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3241004551 [841]
3 years ago
14

A new class entered the school, and the population increased by 14.2%. Then a few students left the school, and the population d

ecreased by 0.8% to 1341 students. How many students were in the school before the increase, and how many left? Show your thinking. no links
Mathematics
1 answer:
Andrews [41]3 years ago
7 0

Answer:

780 students according to my calculations

Step-by-step explanation:

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The local newspaper has letters to the editor from 20 people. If this number represents 8​% of all of the​ newspaper's readers,
zlopas [31]

let the all readers be x

8%=20×100%÷x

8%x=2000%

x=2000%÷8%

x=250

3 0
3 years ago
A garden supply store sells two types of lawn mowers. Total ales of mowers for the year were $8379.70. The total number of mower
Anestetic [448]

Answer:

The number of small mowers are 19 and the large mowers are 11.

Step-by-step explanation:

Given:

A garden supply store sells two types of lawn mowers. Total sales of mowers for the year were $8379.70. The total number of mowers sold the 30. The small mower cost $249.99 and the large mower costs $329.99.

Now, to find the number of each type of mower sold.

Let the number of small mower be x.

And the number of large mower be  y.

So, total number of mowers are:

x+y=30

x=30-y\ \ \ ....(1)

Now, the total sales of mowers are:

249.99(x)+329.99(y)=8379.70

Substituting the value of x from equation (1) we get:

249.99(30-y)+329.99y=8379.70

7499.7-249.99y+329.99y=8379.70

7499.7+80y=8379.70

<em>Subtracting both sides by 7499.7 we get:</em>

80y=880

<em>Dividing both sides by 80 we get:</em>

y=11.

The number of large mower = 11.

Now, to get the number of small mowers we substitute the value of y  in equation ( 1 ):

x=30-y\\x=30-11\\x=19.

The number of small mower = 19.

Therefore, the number of small mowers are 19 and the large mowers are 11.

6 0
3 years ago
Pleas help I will give brainliest also please show how you did it please
Serggg [28]

Answer:

for n ≤ 3

we are going to put a circle on the 3 and make it filled in then you are going to start an arrow starting from the 3 going to the left all the way to the -10.

4 0
3 years ago
Read 2 more answers
Match the solid figure to the appropriate formula.
Zinaida [17]
<span>1. A = 1/4s squared, square root of 3      equilateral triangle
2. A = bh                                                  rectangle  
3. A = pi(r) squared                                  circle area 
4. A = 1/2 h (b1+ b2)                                trapezoid
5. C = pi(d)                                               circle circumference 
6. A = base x altitude                               parallelogram
7. A = 1/2(ap)                                           regular polygon
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</span><span>- regular polygon
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4 0
3 years ago
The width of a rectangle is 2 cm less than 8 times the length. The perimeter is 68 cm. What are the width and length of the rect
eduard

Answer:

length=4

width=30

Step-by-step explanation:

length=x

width=8x-2

(8x-2)*2+2x=68

16x-4+2x=68

18x=72

x=4 (Length)

4*8=32, 32-2=30(width)

8 0
3 years ago
Read 2 more answers
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