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Brrunno [24]
3 years ago
6

In an honors math class of 25 students, 15 are boys and 10 are girls. On the final exam, 6 boys and 3 girls received a grade of

A. If a student is chosen at
random from this class, what is the probability of choosing a girl or a student who did not receive an A on the exam?
1
0.76
2
0.64
3
0.40
0.28
Submit Answer
Mathematics
1 answer:
postnew [5]3 years ago
7 0

Answer:

Step-by-step explanation:

b=boy

a= a on the exam

b=15

b∩a=6

b'∩a=3

b'∪a'=?

b'∪a'= b'+a'-b'∩a'

a= b∩a+b'∩a (law of total probability) = 9

a'= 25-9 = 16

b'= 25-15= 10

16+10-7=19

19/25= .76

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Answer:

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Step-by-step explanation:

To solve this problem, you set up the equation 45+(2x-5)=180

Next, subtract 45 from 180 to get the equation 2x-5=135

After that, add 5 to 135 to get 2x=140

Divide 140 by 2 to get X=70

7 0
3 years ago
Skylar invested $3,100 in an account paying an interest rate of 3.3% compounded quarterly. Assuming no deposits or withdrawals a
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3 years ago
Find the remainder when x^5 - 3x^3 + x - 5 is divided by x - 2​
Viktor [21]

<u>Given</u><u> info</u><u>:</u><u>-</u> Find the remainder when x^5 - 3x^3 + x - 5 is divided by x - 2

<u>Solution:</u><u>-</u>

Given,

p(x) = x^5 - 3x^3 + x - 5 , g(x) = x - 2

Let g(x) = x-2 will be the factor of p(x) if p(2) = 0.

Now, p(x) = x^5 - 3x^3 + x - 5

p(2) = (2)^5 - 3(2)^3 + 2 - 5

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4 0
3 years ago
Can someone help me with 23?
maxonik [38]
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He spent total $4.50

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3 0
4 years ago
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Soloha48 [4]

Answer:

Job\ Time = 420\ minutes

Step-by-step explanation:

Given

Job\ Time = 7\ hours

Required

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To do this, we simply convert the time to minutes.

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7\ hours = 7 * 60\ minutes

So, we have:

Job\ Time = 7 * 60\ minutes

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<em>Hence, the job time in minutes is 420 minutes</em>

3 0
3 years ago
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