Mathematics Middle School

Shelby deposited $1,000 in a savings account with simple interest. Two years later, she had earned $80 in interest. What was the interest rate?

pls explain in simple terms

Answers

Answer 1
Her interest was 12.5

You can divide 1000 by 80 and you’ll get the answer
Answer 2

Answer:

4 %

Step-by-step explanation:

simple take 80 times by 100 then divide by 1000 times by 2

Related Questions

The probability that Adrian has Mr. Muller as his science teacher next year is 0.25,
and the probability that he has Mrs. Waugh as his math teacher next year is 0.5.
He wants to determine the probability that he has both Mr. Muller and Mrs. Waugh as teachers next year and needs to design a simulation to help him calculate this probability. He has the spinner shown below and a number cube.

Which of the following simulations could Adrian use to help him determine the probability that he has both Mr. Muller and Mrs. Waugh as teachers next year?
Responses

getting a 1 on the spinner and rolling a number greater than 4
on the number cube
getting a 2 on the spinner and rolling an odd number on the number cube

getting a 3 on the spinner and rolling an even number on the number cube

getting a 2 on the spinner and rolling a prime number on the number cube

Answers

Answer:

the answer would be spinning a 3 and getting an even number on the number cube. read why below!

Step-by-step explanation:

because the spinner presents three options (two 2s, a 3 and a 1), there is a 50% chance that he will spin a 2. the spinner has to be able to represent his chances of having mr. muller as his science teacher though, because there is only a 25% chance that he will spin a 1 or a 3.

the number cube might be difficult to understand, but because there are 3 even numbers and 3 odd numbers, the chances of rolling an even or an odd number are equal: 50/50 chance, which represents his chances of having mrs. waugh as a teacher.

i hope that this helped!

Answer:

the answer would be spinning a 3 and getting an even number on the number cube. read why below!

Step-by-step explanation:

the guy is right

(ANswer quickly please!) giving brainliest !!!

Last summer, a sports club had 380 members. This summer, due to some renovations, it has 30% more members. How many members are there now?

Answers

Answer:

494

Step-by-step explanation:

380 * 1.3 = 494

494 because 30% of 380 is 114 and 380+114=494

Explain the cosine rule and sine rule while also saying how to use it and provide examples (keep it in simple terms)

Answers

Answer:

Sure, I'll explain the cosine rule and sine rule in simple terms:

The cosine rule (also known as the law of cosines) is used to find the length of a side or the measure of an angle in a triangle given the lengths of the other sides and the angle between those sides. It states that c^2 = a^2 + b^2 - 2ab cos(C), where c is the length of the side opposite angle C, and a and b are the lengths of the other two sides.

Here's an example of how to use the cosine

Suppose we have a triangle with sides a=6, b=8, and an angle between them c=45 degrees. We want to find the length of the remaining side of the triangle, side a.

Using the cosine rule:

a^2 = b^2 + c^2 - 2bc * cosA

where A is the angle opposite side a, we can plug in our values and solve for a:

a^2 = 8^2 + 6^2 - 2(8)(6) * cos(45)

a^2 = 64 + 36 - 96 * 0.707

a^2 = 10.56

a = sqrt(10.56)

a = 3.25 (rounded to two decimal places)

Therefore, the length of side a is approximately 3.25 units.

Answer:

Step-by-step explanation:

Tom and Katherine live in different towns which are linked by a bike trail. They agree to meet for a bike ride, and both set off from home at the same time. Tom rides north at a speed of 14 mph and Katherine rides south at 10 mph. The bike trail between their homes is 42 miles long. How long will it be before they meet?

Answers

Answer:

We can start by using the formula:

time = distance / speed

Let t be the time (in hours) for Tom and Katherine to meet.

Tom's distance = Tom's speed x time = 14t

Katherine's distance = Katherine's speed x time = 10t

Since they are riding towards each other, the total distance they cover is the sum of their distances:

Tom's distance + Katherine's distance = 42 miles

14t + 10t = 42

Simplifying:

24t = 42

t = 42 / 24

t = 1.75 hours

Therefore, Tom and Katherine will meet after 1.75 hours of riding.

They will meet in 1.75 hours

Everybody here has one thing in common. what is it?

Answers

Answer: Everyone here most likely sucks at math

Step-by-step explanation:

Brainly gives you answers

We are all lost and confused

Domingo and Bethany drove along the same highway, in opposite directions. Domingo left at 1 p.m., traveling westbound at 55 mph. Bethany left at the same time, traveling eastbound at 60 mph. Domingo and Bethany were 575 miles apart when they started driving. At what time did they pass each other?

Answers

Step-by-step explanation:

Let's first figure out how far each of them traveled before they meet. Let TIME be the time in hours since they began traveling.

Domingo traveled a distance of 55 * TIME miles

Bethany traveled a distance of 60 * TIME miles

We know that their total distance is 575 miles. So we can write the equation:

55 * TIME + 60 * TIME = 575

Simplifying this equation, we get:

115 * TIME = 575

Dividing both sides by 115, we get:

TIME = 5

So they meet 5 hours after they began traveling. Since Domingo left at 1 p.m., he will meet Bethany at 6 p.m.

They will pass each other at 6 pm.

Given,

Domingo and Bethany drove along the same highway but in opposite direction.

Let's first figure out how far each of them traveled before they meet.

Let x be the time in hours since they began traveling.

Domingo traveled a distance of 55 * x miles

Bethany traveled a distance of 60 * x miles

We know that their total distance is 575 miles. So we can write the equation as,

55 * x + 60 * x = 575

Further simplifying this equation, we get:

115 * x = 575

x = 5

So they meet 5 hours after they began traveling.

Since Domingo left at 1 p.m., he will meet Bethany at 6 p.m.

Learn more about speed, distance, time,

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pls help me with this question

Answers

Answer: Its C

Step-by-step explanation: I took the test on Edge.

The answer:
C. 250.8 m^2

Write the coordinates of the vertices after a rotation 180° counterclockwise around the origin.

Answers

Answer: swap u and v I don't think w will change

Step-by-step explanation:

-

Well if it’s going 180 degrees, then it’s gonna be in Q1. Therefore the numbers would be in the positive, positive section. So U -8 = U’ +8, V = V’ +6 and W = W’ +6. That goes to show that 180 degrees will have the same coordinates.

∠A and ∠B are supplementary angles. If m∠A = (3x+1)∘ and m∠B = (x-9)∘, then find the measure of ∠B.

Answers

Answer:

X= 45

Step-by-step explanation:

So you do

3x+1+x-9=180

Because  supplementary angles are 180°

Then

3x+x = 4x

1 - 9 = -10

4x-10=180

4x-10+(10)=180+(10)

4x=190  

x=45

Answer:

Step-by-step explanation:

Please hurry i need to bring my grade up before friday

Answers

Answer:

Step-by-step explanation:

1+1 is about 3 so 3

Y=7/4x and I don’t know the y intercept

PLEASE HELP!! ???? DONT KNOW THIS

Answers

Answer:

Here's the solution I created on Overleaf:

The answer is 29 I believe!

HELPP QUICK PLS! (50 points and BRAINLY IF ANSWERED CORRECTLY; both; WITH WORK!!!) Silly answers will be reported!

Answers

Answer:

Area of triangle:

(b*h)/2

(16.8 * 14.6)/2 =

122.64m^2

Area of trapezoid:

(a+b)/2*h

(6.7 + 13.6)/2 * 12 =

121.8m^2

Answer: Area of triangle:(b*h)/2(16.8 * 14.6)/2 = 122.64m^2Area of trapezoid:(a+b)/2*h (6.7 + 13.6)/2 * 12 =121.8m^2

Step-by-step explanation:

please help i need this bad

Answers

Answer:

?

Step-by-step explanation:

(answer needs to be at least 20 words long)

2) 3 (2.999)
3) 3 (2.958)
4) 2.86 ( 2.815)
5) 2.95 ( 2.949)
6) 3.14 (3.144)
7) 2.84 ( 2.841)

Write the coordinates of the vertices after a rotation 180° counterclockwise around the origin.

Answers

Answer: U'=8,5  V'=7,5  W'=6,10

Step-by-step explanation:

The Answer is U=8,5 V=7,5 W=6,10

What’s j+12=25 tape diagram

Answers

well you would take 25 and take 12 away. like this: 25-12=? so 25-12 would be 13. therefore j=13!
What is an Equation?

An equation is a mathematical statement that shows two mathematical expressions equal.

An equation consists a variable that does not have a fixed value to it.


Given,

j+12=25

Here ‘j’ is the variable.

To find ‘j’ we just need to 12 from 25.

So, 25 - 12 = 13

Hence, now we know that ‘j’ is equal to 13.


Proof :

13 + 12 = 25



Learn more about Equations here

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