Scores on an AP Exam at a local high school are recorded in the table. What was the average score? A) 0.234 B) 3 C) 3.5 D) 4.266

Answers

Answer 1

Answer: we need the scores in order to find the answer

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If four times a number plus 3 is 11, what is the number?A. 4
B. 5
C. 16
D. 2

Answers

It is very important to readthe question very minutely before going for solving the problem.
Let us assume the unknown number to be = x
Then
4x + = 11
4x = 11 -3
4x = 8
x = 8/4
= 2
So we can see from the above deduction that the unknown number is 2. The correct option among all the options given in the question is option "D". I hope the procedure is clear enough for you to understand.

Find 7% of 280
Find 12% of 300
Find 2% of $1250

Answers

percent means parts out of 100
7%=7/100=0.07
'of' means multiply so

7%=0.7
7% of 280=0.07 times 280=196

12%=0.12
12% of 300=36

2%=0.02
2% of $1250=$25

Factor completely w^4-2401

Answers

$w^4-2401=(w^2)^2-49^2=(w^2-49)(w^2+49)=(w^2-7^2)(w^2+49)\n\n=(w-7)(w+7)(w^2+49)\n\n------------------------------\n\na^2-b^2=(a-b)(a+b)$

$w^4-2.401 \n =(w^2+49)(w^2-49) \n =(w^2+49)(w-7)(w+7)$

A family wants to have 4 children. Design and do a simulation to determine the probability that, if they do have 4 children, they will have two boys and two girls. (Hint: Use coins.)

Answers

Let B represent boy and G represent girl, Then sample space

BBBB, BBBG, BBGB, BGBB, GBBB, BBGG, BGBG, GBBG, BGGB, GBGB, GGBB, BGGG, GBGG, GGBG, GGGB, GGGG

Two boys and two girls appeared in 6 situations.

Therefore, P(6 boys and 6 girls) = 6/16 = 3/8

Answer:

Using B as the boy and G as the girl, sample space

GGBB, BGGG, GBGG, GGBG, GGGB, GGGG, BBBB, BBBG, BBGB, BGBB, GBBB, BBGG, BGBG, GBBG, BGGB, GBGB, GGGG

Six different scenarios featured two boys and two girls.

P(6 boys and 6 girls) = 6/16 = 3/8 as a result.

Step-by-step explanation:

rahehehe

A test has 10 true/false questions. How many different tests can be turned in to the teacher?

Answers

The same as the greatest number that can be written
with 10 binary bits: 1,024

Each question has 2 possible answers. There are 10 questions.

1 - 2
2 - 2
3 - 2
4 - 2
5 - 2
6 - 2
7 - 2
8 - 2
9 - 2
10 2 There can be 20 different tests.

The concert lasts 60 minutes, and the songs are all the same length. The choir sings a total of 12 songs, 2 of which are sung by the sopranos only. For how many minutes do the sopranos sing by themselves? Solve the equations using a letter for the unknown quantity.

Answers

60mins= 12x
60/12=12x/12
5=x
x= length of songs
5 x 2= 10 mins soprano sings by themselves

Answer:

10 minutes

Step-by-step explanation:

60 / 12 = 5

5 *2 = x=10

this means that x = 10

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