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2 years ago

Out of 120 high school boys and 80 high school girls, 45 tried out for track. Of those 45, 12 were girls.

1 answer:

5 0

So there are 33 boys who tried out for track. And this is 27.5 % of the total boys. And there 15% of the girls who tried out for the track. And in total 22.5 % of the total population tried out for track

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Whats the difference of squares

stepan [7]

An example of the difference of squares would be: a^2-b^2 = (a+b)(a-b)

6 0

3 years ago

The square shown has a perimeter of 32 units. The square is rotated about line k. what is the circumfrence of the base

boyakko [2]

The circumference equal to 25 units

<h3>What is perimeter of square?</h3>

The perimeter of square is 4 times the side.

P= 4* side

The perimeter of the square,

4x = P

Now P is = 32 units then,

32 units = 4(x)

x = 8 inches

So, the diameter of the cylinder formed by the rotation of 8 inches

Now, the circumference of the base is

C = 2πr = πD

If r =8 inches

C = π(8 units) = 8π units

C = 8(3.14) = 25.12 units

Hence, the circumference equal to 25 units

Learn more about perimeter of square here:

brainly.com/question/11495285

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6 0

2 years ago

If "i" is raised to an odd power, then it cannot simplify to be a)-1 b)-i c)i

3241004551 [841]

i ^1 = i
i ^ 2 = - 1
i ^ 3 = - i
i ^4 = 1
etc.
................
"i" raised to an odd power cannot simplify to be : A ) - 1

6 0

3 years ago

Read 2 more answers

Simplify: -3(m – 2) – 7m A. -10m + 6 B. -4m + 6 C. 4m – 6 D. 10m + 6

Masja [62]

The correct answer is A

4 0

3 years ago

Read 2 more answers

Bus A travels according to the function y = 125/5x where y is distance traveled in miles and x is time in hours. Bus B travels a

Yuki888 [10]

Answer:

Bus B travel faster

Step-by-step explanation:

The graph of the question in the attached figure

we know that

the linear equation in slope intercept form is equal to

$y=mx+b$

where

m is the slope

b is the y-intercept

x ---> is the time in hours

y ---> is the distance in miles

In this problem we have

Bus A

$y=\frac{125}{5}x$

The slope of the linear equation represent the speed of the bus

The speed of bus A is

$\frac{125}{5}=25\ miles/hour$

Bus B

Find the slope

take two points from the graph

(0,0) and (3,200)

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute

$m=\frac{200-0}{3-0}$

$m=66.67\ \frac{miles}{hour}$

Compare the slope Bus A with the slope Bus B

$66.67\ \frac{miles}{hour} > 25\ \frac{miles}{hour}$

therefore

Bus B travel faster

6 0

3 years ago