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2 years ago

Help help help help please

Mathematics

2 answers:

Dima020 [189]2 years ago

4 0

Answer:

x=8

Step-by-step explanation:

hope it helps :D

lana66690 [7]2 years ago

4 0

Answer: 4

Step-by-step explanation: The coefficient is the number being multiplied by a variable, so, since 4 is being multiplied by x, 4 would be the coefficient.

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(5 Points) all (1 – 3K) -396 0-374 0 -198 0 -187

Triss [41]

Answer:−3K−395,−374,−198,−187

Step-by-step explanation:

Remove parentheses.

1−3K−396,0−374,0−198,0−187

Simplify 1-3K-3961−3K−396 to -3K-395−3K−395.

−3K−395,0−374,0−198,0−187

Simplify 0-3740−374 to -374−374.

−3K−395,−374,0−198,0−187

Simplify 0-1980−198 to -198−198.

−3K−395,−374,−198,0−187

Simplify 0-1870−187 to -187−187.

−3K−395,−374,−198,−187

6 0

3 years ago

What are the relative frequencies, to the nearest hundredth, of the rows of the two-way table?

sveta [45]

Answer: A B

Group 1 0.25 0.75

Group 2 0.44 0.56

Step-by-step explanation:

Since we have given that

Number of people of A in group 1 = 15

Number of people of B in group 1 = 45

Total number of people in group 1 is given by

$15+45=60$

Relative frequency of people of A in Group 1 is given by

$\frac{15}{60}=0.25$

Relative frequency of people of B in Group 1 is given by

$\frac{45}{60}=0.75$

Similarly, Number of people of A in group 2 = 20

Number of people of B in group 2 = 25

Total number of people in group 2 is given by

$20+25=45$

Relative frequency of people of A in Group 2 is given by

$\frac{20}{45}=0.44$

Relative frequency of people of B in Group 2 is given by

$\frac{25}{45}=0.56$

Hence, A B

Group 1 0.25 0.75

Group 2 0.44 0.56

6 0

3 years ago

If 55% of a number is 132 and 25% of the same number is 60, find 80% of that number.

UNO [17]

Answer:

192

Step-by-step explanation:

It is always wise to look carefully at the question to see what information is given, and what information you are asked for. You are given two different fractions of the same number, and you want the value of a third fraction of that number. That third fraction is the sum of the other two.

The value of 80% of the number will be the sum of 55% and 25% of the number.

n×80% = n×55% +n×25%

n×80% = 132 +60

n×80% = 192

80% of the number is 192.

_____

Additional comment

Your first clue that there may be something special about this problem lies in the fact that one fraction of a number is all you need in order to find any other fraction. Here, we're given two fractions (55% and 25%), so that is more information than we need. Why? Because it simplifies the problem to one of addition. No proportions need to be solved.

If you were interested, you could determine 100% of the number to be ...

132/n = 55/100 ⇒ n = 132(100/55) = 240

60/n = 25/100 ⇒ n = 60(100/25) = 240

Then ...

0.80n = 0.80(240) = 192 . . . . 80% of the number

Or, you could write proportions for the 80% value:

80%/55% = n/132 ⇒ n = 132(80/55) = 192 . . . . 80% of the number

80%/25% = n/60 ⇒ n = 60(80/25) = 192 . . . . 80% of the number

"Look carefully" includes thinking about the ways the givens and the finds are related.

4 0

2 years ago

+00

PolarNik [594]

Answe HINTTTTTTTTTTTTTTTTTTTTTTTT

Step-by-step explanation:

5 0

3 years ago

Let ax-by=c, where a,b,c>0. Rewrite the equation in slope-intercept form

Elis [28]

Here we are required to rewrite the equation ax-by=c, where a,b,c>0 In the slope-intercept form.

The slope-intercept form of ax-by=c is ;

y = (a/b)x - (c/b).

There a no. of ways to write the equation of a line; however, the most popular of these ways is the slope-intercept form.

The slope-intercept form usually takes the form ; y = mx + c.

Therefore, the equation ax-by=c can be rewritten thus;

ax - c = by
By divIDing both sides of the equation by b, we have ;
(a/b)x - (c/b) = y

Consequently, the slope-intercept form of ax-by=c is ;

y = (a/b)x - (c/b).
where , (a/b) is the slope(m)
and (-c/b) is the intercept(c).

Read more:

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4 0

3 years ago