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3 years ago

An item is regularly priced at

Mathematics

1 answer:

leva [86]3 years ago

8 0

It would be 60% of the original price, of discount amount in 40%

Then, 40*60 / 100 = 2400/100 = 24

So, he bought the item @ $24

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If a circle has a diameter of 30 meters, which expression gives its area in

sattari [20]

Answer:

C. 15²π

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Geometry

Diameter: d = 2r
Area of a Circle: A = πr²

Step-by-step explanation:

Step 1: Define

d = 30 m

Step 2: Find Area

Substitute [D]: 30 m = 2r
Isolate r: 15 m = r
Rewrite: r = 15 m
Substitute [AC]: A = π(15 m)²
Rearrange: A = 15²π

3 0

3 years ago

Simplify cos^2 A/1+sin A

Stels [109]

Answer:

$\displaystyle \frac{\cos^2(A)}{1+\sin(A)}=1-\sin(A)$

Step-by-step explanation:

We want to simplify:

$\displaystyle \frac{\cos^2(A)}{1+\sin(A)}$

Recall the Pythagorean Identity:

$\sin^2(A)+\cos^2(A)=1$

So:

$\cos^2(A)=1-\sin^2(A)$

Substitute:

$\displaystyle =\frac{1-\sin^2(A)}{1+\sin(A)}$

Factor. We can use the difference of two squares pattern:

$\displaystyle =\frac{\left(1-\sin(A))(1+\sin(A))}{1+\sin(A)}$

Cancel. Hence:

$\displaystyle \frac{\cos^2(A)}{1+\sin(A)}=1-\sin(A)$

7 0

3 years ago

Which of the following situations can be modeled by the expression 5 - (-3)?

Sedaia [141]

Answer:the first option

Step-by-step explanation:

8 0

2 years ago

What is the answer to -2(-4x-3)-5x+3=-3

Novosadov [1.4K]

Answer:

X= -4

Step-by-step explanation:

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3 years ago

Read 2 more answers

Mike and Jed went at 10:30 am they skied for 1 hour and 55 minutes before stopping for lunch at what time did mike and Jed stop

Oxana [17]

Answer:

They stopped for lunch at 12:25 pm.

Step-by-step explanation:

They started skyiing at 10:30 am.

They skied for 1 hour and 55 minutes.

1 hour and 55 minutes is 5 minutes less than 2 hours.

2 hours after 10:30 am is 12:30 pm.

Taking the 5 minutes, we have 12:25 pm

They stopped for lunch at 12:25 pm.

4 0

3 years ago