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Aleksandr-060686 [28]
4 years ago
6

A class has 27 students. Fifteen are boys and the rest are girls. What is the ratio of girls to total students?

Mathematics
2 answers:
LenaWriter [7]4 years ago
8 0

Answer:

12:27

Step-by-step explanation:

27 - 15 = 12

There are 12 girls and 15 boys.

12:27 is the ratio of girls to the total amount of students.

MAVERICK [17]4 years ago
4 0

Answer:

4 : 9

Step-by-step explanation:

Girls = 27 - 15 = 12

=> The ratio of girls to total students will be: 12 : 27 or 4 : 9

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nasty-shy [4]

Answer:

Bowler World: C = 1.1 g + 5

Lucky Spares: C = 1.5 g + 3

The cost is the same for 5 games, The cost is $10.50

Step-by-step explanation:

5+1.1(5) = 5+5.5=10.50

3+1.5(5) = 3+7.5=10.50

Hopefully, this helped :)

3 0
3 years ago
Do you have an equal chance of landing in either 1 or 4?
vitfil [10]

Answer:

Yes

Step-by-step explanation:

Since the circle is split into 6 pieces, we can split the probability of landing on each section into fractions

There is one piece with the number 1 on it, so there is a 1/6 chance of landing on that.

There are 3 pieces with the number 2 on it, so there is a 3/6 chance of landing on it, simplifies that would be 1/2

There is one piece with the number 3 on it, so there is a 1/6 chance of landing on that.

There is one piece with the number 4 on it, so there is a 1/6 chance of landing on that.

Since the pieces with a 1 and 4 on the both have a 1/6 probabilit of landing, there is an equal chance on landing on either tile.

4 0
3 years ago
445 randomly selected light bulbs were tested in a laboratory, 316 lasted more than 500 30) hours. find a point estimate of the
Aleksandr-060686 [28]
Total number of bulbs tested, N = 445
Number of bulbs that lasted more than 500 hrs, x = 316

Point estimate of bulbs that lasted more than 500 hrs = x/N = 316/445 ≈ 0.71 = 0.71*100 = 71%
5 0
3 years ago
Anyone know how to solve inverse of functions ? plz help
Kazeer [188]

In each let y = f(x) and rearrange making x the subject

(7)

y = 3x + 9 ( subtract 9 from both sides )

3x = y - 9 ( divide both sides by 3 )

x = \frac{y-9}{3}

change y back into terms of x

f^{-1}(x) = \frac{x-9}{3}

(8)

y = 5x - 2

5x = y + 2 ( divide both sides by 5 )

x = \frac{y+2}{5}

f^{-1}(x) = \frac{x+2}{5}

(9)

y = - x + 2

x = 2 - y

f^{-1}(x) = 2 - x

(10)

y = - 4x + 3

4x = 3 - y ( divide both sides by 4 )

x = \frac{3-y}{4}

f^{-1}(x) = \frac{3-x}{4}

(11)

y = 0.5x - 2

0.5x = y + 2 ( divide both sides by 0.5 )

x = 2(y + 2)

f^{-1}(x) = 2x + 4

(12)

y = - 0.25x + 6

0.25x = 6 - y ( divide both sides by 0.25 )

x = 4(6 - y )

f^{-1}(x) = 24 - 4x


4 0
3 years ago
How many​ one-to-one correspondences are there between two sets with 5 elements​ each?
Fittoniya [83]
1st element can be matched with 5
2nd element can be matched with 4
3rd element can be matched with 3
etc.
Total number of correspondences = 5*4*3*2*1 = 120
7 0
4 years ago
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