MATHEMATICS MIDDLE SCHOOL

You borrow $18,000 to buy a new car. You will pay $3,240 in simple interest at the end of 6 years. What is the annual interest rate on your purchase?.

Answers

Answer 1
Answer:

Answer:

Annual Interest Rate on purchase is 3 %.

Step-by-step explanation:

Principal, P = $ 18000

Simple Interest , SI = $ 3240

Time , T = 6 years

Let R be the interest rate.

Using Simple interest formula we get,

SI=(P* R* T)/(100)

3240=(18000* R*6)/(100)

3240=1080* R

R=(3240)/(1080)

R=3

Therefore, Annual Interest Rate on purchase is 3 %.
Answer 2
Answer: Simple Interest, I = PRT/100

3240 = 18 000 * R * 6 /100

3240 = 180*R*6

3240 / (180*6) = R          Use your calculator

3 = R

The annual interest rate is 3%.

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PLEASEHELP!!!!!!!!!!Write an expression to describe a rule of the sequence. Then find the 100th term in the sequence.4, 9, 14, 19, 24, 29..... A)4+5n;504 B)5n-1; 499 C) 5n; 500 D) 4n+5; 405
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If two squirrels live in one square meter of a fifty square meter park what is the park's estimated squirrel population?

Answers

Well let's find our key words : There are two squirrels that live in one square meter in a park and there are fifty square meters in total. That means multiply : 50•2. I do that because there are 50 square meters and two squirrels per meter. 50•2=100. The total parks estimated squirrel population is 100. :) Hoped I helped! 
2 x 50 = 100
es. the population is 100 in the park

a rhombus can be cut in half by a diagonal to make two isosceles triangle correct or incorrect if incorrect give an example to support why

Answers

The definition of a rhombus is that it's a polygon with four congruent sides. If you split one into two pieces with a diagonal, then yes, it will be two isosceles triangles because two sides are congruent.

HElp me with this one but not with a big processs justa little one 8. Think of another quadratic equation that has two (2) real number solutions. Write the
equation in ax^2 + bx + c = 0 form. Then find the value of the discriminant to support your
answer.
9. Think of another quadratic equation that has one (1) real number solution. Write the
equation in ax^2 + bx + c = 0 form. Then find the value of the discriminant to support your
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10. Think of another quadratic equation that has no (0) real number solutions. Write the
equation in ax^2 + bx + c = 0 form. Then find the value of the discriminant to support your
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Answers

so 2 real solutions
just write 2 factors and expand
(x-3)(x-4)=0
x^2-7x+12=0
discriminant is when you have b^2-4ac
so subsitute
ax^2+bx+c=0
a=1
b=-7
c=12
-7^2-4(1)(12)
49-48=1
discriminant=1


one real solution would be
(x-1)(x-1)=0
x^2-2x+1=0
discriminant=-2^2-4(1)(1)=4-4=0
discriminant=0

no real solutions has the discriminant less than zero
let's say that b=1 and c=20 and a=1
basically, we need a set of numbers where b^2 is less than 4acso

1^2-4(1)(20)=1-80=-79
then we subsitute
x^2+x+20=0

At the movies, Liz eats 1/4 of a box of popcorn. Her friend Kyra eats 2 times a small much as Lizard eats. How much of a box of popcorn does Kyra eat?

Answers

Kyra ate 1/4 of the box of popcorn because 2 x 1/4 = 2/4 or 1/2. Hope this helps
Kura ate 2/4 or 1/2 of the popcorn because 2 times 1/4 is 2/4

A flowerbed surrounds the base of a tree. It’s enclosed by stones to form a circle that measures 25.12 feet. What is the radius of the circle?

Answers

2.83 if rounded. 2.82842712475 would be the actual.

Hope this helped!

A student saves $20 per week from his part-time job. How much will he have saved in 21 weeks?

Answers

Answer:

$420

Step-by-step explanation:

Given that the students save$20 every week this can be written as;

1 week= $20 saved

For 21 weeks, you perform multiplication

1w=$20

21weeks=?------------perform cross multiplication

21*20=$420

Answer: \$420

Step-by-step explanation:

You need to analize the information provided.

The amount of money the student saves in 1 week is: $20

You need to calculate the amount of money the student will have saved in 21 weeks.

 Therefore, in order to solve the exercise, you need to multiply the amount of money the student saves in 1 week by 21. The product obtained will be the amount of money the student will have saved in 21 weeks.

Then, you get:

\$20*21=\$420
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