A=(1,4,5,7} B={1,7,9,12} find A n B

Answers

Answer 1

Answer:

A=[1,4,5,7], B=[1,7,9,12]

AnB= [1,7]

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Help me with this problem please

Answers

cos 15 = 9/x
x = 9/cos 15
x = 9.317

For cos you just subtract from 90

A quiz has 50 multiple choice questions. Each question has 3 possible answers, one of which is correct. A correct answer is worth 2 points, but a point is taken off for each incorrect answer. A student answers all 25 questions by guessing at random. In each case present the problem with an appropriate box model. Find the expected value and the standard error for the sum of 25 draws. Interpret this sum in terms of the scores.

Answers

She or he would get a 75%

Ten times the quotient of 104 and 8

Answers

Quotient means division so you divide 104 and 8 and get 13 then multiply by ten to get 130 as your answer

The answer would be 130 for the answer. When you divide 104 by 8, you get 13. 3 times 10 is 130. Hope this helped :)

Use log b 2=0.693 and /or log b 7 = 1.946
to find log b 14

Answers

$We\ know:log_a(b\cdot c)=log_ab+log_ac\n\ntherefore:\n\nlog_b14=log_b(2\cdot7)=log_b2+log_b7=0.693+1.946=2.639$

Write cos 29° in terms of sine.
Help pls :(

Answers

Answer:

0.48480962

Step-by-step explanation:

1. Take the sine of 29 ° .

sin ( 29 ° )

2. Evaluate sin ( 29 ° ) .

0.48480962

The area of a rectangular pool is (14x^2+21x) square feet. If it is 7x feet long, what is the width, in feet?

Answers

(14x^2+21x) = 7x(2x + 3)

A= L * W

but L = 7x so W = 2x + 3

answer: width is (2x +3) feet

Answer:

you get (2x+3), because 14 divided by 7 = 2 and 21 divided by 7 = 3

Step-by-step explanation:

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