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2 years ago

9

Lisa has 100 dollars in A savings account. The interest rate is 5% per year and is not compounded. How much interest will she ea

rn in four years?

2 answers:

den301095 [7]2 years ago

7 0

20 dollars, she will earn this because five percent of one hundred is five, times five by four and you get your answer of twenty!

grigory [225]2 years ago

4 0

She would have $20 after 4 years.

Work:

100 x 0.05(5%) = 5

4 x 5 = 20

Hope this helps!

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In 1985, there were 285 cell phone subscribers in Arlington. The number of subscribers increased by 75% per year since 1985. Fin

ANTONII [103]

Answer:

The number of subscribers in 2008 is 110,845,988

Step-by-step explanation:

The number of cell phone subscribers in Arlington, in t years after 1985, can be modeled by the following equation.

$N(t) = N(0)(1+r)^{t}$

And which N(0) is the number of subscribers in 1985 and r is the rate it increases per year, as a decimal.

In 1985, there were 285 cell phone subscribers in Arlington.

This means that $N(0) = 285$

The number of subscribers increased by 75% per year since 1985.

This means that $r = 0.75$

So

$N(t) = 285(1.75)^{t}$

Find the number of subscribers in 2008.

2008 is 2008-1985 = 23 years after 1985. So we have to find N(23).

$N(23) = 285(1.75)^{23} = 110,845,988$

The number of subscribers in 2008 is 110,845,988

8 0

2 years ago

What is an equation of the line that passes through the points

zubka84 [21]

Answer <u>(assuming it can be in slope-intercept form): </u>

y = x - 5

Step-by-step explanation:

1) First, find the slope of the equation. Use the slope formula, $m = \frac{y_2-y_1}{x_2-x_1}$ , and substitute the x and y values of the given points into it. Then, solve:

$m = \frac{(2)-(1)}{(7)-(6)} \\m = \frac{2-1}{7-6} \\m = \frac{1}{1} \\m = 1$

2) Now that we know the slope and at least one point the line crosses through, we can write an equation of the line in point-slope form, or $y-y_1 = m (x-x_1)$ . Substitute $m$ , $x_1$ , and $y_1$ for real values.

Since $m$ represents the slope, substitute 1 for it. Since $x_1$ and $y_1$ represent the x and y values of a point the line intersects, use any one of the given points (either one is fine, either way the equation will represent the same line) and substitute its x and y values into the equation. (I chose the point (6, 1), as seen below.) Finally, isolate y to put the equation in slope-intercept form.

$y-1 = 1(x-6)\\y -1 = x-6\\y = x -5$

6 0

2 years ago

A rectangle has a length of 11 inches and a width of 8.5 inches. This rectangle is dilated by a scale factor of 2.2 to create a

LuckyWell [14K]

Answer:

The dimensions of the new rectangle are $24.2\ in$ by $18.7\ in$

Step-by-step explanation:

we know that

The dimensions of the new rectangle will be equal to the dimensions of the original rectangle multiplied by the scale factor

In this problem we have that

the scale factor is equal to $2.2$

so

Find the new length L2

$L2=11*2.2=24.2\ in$

Find the new width W2

$W2=8.5*2.2=18.7\ in$

4 0

3 years ago

Read 2 more answers

A. Write as many ratios as you can using two side<br> lengths from ABC.

iragen [17]

Answer:

Ratio is 2:1

Step-by-step explanation:

The bigger triangle is ×2 bigger so ratios can be

2:1 , 4:2, 8:4 , 16:8 and so on

7 0

1 year ago

Consider the sequence of numbers 50, 48, 46, 44, using n to represent a position of a number in this sequence, write an expressi

goblinko [34]

The given sequence is

$50,48,46,44,....$

Here the first term, a is 50.

And the difference between two consecutive terms are

$48-50=46-48=44-46=-2$

So the difference is constant, which is -2. Therefore the sequence is arithmetic .

And the nth term of aritmnetic series is given by

$a_{n} = a+(n-1)d$

Substituting the values of a and d, we will get

$a_{n} = 50+(n-1)(-2)
\\
a_{n} = 50 -2n+2
\\
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7 0

3 years ago