MATHEMATICS MIDDLE SCHOOL

A sweater is on sale for 20% off the regular price. The sale price is $60. What is the regular price of the sweater?

Answers

Answer 1
Answer: 100-20=80%
percent means parst out of 100
80%=80/100=8/10=4/5

60=80% of original
60=4/5 of original
times both sides by 5/4
300/4=original
75=original

regular price is $75
Answer 2
Answer: 20% of 300 is 60.. But I might be wrong

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HIGH SCHOOL

There are an infinite number of points that lie on a period at the end of a sentence. True or False

Answers

I say it is true not false.
HIGH SCHOOL

1. Julia deposited $250 in a savings account that earns 2.7% simple interest. How much interest has Julia earned by the end of the first year? $6.75
$92.59
$256.75
$675.00
2. Armand deposited $389.42 in a savings account that earns 3.2% simple interest. What is Armand’s account balance after seven years?
$87.23
$401.88
$476.65
$872.30

3. Andy deposited $1,567.12 in a savings account that earns 1.9% simple interest. What will Andy’s account balance be in nine months?
$1,567.12
$1,589.45
$1,596.90
$1,835.10

Answers

Answer:

Step-by-step explanation:

Simple interest formula is :

t is always in years here.

1.

p = 250

r = 2.7% or 0.027

t = 1

Simple interest earned = = $6.75

2.

p = 389.42

r = 3.2% or 0.032

t = 7

Simple interest earned = = $87.23

Amount after 7 years will be = = $476.65

3.

p = 1567.12

r = 1.9% or 0.019

t =

Simple interest earned = = $22.33

Account balance after 9 months = = $1589.45

1. $675
2. $389.42 (3.2)^7
3. 1567.12(1.9)^9/12
HIGH SCHOOL

What number would you have to add to both sides to complete the square? X^2-16x=-8

Answers

The question is about the number we need to add both sides. It is 64

This step is needed to make the left side of the equation a perfect square.  This is done by halving the linear coefficient, squaring that value, and then adding it to both sides of the equation.  In this case you would add:

(-16/2)^2=(-8)^2=64

So you would add 64 to both sides...

x^2-16x=-8

x^2-16x+64=56  now the left sides is a perfect square...

(x-8)^2=56
MIDDLE SCHOOL

What is the number three thousand eighty expressed in scientific notation?

Answers

Answer:

3.08 x

Step-by-step explanation:

3080 = 3.08 x 1000 = 3.08 x

HIGH SCHOOL

Write the possible explicit formula for the following sequences:
-17, -22, -27, -32

Answers

It's an arithmetic sequence:


HIGH SCHOOL

Which product of prime polynomials is equivalent to 36x3 – 15x2 – 6x??

Answers

Answer:

The answer is B: 3x(3x – 2)(4x + 1)

Step-by-step explanation:

First you use the x method t

Then you  find a and c

After you find and c you times them together

Now you look for b

Now you have to find a number that equals a&c and adds to 10

now you place the numbers in (    )

and boom you get

B: 3x(3x – 2)(4x + 1)

HOPE THIS HELPS YOU STAY SAFE:)

Factor ouf 3x
3x(12x^2-5x-2)
factor
(3x)(3x-2)(4x+1)
HIGH SCHOOL

Im super confused on how to do this. Please help Jamie has $500 to invest for 3 years. She finds a bank that will invest her money at a simple interest rate of 5%. Interest is T is equal to the principle P times the product of the rate r as a decimal and the time d in years.

Find the amount of interest earned after 3 years.

Answers

T = P*r*d

P = 500

r = 5% = 0.05

d = 3 years

500 *0.05*3 = 75

 interest = $75

MIDDLE SCHOOL

A car travels at a constant rate of 60 miles per hour complete the table

Answers

Miles traveled.
60. 120. 180. 240

------------------------------------
Hour. 1. 2. 3. 4

Answer:

60 120 180 240

Step-by-step explanation:

hour 1 2 3 4

MIDDLE SCHOOL

Two scientists are measuring lava temperatures. One scientist records temperature of 1725 degrees Fahrenheit. The other scientist records a temperature of 950 degrees Celsius. Which is the greatest temperature? [Use C= 5/9(F - 32)] (Please include how you got the answer, thank you so much!)

Answers

The second scientists with 950C the higher temp. How? Take the F and divide it by 9 so F/9 then use that and times it by 5. Now your done with the fraction. Now just minus 32 from that number.
1725/9=191.6repet
191.6repet*5=958.3repet
958.3repet-32=926.3repet
926.3 degrees C is the answer.

Answer:55

Step-by-step explanation:

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