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Bumek [7]
2 years ago
11

3r+n^2-r+5-2n+2 simplify

Mathematics
1 answer:
andrey2020 [161]2 years ago
4 0
3r+n^2-r+5-2n+2=n^2-2n+(3r-r)+(5+2)\\\\=\boxed{n^2-2n+2r+7}
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A survey asked 40 students if they play an instrument and if they are in band
KIM [24]

Answer:

c

Step-by-step explanation:

25 can play - 5 aren't in the band

15 people don't play an instrument

The total of the two is 40

8 0
3 years ago
Two boxes have the same volume. One box has a base that is 2 inches by 2 inches. The other box has a base that is 4 inches by 4
lianna [129]

Answer:

4 times as tall.

Step-by-step explanation:

Volume of the box with the smaller base = 2*2* h1 = 4h1 where h1 is its height.

Similarly the volume of the larger base box =  4*4 * h2 = 16h2 with height h2.

So the ratio of their volumes is  16h2 / 4h1 = 4h2 / h1.

Now the volumes are equal so 4h2 = h1.

Therefore   h2 = h1/4  so h1 = 4h2.

The box with the smaller base is 4 times as tall as the other box.

3 0
3 years ago
Read 2 more answers
9x + 1 i need help plz ( again my brain is not working.)
madam [21]

Answer:

9x + 1 = 9x + 1. . LISTEN BECAUSE WHWN 9X IS WITH BASE AND IN 1 THERE IS NO X IN 1. SO,WHEN THERE BASE ARE EQUAL THEN ONLY WE CAN CALCULATE IT.OR TO DO ANY EQUATION OF IT.

4 0
3 years ago
Read 2 more answers
A cartoon having 50 oranges weight 7.5 kg how much will thousand oranges weight​
vodka [1.7K]

Answer:

150kg

Step-by-step explanation:

50 oranges ----- 7.5 kg

1000 -------   x

50 * x = 1000 * 7.5

x = 7500 / 50

= 750/5

=150

4 0
2 years ago
Which number completes the system of linear
LiRa [457]

The number that completes the System of Linear Inequalities represented by the Graph y >= 2x – 2 and x + 4y > =  is -12. Hence, x + 4y \geq -12

<h3>What is a System of Linear Inequalities?</h3>

A collection of linear inequalities in the same variables is referred to as a system of linear inequalities. Any ordered pair that fulfills all of the inequalities is the solution.

<h3>What is the calculation to prove the above assertion?</h3>

Recall that:

  • The linear equation with slope m and intercept c is given as follows.

y = mx + c

  • The formula for slope of line with points  and  can be expressed as

m = (y2 - y1)/(x2 - x1)

Given that

The orange line intersects y-axis at (0,-2), therefore the y-intercept is -2.

The orange line intersect the points that are (1,0)  and (0, -2).

The slope of the line can be obtained as follows:

m = (-2-0)/(0-1)

= -2/-1

= 2

The slope of the line is m = 2.

Therefore, the orange line is y \geq 2x -2

The blue line intersects y-axis at (0,-3), therefore the y-intercept is -3.

The blue line intersect the points that are (-4, -2) and  (0, -3)

The slope of the line can be obtained as follows.

m = (-3-(-2))/(0-(-4))

= (-3 + 2)/4

= - (1/4)

The slope of the line is:
m = -(1/4)

The inequalities is x + 4y \geq b passes through the point (0, -3)

(0) + 4 (-3) = b

-12 =b

Thus, -12 in is the number that completes the system. Hence, x + 4y \geq -12

Learn more about system of inequalities at;
brainly.com/question/9774970
#SPJ1

4 0
1 year ago
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