MATHEMATICS MIDDLE SCHOOL

I don’t which one it is?

Answers

Answer 1

Answer:

Answer:

7.351

I don't know how they have rounded; the closest answer is A

Step-by-step explanation:

The only way I know to do this is with the cos law

y^2 = x^2 + z^2 - 2*x*z cos(Y)

x = 22

z = 16

y = ?

I have serious doubts that this will make a triangle. I ran it though a calculator and it does work -- surprise for me. Substitute the givens.

y^2 = 256 + 484 - 2*10*22*cos(13)

y^2 = 740 - 704*cos(13)

y^2 = 740 - 704*0.9744

y^2 = 740 - 685.95

y^2 = 54.05 Take the square root of both sides

y = √54.05

y = 7.351

Answer 2

Answer:

Answer:

7.4

Step-by-step explanation:

The information given is in from SAS.

This is a job for law of cosines.

This is the law of cosines $a^2=b^2+c^2-2bc cos(A)$

The angle A is opposite side a and b,c are the other sides.

So 13 degrees is opposite the y there.

$y^2=16^2+22^2-2(16)(22)\cos(13)$

Now I'm going to put 16^2+22^2-2*16*22*cos(13) in my calculator:

$y^2=54.04347439$

Now one more step. To get rid of the square, you need to square root both sides:

$y=√(54.04347439)=7.351426691$

Sp the answer is approximately 7.4

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Amit buys a pair of jeans for$33. He must pay 7% salestax. He gives the cashier$40. How much changedoes he receive back?

Answers

The 7% sales tax is $2.31. Add that to the $33 to get $35.31. 40-35.31 is 4.69 so the change back is $4.69.

Evaluate.

(-5) x (-3) x (-4) + 61

A. -121
B. -1
C. 1
D. 121

Answers

The answer is C. C c c c c c c c. C c c c c c. C c c c c c. Cc c. C c c c c. C c. C

D correct me if I'm wrong please

Find the first five multiples of 9

Answers

The first five multiples of 9 are
9, 18, 27, 36, 45

9 ,18,27,36,45 that's the answer

A number x is less than 12

Answers

The solution is, the number is, x < 12

What is number?

A number is a mathematical object used to count, measure, and label. The original examples are the natural numbers 1, 2, 3, 4, and so forth. Numbers can be represented in language with number words.

here, we have,

A number would be:- x

Less than is >

x < 12

Hence, the number is : x < 12

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A number would be:- x
Less than is >

x < 12

Answer: x < 12

0.1 is 1/10 of what number

Answers

0.1 is 1/10 of 1
as 1 divided by 10 is 0.1
so the answer is 1
hope this helps

1 is the number as 1.0 is a whole number and 0.1 divides into it ten times

What's 28/42 simplified

Answers

The simplified form of the given fraction 28/42 will be 2/3. The correct answer would be option (B) 2/3.

What is simplification?

In arithmetic, the operation and interpretation of a function to make it simpler or easier to grasp is known as simplifying, and the process itself is known as simplification.

The fraction is given in the question, as follows:

28/42

Multiplication and divide by 14 into the above fraction,

(28/42) × (14/14)

Solving the above expression, we get

2/3

This is the simplified form of the given fraction.

Therefore, the correct answer would be option (B) 2/3.

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The complete question would be as: