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aniked [119]
3 years ago
6

I = prt

Mathematics
1 answer:
hodyreva [135]3 years ago
7 0

Answer:

The amount  we need to invest is 500 muggle money.

Step-by-step explanation:

Amount needle to study at Hogwarts = A = 800 muggle money

Principle amount that we need to invest = P

Duration of investment = T = 5 years

Rate if simple interest = R = 12%

Simple interest =  S.I

A = S.I + P

800=\frac{P\times 12\times 5}{100}+P

800=0.6P+P

800=1.6P

P = \frac{800}{1.6}=500

The amount  we need to invest is 500 muggle money.

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Carl is seventy-three inches tall. This is twenty-one inches less than two times Marcia's height. How tall is Marcia?
sleet_krkn [62]

Answer:

Marcia is 47 inches tall.

Step-by-step explanation:

Let's solve this step by step and try to visualize the situation.

• Carl: 73 inches tall

The second part of the question states that Carl's heigh is twenty-one inches less than two times Marcia's height. Add 73 + 21 to equal 94. Since Carl is 21 inches less that means that Maria is 21 inches more ( so that's why I added instead of subtracting) because we are trying to find Maria's equation.

Let x be Marcia's height

2x = 94

• The question staes that 73 is 21 inches less than two times Marcia's height which means that the equation 2x = 94 applies because 73 + 21 = 94

After simplifying the equation, we can get the answer that Marcia is 47 inches tall.

8 0
2 years ago
Read 2 more answers
Find the volume of the right triangular prism.
dolphi86 [110]
A)120 cubic centimeters :)
6 0
3 years ago
Gina works at a diner. She earns $6 each hour plus tips.In one week,she worked 37 hours a week and earned $43 in tips.How much d
oksian1 [2.3K]
The answer is $265 (how much did she make altogether)

The equation is x=6h+6


5 0
3 years ago
Instructions: Use the ratio of a 30-60-90 triangle to solve for the variables. Leave your answers as radicals in simplest form.
wel

Answer:

n=42, m=42\sqrt{3}

Step-by-step explanation:

The side opposite the 30° angle is half the size of the hypotenuse. So, 84/2=42. Now, the side opposite the 60° angle is shown as 84/2 · \sqrt{3}, which is the same as 42√3.

6 0
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The radius of a circle is 1 kilometer. What is the area?Give the exact answer in simplest form.____ square kilometers
choli [55]

Ok, so;

Let me draw the figure here below:

We know that the area of a circle can be found using the next equation:

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Where r is the radius and π is a number.

So, the area of this circle, will be:

Area = π(1km)²

Area = π km²

7 0
1 year ago
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