How do you multiply -.03 x 233%

Mathematics

1 answer:

kvv77 [185]4 years ago

3 0

I say, change 233% into a decimal which would be 2.33 and then multiply from there. Which would be -0.0699

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How much should you invest at 5% simple interest in order to earn $100 interest in 12 months?

marissa [1.9K]

Answer:

You should invest $2000 at 5% simple interest in order to earn $100 interest in 12 months.

Step-by-step explanation:

Using the formula

$I = Prt$

where

I = Interest earned

P = The principal (let say in $)

r = The Interest Rate

t = time

Given that

I = $100

r = 5%

t = 12 month = 1 year

P = The principal amount needed to invest (let say in $)

Thus,

$I = Prt$

100 = P × 5% × 1

100 = P × 5/100 × 1

100 × 100 = P × 5

10000 = P × 5

P = 10000/5

= 2000 (let say in $)

Thus, you should invest $2000 at 5% simple interest in order to earn $100 interest in 12 months.

7 0

3 years ago

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krok68 [10]

To answer this question you have to create a system of equations. The first equation will be that Devi's money (x) equals her brother's money (y), or x = y. The next equation would be that (3/5)x + (7/10)y = 78. You than can substitute x in for y because x = y. The equation would know be (3/5)x + (7/10)x = 78. You then combine the like terms to create an equation of (13/10)x = 78. Then, multiply both sides by 10 / 13 in order to isolate x. This will create the equation x = 60. This means that Devi and her brother each had 60 dollars. You then find out how much they spent and add it together. You can do so with the equation (2/5)x + (3/10)y = z, with z being total money spent. You substitute 60 in for x and for y then solve. When you solve you see that 24 + 18 = z, or that z equals 42. In other words, they spent 42 dollars altogether.

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4 years ago

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Dafna1 [17]

Answer:

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Step-by-step explanation:

* Lets explain how to solve the problem

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equal coordinates

- Ex: point (4 , 4) is the same distance from the x-axis and the y-axis

because the distance from the x-axis to the point is 4 (y-coordinate)