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3 years ago

Ok, do this =have 25 points

Mathematics

1 answer:

Irina-Kira [14]3 years ago

5 0

Answer:

Interest: 3.25%

$ Amount after 3 Years: $1,317.00

Step-by-step explanation:

If Robert invest 1200 dollars in the CD for a period of 3 years, he will earn 3.25% annual interest.

First, converting R percent to r a decimal

r = R/100 = 3.25%/100 = 0.0325 per year.

Solving our equation:

A = 1200(1 + (0.0325 × 3)) = 1317

A = $1,317.00

The total amount accrued, principal plus interest, from simple interest on a principal of $1,200.00 at a rate of 3.25% per year for 3 years is $1,317.00.

I hope this helps. If you have any more questions, please feel free to post them and someone will be able to help you, whether it's myself or others. Please leave a like, rating, and if possible, Brainliest. Have a great day!

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18 = 3(3x – 6) Step by step

butalik [34]

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After that your equation is 18=9x-18
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Then devide each side by 9 so the answer will be x=4

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4 years ago

4. Use the graph for the following: Please answer Picture is included

sergiy2304 [10]

Answer:

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(b) -2

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1 year ago

The length of a rectangle is 5 ft less than three times the width, and the area of the rectangle is 50 ft². Find the dimensions

Mariulka [41]

Answer

Length = 10 ft

Width = 5 ft

Explanation

Area of the rectangle given = 50 ft²

Let the width of the rectangle be x

So this means the length of the rectangle will be 3x - 5

What to find:

The dimensions of the rectangle.

Step-by-step solution:

Area of a rectangle = length x width

i.e A = L x W

Put A = 50, L = 3x - 5, W = x into the formula.

$\begin{gathered} 50=(3x-5)x \\ 50=3x^2-5x \\ 3x^2-5x-50=0 \end{gathered}$

The quadratic equation can now be solve using factorization method:

$\begin{gathered} 3x^2-5x-50=0 \\ 3x^2-15x+10x-50=0 \\ 3x(x-5)+10(x-5)=0 \\ (3x+10)(x-5)=0 \\ 3x+10=0\text{ }or\text{ }x-5=0 \\ 3x=-10\text{ }or\text{ }x=5 \\ x=-\frac{10}{3}\text{ }or\text{ }x=5 \end{gathered}$

Since the dimension can not be negative, hence the value of x will be = 5.

Therefore, the dimensions of the rectangle will be: