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3 years ago

A game store owner buys a Nintendo Switch game for $22.50 and sells it with a 40% mark up. What is the retail price?

Mathematics

1 answer:

Orlov [11]3 years ago

8 0

Answer: $31.50

Step-by-step explanation:I think; $22.50 x .40=9

$22.50+9=$31.50

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Sin (3x) dx = ? find the integral

AVprozaik [17]

Answer:

$\displaystyle \displaystyle \int {sin(3x)} \, dx = \frac{-cos(3x)}{3} + C$

General Formulas and Concepts:

Calculus

Antiderivatives - Integrals

Integration Constant C

Integration Property [Multiplied Constant]: $\displaystyle \int {cf(x)} \, dx = c \int {f(x)} \, dx$

Trig Integration: $\displaystyle \int{sin(x)} \, dx = -cos(x) + C$

U-Substitution

Step-by-step explanation:

Step 1: Define

$\displaystyle \int {sin(3x)} \, dx$

Step 2: Identify Substitution Variables

u = 3x

du = 3dx

Step 3: Integrate

[Integral] Rewrite: $\displaystyle \frac{1}{3}\int {3sin(3x)} \, dx$
[Integral] U-Substitution: $\displaystyle \frac{1}{3}\int {sin(u)} \, du$
[Integral] Trig Integration: $\displaystyle \frac{1}{3}[-cos(u)] + C$
[Expression] Multiply: $\displaystyle \frac{-cos(u)}{3} + C$
[Expression] Back-Substitute: $\displaystyle \frac{-cos(3x)}{3} + C$

8 0

3 years ago

Help will brainlist and 50 points!

nataly862011 [7]

Answer:

$\frac{2}{x^{2}y^{2} }$

Step-by-step explanation:

4 0

3 years ago

Why is the side opposite the right angle in a right triangle will always be the longest side?

Pani-rosa [81]

The hypotenuses, is what I believe you're referring to.

The other two are at a 90 degree angle to each other. There is no side that is always adjacent, you just say adjacent if the side happens to be right next to an angle you are describing. Same with opposite, it is the one side that doesn't touch the angle you are describing.

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3 years ago

3 (1 - 2v) - V = -1 (3y + 1)

Dominik [7]

Answer: v = 3 /7 y + 4 /7

Step-by-step explanation:

Step 1: Add -3 to both sides.

−7v+3+−3=−3y−1+−3

−7v=−3y−4

Step 2: Divide both sides by -7.

−7v /−7 = −3y−4 /-7

v= 3 /7 y + 4 /7

4 0

3 years ago

Find 15 out of these numbers: 4,3,9,7 (You can use any symbol. meaning these: +, =, ×, ÷, BUT, you can not use the same number t

erastova [34]

Answer:

1×15

Step-by-step explanation:

it explains itself

4 0

3 years ago

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