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3 years ago

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

Mathematics

1 answer:

strojnjashka [21]3 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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Your friend takes a job cleaning up a neighbors yard and mowing the grass, and asks you and two other friends to help. Your frie

nadezda [96]

Answer:

$100

Step-by-step explanation:

when you read the context you have your friend which is (1), than she asks (You (1) and (Two (2) other friends to help.

Add

Friend + You + Two other friends= 4

Now Divide 100/4= 25

hope this helps

3 0

2 years ago

the table shows the number of cars washed and the amount earned by the car wash over several days. circle the number or term tha

TEA [102]

The first 3 rows are proportional

because when you divide the earning by car washed they all have the same unit rate of 9.5/ to answer the second part you multiply 9.5 by 88. you'll get $836

5 0

2 years ago

Read 2 more answers

Solve the following proportion for v. <br>8/5 = v/6 <br>Round your answer to the nearest tenth.

bekas [8.4K]

Answer:

$v=\frac{48}{5}=9\frac{3}{5} \\$

Step-by-step explanation:

$\frac{8}{5}=\frac{v}{6}$

Swap sides:

$\frac{v}{6}=\frac{8}{5}$

Multiply to both sides by 6:

$\frac{v}{6}\cdot6=\frac{8}{5}\cdot6$

Group like terms:

$\frac{1}{6}\cdot6v=\frac{8}{5}\cdot6$

Simplify the fraction:

$v=\frac{8}{5}\cdot6$

Multiply the fractions

$v=\frac{8\cdot6}{5}$

Simplify the arithmetic:

$v=\frac{48}{5}$

4 0

2 years ago

Which system of equations is represented by the matrix below

malfutka [58]

Answer:

Option A.

Step-by-step explanation:

The given matrix is

$\left[\left.\begin{matrix}4 & 5\\ 7 & -4\end{matrix}\right|\begin{matrix}-16\\ 23\end{matrix}\right]$

We need to find the system of equations which is represented by the matrix.

In the given matrix first row represents the first equation and second row represents the second equation of the system of equations.

Let two variables are x and y.

First column represents the coefficients of x and second column represents the coefficients of y.

Numbers on the right side of the matrix represents the numbers which are right side of the equations.

Now, the required equations are

$4x+5y=-16$

$7x-4y=23$

Therefore, the correct option is A.

4 0

2 years ago

Use a net to find the surface area of the prism.

BartSMP [9]

Surface Area= Length × hypotenuse+ length × width+2(1/2 base × height)+Lenght×base

Surface Area= 19×25+19×7+24×7+19×24

SA=1232 m²

8 0

2 years ago