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4 years ago

An account earns simple interest. Find the annual interest rate.

Mathematics

1 answer:

strojnjashka [21]4 years ago

4 0

Answer:

4% = r

Step-by-step explanation:

I = PRT

where I is the interest, P is the principle R is the rate, T is the time

30 = 250 *r* 3

30 = 750r

Divide each side by 750

30/750 = 750r/750

.04 = r

Changing to percent form

4% = r

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A right triangle has one leg with a length of 48 and a hypotenuse with a length of 80 what is the length of the other leg

Reptile [31]

A^2+b^2= c^2

48^2+b^2= 80^2

2304+b^2= 6400

Subtract 2304 from both sides.

b^2= 4096

Find the square root.

b= 64

I hope this helps!
~kaikers

7 0

3 years ago

Find the inverse of the function y = 2x2 + 2.

Blababa [14]

Answer:

y = √(x - 2) / 2

Step-by-step explanation:

y = 2x^2 + 2.....switch ur x and y and solve for y

x = 2y^2 + 2

x - 2 = 2y^2 ...divide both sides by 2

(x - 2) / 2 = y^2...now take the sqrt of both sides, eliminating the ^2

(√ (x - 2) / 2) = y

3 0

3 years ago

Read 2 more answers

7+(?-6) x 3=22 any one know this question if so please help

Mazyrski [523]

Answer:

x=11

Step-by-step explanation:

You first subtract 7 from both sides in which you get 15.

$(x - 6) \times 3 = 15$

you then divide by 3 on both sides and you get 5.

$(x - 6) = 5$

you can then add 6 on to 5 and get

$x = 11$

hope this helps ^.^

3 0

3 years ago

MATH HELP PLEASE WILL GIVE BRAINLIEST

Anni [7]

1. 10
2. 5√2 in
1. The ratio for a 30-60-90 triangle is x:x√3:2x
x is the shortest leg so 2*x =2*5 = 10
2. the ratio of a 45-45-90 triangle is x:x:x√2
x is one leg so x * √2 = 5*√2 = 5√2

8 0

4 years ago

The pound has three kinds of dogs: pit bull, chihuahuas and mutts. All but 23 of the dogs are pit bull, all but 17 are chihuahua

Georgia [21]

Answer:

There are 68 dogs in the pound.

Step-by-step explanation:

Number of pit bull dogs in a pound = P = 23

Number of chihuahuas dogs in a pound = C = 17

Number of mutts dogs in a pound = M = 28

Total number of dogs in a pound = T

$T = P+C+M=23+17+28=68$

There are 68 dogs in the pound.

5 0

3 years ago