4 years ago

Solving systems by matrix

Mathematics

1 answer:

ElenaW [278]4 years ago

3 0

There are several ways. A very good way is gaussian elimination.

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The population of Hannah’s town increased from 1,500 to 2,600 in five years. At what rate is the population increasing?

puteri [66]

The population is increasing at the rate of 220

Explanation:

Given that the population of Hannah's town is increased from 1500 to 2600 in five years.

This can be written in expression as

$f(0)=1500$ and

$f(5)=2600$

We need to determine the rate of change of population.

The rate of change can be determined using the formula,

$\frac{f(b)-f(a)}{b-a}$

where $a=0$ and $b=5$

Substituting the values in the formula, we have,

$\frac{2600-1500}{5-0}$

Simplifying, we have,

$\frac{1100}{5}$

Dividing, we get,

220

Thus, the population is increasing at the rate of 220

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A package of nails costs $5

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3 years ago

(a^2-ax+bx-ab)/(a^2+ax-bx-ab)*(a^2+ax+ab+bx)/(a^2-ax-ab+bx)

Vanyuwa [196]

$\frac{a^2-ax+bx-ab}{a^2+ax-bx-ab} \cdot \frac{a^2+ax+ab+bx}{a^2-ax-ab+bx} = \frac{1}{a(a+x)-b(x+a)} \cdot (a(a+x)+b(a+x)) = \frac{1}{a-b} \cdot (a+b) = \frac{a+b}{a-b}.$

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Solve for x if 2(1+3x) =3

Archy [21]

Answer:

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Step-by-step explanation:

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Marc loves sweet potato fries. For every 18 sweet potato fries he eats, he uses 2 ketchup packets. One day, Marc ate 108 sweet p

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Step-by-step explanation:

You divided 108 by 19 than multiply by 2

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3 years ago