Alice earned interest of $120 from my investment of $1000 for two years what is the rate of simple interest per year?

Mathematics

1 answer:

larisa86 [58]3 years ago

3 0

Answer:

The rate of interest was 6%.

Step-by-step explanation:

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Please help I will mark brainliest

Andreas93 [3]

is the same as picking from a points set hmmm, notice the table is an x,y table, so we can just pick any two points to get the slope and thereby the equation.

let's use (100, 36.5) and (300, 106.5)

$\bf (\stackrel{x_1}{100}~,~\stackrel{y_1}{36.5})\qquad (\stackrel{x_2}{300}~,~\stackrel{y_2}{106.5}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{106.5-36.5}{300-100}\implies \cfrac{70}{200}\implies \cfrac{7}{20} \\\\\\ \stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-36.5=\cfrac{7}{20}(x-100) \\\\\\ y-36.5=\cfrac{7}{20}x-35\implies y=\cfrac{7}{20}x+1.5$

and for this one let's pick say (35, 88) and (45, 82)

$\bf (\stackrel{x_1}{35}~,~\stackrel{y_1}{88})\qquad (\stackrel{x_2}{45}~,~\stackrel{y_2}{82}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{82-88}{45-35}\implies \cfrac{-6}{10}\implies -\cfrac{3}{5} \\\\\\ \stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-88=-\cfrac{3}{5}(x-35) \\\\\\ y-88=-\cfrac{3}{5}x+21\implies y=-\cfrac{3}{8}x+109$

5 0

3 years ago

Write a scenario about a bank account to represent the number sentence: -100 + 100 = 0.

Korvikt [17]

Answer:

So you have spent 100 hundred dollars at the mall and you have no money on your bank account so the bank wants you to return that money and so you did and now you are not in dept. to the bank

Step-by-step explanation:

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3 years ago

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Arada [10]

Answer:

1.8 in.

Step-by-step explanation:

Hi there!

1) Determine the radius of the base

$V=\frac{1}{3} \pi r^2h$ where r is the radius of the base and h is the height of the cone