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3 years ago

2. 1. Calculate the interest if the principal is $300, the interest rate is 7% and the time is 2 years.

Mathematics

1 answer:

Andreas93 [3]3 years ago

4 0

Answer:

$42

Step-by-step explanation:

Given

Principal (P) = $300

rate of interest (R) = 7%

Time (7T) = 2 years

Interest (I) = ?

We know

I = PTR / 100

= 300 * 7 * 2 / 100

= $ 42

Hope it will help :)❤

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allochka39001 [22]

Answer:

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Step-by-step explanation:

Let the price of 111 apples be $x and the price of 111 oranges be $y.

1. 111 apples and 111 oranges cost $5.30, thus

x+y=5.30

2. 111 apples and 222 oranges cost $7.30, then

x+2y=7.30

Subtract the first equation from the second:

x+2y-x-y=7.30-5.30

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Furkat [3]

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The price fell 40%

Step-by-step explanation:

34/85, then convert it to a percentage

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3 years ago

An archaeologist in turkey discovers a spear head that contains 32% of its original amount of c-14

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Answer:

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2 years ago

PLEASE ANSWER AS SOON AS POSSIBLE WILL GIVE "Brainliest" TO THE FIRST CORRECT PERSON!!!

saw5 [17]

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Step-by-step explanation:

You can write two expressions that are in terms of 'x' and 'y'. This is a right triangle, so Pythagorean's theorem can be used. We can also use the angle to find the sine of 30 degrees.

Pythagorean's Theorem:

The values 'a' and 'b' are the two shorter sides of the triangle, while the value 'c' is the longest side of the triangle; the hypotenuse.

$a^2+b^2=c^2$

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Sine of the Angle:

Sine is defined to be the opposite side divided by the hypotenuse. Let's take the sine of 30 degrees:

$sin(\alpha )=opposite/hypotenuse$

$sin(30)=y/12\sqrt{3}$

$\frac{1}{2} =y/12\sqrt{3}$

$y=6\sqrt{3}$

Plug this value of 'y' into the first expression derived from Pythagorean's theorem:

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Use this value of 'x' to solve for 'y' in the expression from Pythagorean's theorem:

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I hope this helps ^W^ have a great day!

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