MATHEMATICS MIDDLE SCHOOL

What is the period of y = 2cos(3x - 2pi)?
A: 3pi
B: 6pi
C: 3pi - 2
D: 2pi/3

Answers

Answer 1

Answer:

Answer:

The correct option is D.

Step-by-step explanation:

The given function is

$y=2\cos (3x-2\pi)$ .... (1)

The general form of cosine function is

$y=A\cos (Bx-C)+D$ ... (2)

Where, A is amlitude, 2π/B is period, C is phase shift and D is midline.

From equation (1) and (2), we get

$B=3$

The period of the function is

$period=(2\pi)/(B)=(2\pi)/(3)$

Therefore the correct option is D.

Answer 2

Answer: The answer is D: 2pi/3

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Mrs. Dimas has $130 to buy basketballs for Edison Middle School

Answers

Mrs. Dimas has $130 to but basketballs for Edison Middle School. How many can she buy at $15 each? interpret the reminder

you can't go over budget

cost=cost per backetball times number of basketbals
cost=15 times b
cost≤130
15b≤130
divide both sides by 15
b≤8 and 10/15
b≤8 and 2/3
round down because you can't buy 2/3 basketball

buy 8
the remainder means you have 2/3 of $15 left or $10

Answer:

Step-by-step explanation:

Brown has his own bakery.He baked 5 cakes per day.Due to the occasion of Christmas, he started to bake 12 cakes per day.In the whole Christmas week how many cakes will he bake

Answers

7 times 12= 84 because there are 7 days in the week so multiply the 7 by the 12 cakes made each day of the week

There are 25 students in a class. 2/5 of them walk to school. Which method is a way to find the number of students who walk to school? Divide 25 by 5 and then multiply the quotient by 2.
Multiply 25 by 5 and then multiply that product by 2.
Multiply 1/25 by 2/5.
Multiply 25 and 5/2.

Answers

The correct option will be Divide 25 by 5 and then multiply the quotient by 2.

What is multiplication?

Multiplication is an operation that represents the basic idea of repeated addition of the same number.

Given that, There are 25 students in a class. 2/5 of them walk to school.

It is given that, 2/5 of the students walks to the school,

That mean, 2/5 part of the total student walks to the school,

Therefore,

25 x 2/5

= 10

Hence, The correct option will be Divide 25 by 5 and then multiply the quotient by 2.

Learn more about multiply, click;

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It is two out of 5 so, we have to be proportionate.
2/5 = ?/25
2 x 25 =50

50 divided by 5 = 10

So it would be: Divide 25 by 5 and then multiply the quotient by 2.

Here is the other part sorry

Answers

Answer:

1) 32/5

2) 19/8

3) 34/7

4) 25/3

How to do this

You take the denominator (the number on the bottom), multiply it by the whole number (like in 1, 5*6=30) then add the numerator (the top number) (so 30+2) then add on top of the denominator before you changed anything (32/5)

If tge price of a softball glove decreased from $60 to $36 what is the percent of decrease