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2 years ago

Solve the equation for the unkown variable 1) -1/x=-7/2+2/x

Mathematics

2 answers:

lakkis [162]2 years ago

6 0

Hope this might help

steposvetlana [31]2 years ago

6 0

Step-by-step explanation:

-1/x = -7/2 + 2/x

3/x = 7/2

Therefore x = 6/7.

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Solve for r<br><br>v = 4/3 r^3<br>

sergejj [24]

Answer:

$r=\sqrt[3]{\frac{3v}{4} }$

Step-by-step explanation:

To solve for $r$ :

$v=\frac{4}{3}r^{3}$ (given)

$\frac{3v}{4}=r^{3}$ (times $\frac{3}{4}$ on both sides)

$r=\sqrt[3]{\frac{3v}{4} }$

I hope this helps :)

8 0

3 years ago

If c(x)= 5/x-2 and d(x) = x + 3, what is the domain of (cd)(x)?

Nataly [62]

$(fg)(x)=f(x)\cdot g(x)\\\\\text{We have}\ c(x)=\dfrac{5}{x-2}\ \text{and}\ d(x)=x+3.\ \text{Substitute}\\\\(cd)(x)=\dfrac{5}{x-2}\cdot(x+3)=\dfrac{5(x+3)}{x-2}\\\\\text{Domain:}\\\\\text{The denominator must be different than zero. Therefore}\\\\x-2\neq0\to x\neq2\\\\Answer:\ \text{Domain is the set of all real numbers except 2}\to D=\mathbb{R}-\{2\}$

3 0

3 years ago

If a cat falls out of a tree, it has a probability of 0.92 that it will land

Alex_Xolod [135]

The probability that the cat lands on its feet both times it falls out of a tree is 0.85

<h3>How to determine the probability?</h3>

The probability that the cat lands on its feet is given as:

P(Feet) = 0.92

The probability that it lands on its feet twice is calculated using:

P = P(Feet) * P(Feet)

So, we have:

P = 0.92 * 0.92

Evaluate

P = 0.85

Hence, the probability is 0.85

Read more about probability at

brainly.com/question/251701

#SPJ1

3 0

1 year ago

In 2000, U.S. trade with Saudi Arabia totaled $20.6 billion. Of this total,

xxMikexx [17]

Answer:

30.1%

Step-by-step explanation:

Find the percent that was US exports by dividing 6.2 by 20.6, then multiplying it by 100

(6.2/20.6) x 100

= approximately 30.1

So, approximately 30.1% of the trade was US exports

8 0

3 years ago

Evaluate the expression for the given value of the variuble with step by step explanation

GaryK [48]

Substitute the value of b = -2 to the expression

$-4b-8+(-1)-b^2+2b^3=2b^3-b^2-4b-8-1=2b^3-b^2-4b-9\\\\2(-2)^3-(-2)^2-4(-2)-9=2(-8)-4+8-9=-16-4+8-9=-21$

7 0

3 years ago