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3 years ago

Solve for 3t-t-6=t-7

Mathematics

2 answers:

Ulleksa [173]3 years ago

5 0

Answer:

Step-by-step explanation:

Replace all occurrences of

−

with a single

−

. A plus sign followed by a minus sign has the same mathematical meaning as a single minus sign because

⋅

−

Subtract

from

−

Move all terms containing

to the left side of the equation.

Tap for more steps...

−

Move all terms not containing

to the right side of the equation.

Tap for more steps...

−

Divide each term by

−

and simplify.

Tap for more steps...

stealth61 [152]3 years ago

3 0

Answer:

t = - 1/3

Step-by-step explanation:

3t - t - 6 = t - 7

3t - t + t = 6 - 7

3t = - 1

t = - 1/3

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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:

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

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3 years ago