2 years ago

Charlotte has 12 t shirts.one fourth of her t shirts are green. How many of charlottes t shirts are green?

Mathematics

2 answers:

ella [17]2 years ago

7 0

3 T shirts. 12 divided by 4.

Serjik [45]2 years ago

5 0

3 because 12~1/4=3 and if u make the 1/4 a decimal you'll get the same thing

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Kayla went shopping for a new pair of sneakers. The listed price of the pair of sneakers was $20, but the price with tax came to

Nina [5.8K]

Hello!

$\large\boxed{9 \%}$

To find the percent tax, use the equation:

$\text{ \% tax} = \frac{\text{ price after - initial price}}{\text{initial price}}$

Substitute in the given values:

$\text{ \% tax} = \frac{\text{ 21.80 - 20}}{\text{20}} \\\\\text{ \% tax} = \frac{1.80}{20} = 0.09$

Multiply by 100 to find the percent tax:

$0.09 * 100 = 9\%$

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2 years ago

If f'(0) = 5 and F(x) = f(3x), what is F'(0)?

Llana [10]

Answer:

$\displaystyle F'(0) = 15$

Step-by-step explanation:

We are given that:

$f'(0) = 5 \text{ and } F(x) = f(3x)$

And we want to find F'(0).

First, find F(x):

$\displaystyle F'(x) = \frac{d}{dx}\left[ f(3x)]$

From the chain rule:

$\displaystyle \begin{aligned} F'(x) &= f'(3x) \cdot \frac{d}{dx} \left[ 3x\right] \\ \\ &= 3f'(3x)\end{aligned}$

Then:

$\displaystyle \begin{aligned} F'(0) & = 3f'(3(0)) \\ \\ & = 3f'(0) \\ \\ & = 3(5) \\ \\ & = 15\end{aligned}$

In conclusion, F'(0) = 15.

7 0

1 year ago

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If y varies directly as x and y=3 when x=10, find x when y=8 Please, somebody, I need help

Kryger [21]

Answer:

26.6

Step-by-step explanation

3=10*k

3/10=.3

y=8

8=.3*x

8/.3=26.6

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2 years ago

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Yuliya22 [10]

The answer is 64, happy to help!

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2 years ago

Twice a number is equal to negative four. Which equation could be used to find the number? 2n = 4 2n = -4n 2n - 4 2n = -4

Pepsi [2]

Twice a number is equal to negative four :
2n = -4

answer
2n = -4
last one is your answer

4 0

2 years ago

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