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3 years ago

Which equation can be rewritten as x + 4=x2 assume x>0

Mathematics

1 answer:

antoniya [11.8K]3 years ago

5 0

I'm guessing that x2 is an x to the power of 2, so u can rewrite that as:

x^2 - x - 4

from there you can use completing the square, quadratic function, or factoring.

If the x2 is supposed to be 2x then it would just be as follows:

x - 4

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The pipe fitting industry had 546.5 thousand jobs in 2015 and is expected to decline at an average rate of 3 thousand jobs per y

lesya692 [45]

Answer:

The amount of jobs from fitting industry shall decline in 5.5 percent from 2015 to 2025.

Step-by-step explanation:

Due to the assumption of a yearly average rate, a linear function model shall be used. The expected amount of jobs ( $n$ ) after a certain amount of years (t) is given by the following formula:

$n = n_{o} + \frac{\Delta n}{\Delta t}\cdot t$

Where:

$n_{o}$ - Initial amount of jobs in pipe fitting industry, measured in thousands.

$\frac{\Delta n}{\Delta t}$ - Average yearly rate, measured in thousands per year. (A decline is indicated by a negative sign)

If $n_{o} = 546.5$ , $t = 2025-2015 = 10\,years$ and $\frac{\Delta n}{\Delta t} = -3\,\frac{1}{years}$ , then:

$n = 546.5+\left(-3\,\frac{1}{year}\right)\cdot (10\,years)$

$n = 516.5$

The percent change in jobs from pipe fitting industry is calculated as follows:

$\%n = \left(1-\frac{n}{n_{o}}\right)\times 100\,\%$

$\% n = \left(1-\frac{516.5}{546.5}\right)\times 100\,\%$

$\%n = 5.5\,\%$

The amount of jobs from fitting industry shall decline in 5.5 percent from 2015 to 2025.

4 0

3 years ago

Which number(s) below belong to the solution set of the inequality? Check all that apply.

mojhsa [17]

Okay seems like you need to find the numbers that are greater than 51

so it says solution set

x + 16 > 51
plug some numbers

so
45 + 16 > 51
61 > 51
so keep adding numbers to find a solution that is bigger than 51

5 0

3 years ago

Read 2 more answers

What is the area of A is 7.7ft and B is 5.2ft and C is 9.29 and this is a triangle

klasskru [66]

First find half of the perimeter of the triangle: s = (a + b + c) / 2 = 11.095

Then the area is:

A = Square Root [11.095 (11.095 - 7.7)(11.095 - 5.2)(11.095 - 9.29)] = 20.01999895 or 20.02 square feet rounded to 2 decimal places.

8 0

4 years ago

One beaver can chew through a tree that is 15 cm thick and 20 minutes if it works the same paste how long will it take one beave

siniylev [52]

Answer is 67 or 44 or 4444444

4 0

3 years ago

What is <br> -5/4 simplified

lilavasa [31]

Answer:

-1 1/4

Step-by-step explanation:

If the numerator is greater than or equal to the denominator of a fraction, then it is called an improper fraction. In that case, you could convert it into a whole number or mixed number fraction.

5/4 = 1 1/4

8 0

3 years ago