.

Expression:

An expression is the  sentence with a minimum of two numbers or variables and at least one math operation.

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The structure of an expression is:

Expression = (Number/variable, Math Operator, Number/variable)

Given,

Jewelry Marena is using a certain number of blue beads in a bracelet

design. she will use 7 more red beads than blue beads.

Here we need to write an expression in simplest form that represents the total number of beads in her bracelet design.

Assign a variable for the unknown value.

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Then we can written it as,

=> b + (b +7)

=> 2b + 7.

Therefore, the total number of beads can be written as 2b + 7.

To know more about Expression here.

brainly.com/question/14083225

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3 0
2 years ago
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Marta_Voda [28]

Answer:

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3 0
3 years ago
Which method listed below could not be used to prove that two triangles are congruent? Why?
OLEGan [10]
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8 0
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