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2 years ago

Solve for x. NEED HELP

Mathematics

1 answer:

TiliK225 [7]2 years ago

7 0

Answer:

22.470

Step-by-step explanation:

In this example you have to use the trigonometric function sine which is defined as $sin(\theta) = \frac{opposite}{hypotenuse}$

Plug in known values:

$sin(64) = \frac{x}{25}$

Multiply both sides by 25

$sin(64) * 25 = x$

Approximate sin(64) using a calculator:

$0.89879 * 25 = x$

Simplify

$22.470 \approx x$

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7.5% of what number is equal to 85% of 200?

Ksivusya [100]

Solving:

$\frac{7.5}{100} *x = \frac{85}{100} * 200$

$\frac{7.5x}{\diagup\!\!\!\!\!\!\!\!100} = \frac{17000}{\diagup\!\!\!\!\!\!\!\!100}$
$7.5x = 17000$
$x = \frac{17000}{7.5}$
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4 years ago

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2=ln(x+7) solve for x

maria [59]

Answer:

e^2 -7 = x

Step-by-step explanation:

2=ln(x+7)

Raise each side to the base of e

e^2 = e^ln (x+7)

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e^2 = x+7

Subtract 7 from each side

e^2 -7 = x +7-7

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3 years ago

Establish for which constants c the following function is a density.

Valentin [98]

By "density" I assume you mean "probability density function". For this to be the case for $f(x)$ , we require

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Since

$f(x)=\begin{cases}cx^{1/2}&\text{for }0$

you have

$\displaystyle\int_{-\infty}^\infty f(x)\,\mathrm dx=\int_0^2cx^{1/2}\,\mathrm dx=\dfrac{2c}3x^{3/2}\bigg|_{x=0}^{x=2}=\dfrac{2^{5/2}c}3=1$

which means

$c=\dfrac3{2^{5/2}}=\dfrac3{4\sqrt2}$

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3 years ago

Find the distance between (4,3) and (0,3). A) 10 B) 2 C) 2 13 D) 4

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Answer:

Step-by-step explanation:

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3 years ago

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Mnenie [13.5K]

Answer:

5 tables

Step-by-step explanation:

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Hope this helps!

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3 years ago

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