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Ann [662]
3 years ago
11

A math class has three girls and 7 boys in the 7th grade and five girls and five boys in the 8th grade the teacher randomly sele

cts a 7th grader and an 8th grader from the class 4A competition what is the probability that the students she select are boys write your answer as a fraction in simplest form
Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
7 0

Answer:

7/20

Step-by-step explanation:

Seventh grade: Total = 3 + 7 = 10

Number of boys = 7 boys

Probability of a boy being picked = 7/10

Eighth grade: Total 5 + 5 = 10

Number of boys = 5

Probability 5/10 = 1/2

The probability of the correct outcome = 7/10  *  1/2  = 7 / 20

Answer: 7 / 20

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The ratio of Mary’s downloaded iPad apps to Katie’s is 12 to 8. If Katie has 96 apps how many does Mary have?
sladkih [1.3K]
8×12=96. Katie
12×12=144. Mary
you have to Divide Katie's 96 by 8 to get 12
then take Mary's 12 and multiply it by 12 to get the answer of 144 apps that Mary owns

3 0
2 years ago
The expression below represents the number of flyers handed out at the school fair by 14 members of the student council, where x
siniylev [52]

Answer:

The first term indicates that the 14 student council members each handed out 22 flyers per additional minute of the fair. The second term indicates that the 14 members each handed out 25 flyers during the first minute of the fair.

Step-by-step explanation:

Given : The expression below represents the number of flyers handed out at the school fair by 14 members of the student council, where x is the number of minutes after the first minute of the fair. Assume that each student council member handed out the same number of flyers throughout the fair.  

Expression : 14(22x) + 350

To Find: Interpret the meaning of each term in the expression.

Solution:

14 denotes the number of members

x is the number of minutes after the first minute of the fair

22 denotes each handed out 22 flyers per additional minute of the fair.

350 =25 \times 14 denotes  each handed out 25 flyers during the first minute of the fair.

So, option A is true .

The first term indicates that the 14 student council members each handed out 22 flyers per additional minute of the fair. The second term indicates that the 14 members each handed out 25 flyers during the first minute of the fair.

6 0
3 years ago
Can someone help me find the answer to this problem 2(x-3)=14
lord [1]

Answer:4

Step-by-step explanation:

2x-6=14

2x=8

x=4

5 0
2 years ago
Read 2 more answers
There is a 30% sale today. what would the shoes that normally cost $125 now cost?
Katena32 [7]

Answer:

$37.50

Step-by-step explanation:

$125 times30%=$37.50

6 0
2 years ago
A 16 ounce bag of cereal cost $2.88 what is the cost per ounce
BabaBlast [244]

Answer: 0.18 (18 cents) per ounce

Step-by-step explanation:

2.88/16 = 0.18

5 0
2 years ago
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