Mathematics College

The price of a computer fell 20% this year. If the computer now costs $750, how much did it cost last year?
(step-by-step if possible)

Answers

Answer 1

Answer:

$937

Step-by-step explanation:

P(1-20/100)=750- 1 is the object the you take away the percentage that is in

fraction form

P(1-.2)=75-take it from fraction form to decimal form

P(.8)=750-this is the final product of the equation above

750/.8-Take the current price and the decimal and divide

75000/80- take the .8 and add two 0's to get the whole accurate amount

937.5-Price before the price fell

Sorry I'm not the best at explaining things hoped this helped!

Related Questions

1. The most massive planet in the solar system, Jupiter, has a mass of about 1,898,000,000,000,000,000,000,000,000 kg. Estimate Jupiter's mass using a one-digit whole number times a power of 10. Be sure to include units.
A. 1.9 X 10^18 kg
B. 2 x 10^18 kg
C. 1.9 x 10^27 kg
D. 2x 10^27 kg​

Answers

Answer:

D. [tex] 2*10^{27} kg [/tex]

Step-by-step explanation:

Mass of Jupiter is given as 1,898,000,000,000,000,000,000,000,000 kg

Estimating this to the nearest whole number would be = 2,000,000,000,000,000,000,000,000,000 kg (rounding up the the "1,898")

To express this in scientific notation form, simply count how many zeros we have to the nearest whole number, 2.

We have 27 zeros there.

Therefore, we would multiply the whole number, 2, by 10 raise to the power of 27.

An estimate of the mass of Jupiter = [tex] 2*10^{27} kg [/tex]

What is the distance between the following points?
Y
7
10-
9+
8+
7+
6+
5+
4+
3 |
2+
1+
+++++++
1 2 3 4 5 6 7
A++
-3-2

Answers

Answer:

+1 is the distanse of the following point

What is the answer PLEASEE

Answers

Answer:

[tex]3^{-4}[/tex]

Step-by-step explanation:

[tex]3^5\cdot \:3^{-9}=3^{5-9}=3^{-4}[/tex]

A class of 128 students from civil, mechanical and electrical engineering backgrounds is divided into 2 sections (sections A and B). Section A contains of 18 civil engineers and a total of 50 students. Section B contains 44 mechanical engineers. There are a total 40 civil engineers and 60 mechanical engineers in the class. What is the probability that a random electrical engineering student is from section A

Answers

Answer:

The probability is 0.5714

Step-by-step explanation:

This is a probability question. We are interested in calculating the probability that a random electrical engineering student is from section A.

Mathematically the probability will be;

Number of electrical engineering students in section A/ Total number of electrical engineering students in both sections

Total number of electrical engineering students = 128 - 60 -40 = 28

Now let’s calculate the number of electrical students from section A

Number of mechanical and electrical = 50-18 = 32

Now, there are a total of 60 mechanical engineers and 44 in B; So the number of mechanical engineers in A = 60-44 = 16

So the number of electrical engineers in A = 32-16 = 16

So the probability will be;

16/28 = 4/7 = 0.5714

Can someone answer this pls?? FAST

Answers

Correct answers= 18•2 1/4= 9

Incorrect answers= 12•-1/2=-6

Answer= 3

Yolanda is planning to put a pool in her backyard. The scaled model below gives the reduced measures for diameter and depth. 18 cm 4 cm Not drawn to scale The yard space is large enough to have a pool that has a diameter of 27 feet. If Yolanda wants to keep the pool in proportion to the model, what will be the depth of the pool? O 4.5 feet O 5 feet 06 feet 0 6.75 feet Wema​

Answers

Answer:

B

Step-by-step explanation:

(6x + 7)ºx (8r - 17)
Find the value of x.
O 10
O 11
O 12
O 13

Answers

70% sure it’s 12 I did it 3 times and 2 times it came out as 13 once as 14 but I’m pretty sure it’s 12

A survey of 140 pet owners yielded the following information: 47 own fish; 53 own a bird; 50 own a cat; 68 own a dog; 2 own all four; 11 own only fish; 14 own only a bird; 10 own fish and a bird; 21 own fish and a cat; 26 own a bird and a dog; 29 own a cat and a dog; 3 own fish, a bird, a cat, and no dog; 1 owns fish, a bird, a dog, and no cat; 9 own fish, a cat, a dog, and no bird; and 10 own a bird, a cat, a dog, and no fish. How many of the surveyed pet owners have no fish, no birds, no cats, and no dogs? (They own other types of pets.)

Answers

Answer:

18

Step-by-step explanation:

This is venn diagram with 4 elements

Fish = n(F)

Bird = n(B)

Dog = n(D)

Cat = n(C)

The formula is given as

n (F ∪ B ∪ C ∪ D) - n(pet owners that have not fish, bird, cat or dogs) = n(F ) + n ( B ) + n (C) + n(D) - n ( F ∩ B) - n ( F ∩ C) - n ( F ∩ D) - n ( D ∩ B) - n ( D ∩ C) - n ( C ∩ B) + n(F ∩ D ∩ C) + n(F ∩ D ∩ B) + n(F ∩ C ∩ B) + n(D ∩ B ∩ C)- n (A ∩ B ∩ C ∩ D)

= 140 - n(pet owners that have not fish, bird, cat or dogs) = 47 + 53 + 50 + 68 - 21 -26 - 29- 10 - 2

140 - n = 218 - 88

140 - 218 - 88 +[(9 + 4 + 10) -(11 + 14)] = n

140 - 218 - 88 + (33 - 25)= n

140 - 130 + 8 = n

10 + 8 = n

Hannah had $237 in her
bank account at the start of
the summer. She worked for four
weeks and now she has $1685
in her bank.how much did Hannah make each week in her summer job

Answers

Answer:

$362

Step-by-step explanation:

Step 1:

$1685 - $237

Step 2:

$1448 ÷ 4

Answer:

362

Hope This Helps :)

There are 48 empty seats and 52 occupied seats on an airplane. What is the ratio of the number of empty seats to the number of occupied seats?

Answers

Answer:

48/52

Step-by-step explanation:

(-1/3)-(-9/5) to the lowest term

Answers

Answer:

Step-by-step explanation:

-1/3 + 9/5

-3/15 + 27/15

24/15 = 8/5 = 1 3/5

Find the value of x that will make A||B.
A
B
4x
2x
X =
?

Answers

Answer:

x = 30

Step-by-step explanation:

Lines A and B are parallel lines and a transverse line is intersecting these lines at two distinct points.

By the definition of interior consecutive angles, sum of the measures of interior consecutive angles is 180°.

4x + 2x = 180°

6x = 180

x = 30

Therefore x = 30 will be the answer.

The cookie store had 187 cookie jars with 12 cookies in each cookie jar. How many cookies did the cookie store hav in all

Answers

15.5 I got this answer because I used a calculator.... I need help myself
2,224 total. just multiply 187 by 12

Does anyone know how to figure this out? can you please explain it to me?

Answers

Answer:

x=108'

y=25'

Step-by-step explanation:

180 = 72+x

so,

x = 180-72

  = 108'

x = 5y-17 ( but we know x is 108')

so 108 = 5y -17

108+17 = 5y

5y = 125

y = 25

Answer:

x = 108 degree

y = 25 degree

Step-by-step explanation:

You can use law of transversal to get these

Find JH
G. H. I. J
2. 12.

Answers

Answer:

JH = 17

Step-by-step explanation:

GH = 2

IJ = 12

GI = 7

find:  JH

HI =  7 - 2

HI = 5

JH = 12 + 5

JH = 17

Question 3 of 8
Which of the following are measurements for rectangles that are similar to a
rectangle with a width of 10 and a length of 20? Check all that apply.
A. 17 and 34
B. 2.5 and 6
O C. 15 and 30
0 D. 14 and 30
O E. 5 and 10

Answers

C and E are the corrects answers
C and E are the right answers.

What is the value of x? (X+40)

Answers

-40

Step-by-step explanation:

at the moment your equation is x+40=0

you move the forty to the other side by subtraction and you get x= -40

Answer:

x=-40

Step-by-step explanation:

find the integer that makes this subtraction statement true -3 - ? = -5

Answers

Answer:

[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{2}}}}}[/tex]

Step-by-step explanation:

Let the missing integer be x

Solve for x

[tex] \sf{ - 3 - x = - 5}[/tex]

Move 3 to right hand side and change it's sign

[tex] \dashrightarrow{ \sf{ - x = - 5 + 3}}[/tex]

The negative and positive integers are always subtracted but posses the sign of the bigger integer

[tex] \dashrightarrow{ \sf{ - x = - 2}}[/tex]

Change the signs of both sides

[tex] \dashrightarrow{ \boxed{ \sf{x = 2}}}[/tex]

Hope I helped!

Best regards! :D

Find the measures of angles 1 through 5 in the figure shown.
Its 4 PARTS​

Answers

Angle 1 = 44
Angle 2 = 136
Angle 3 = 44
Angle 4 = 136
Angle 5 = 62

The measure of angle ∠1 is 44 degrees and the measure of angle ∠5 is 62 degrees.

What is an angle?

Angle is the space between the line or the surface that meets.  And the angle is measured in degree. For complete 1 rotation, the angle is 360 degrees.

Vertically opposite angle - When two lines intersect, then their opposite angles are equal.

Complementary angle - Two angles are said to be complementary angles if their sum is 90 degrees.

Angle ∠1 and 46° are complementary angles. Then we have

∠1 + 46° = 90°

        ∠1 = 44°

Angle ∠1 and ∠3 are vertically opposite angles. Then we have

∠1 = ∠3 = 44°

The sum of all the angles of the triangle is 180 degrees. Then we have

∠3 + 74° + ∠5 = 180°

44° + 74° + ∠5 = 180°

                 ∠5 = 62°

More about the angled link is given below.

https://brainly.com/question/15767203

#SPJ2

PLS HELP I DONT UNDERSTAND :( WILL MARK BRAINLIEST!!! :)

Answers

Answer:

3/50

Step-by-step explanation:

rise over run

3/50

Answer:

A. 3/50

Step-by-step explanation:

subtract the y values in the form where the first point is subracted from the second point: 460-310=150

subtract the x values in the form where the first point is subracted from the second point: 3500-1000= 2500

then put these numbers in fraction form: 150/2500

simplify: 3/50

how do find the domain and range from a graph, and writing it as an inequality ​

Answers

To determine the domain is the same as to determine which numbers appear as the first number (the x-value) in an ordered pair that is part of the graph.
To determine the range is the same as to determine which numbers appear as the second number (the y-value) in an ordered pair that is part of the graph.
Here are some examples:
y
≥
x
2
+
3
graph{y >= x^2+3 [-11.6, 13.72, 0.15, 12.81]}
Although it is not 100% certain from just the graph, this graph does get wider and wider. Every
x
does appear in some ordered pair on the graph. The domain is all real numbers.
The
y
values that appear start at
3
and go up. We get all numbers greater than or equal to
3
. Inequality:
y
≥
3
.
If you've learned interval notation, you write:
[
3
,
∞
)
x
2
+
y
2
9
≤
1
# graph{x^2 + y^2/9 <= 1 [-5.35, 7.14, -3.105, 3.14]}
Domain (x-values) Go from
−
1
to
1
(inequality:
−
1
≤
x
≤
1
)(interval:
[
−
1
,
1
]
)
Range:
−
3
to
3
(inequal:
−
3
≤
y
≤
3
(interval:
[
−
3
,
3
]
)
More challenging:
x
2
+
y
2
<
9
graph{x^2+y^2 < 9 [-5.35, 7.14, -3.105, 3.14]}
The dotted line is not included, so we do not include the points at
−
3
or at
3
.
Domain:
−
3
<
x
<
3
(interval
(
−
3
,
3
)
)
R
a
n
≥
:
-3(
∫
e
r
v
a
l
(-3, 3))
Last one:
x
−
y
2
<
6
graph{x- y^2 < 6 [-9.87, 30.68, -9.96, 10.32]}
Domain: all real numbers
Range: all real numbers

What tranformatuon were applied

Answers

Answer:

180 counter clockwise............

If point p partitions line BA,what would be the part to whole ratio

Answers

Answer:

4 / 5

Step-by-step explanation:

From the image attached, Line BA is divided into a total of 5 equal proportions (or intervals). Point P is placed at the 4th proportion of the divided line, also the distance between point P and point A is 1 propotion. The ratio in which point P divides the line BA is given as:

Ratio = BP : PA = 4 : 1

Ratio = 4 : 1

The part to whole ratio If point p partitions line BA = BP / BA = 4 / 5

Part to whole ratio = 4/5

what are strategies to find rational numbers

Answers

Rational number x and y is to dived their sum by 2

functions occur when every x-value is associated with exactly one

Answers

The answer is y-value. A function is formed when one x-value corresponds with one and only one y-value.

Which of the following can not be used to express the number 8?
eight below zero
positive eight
+8
eight more than zero

Answers

Answer:

A positive number or a number that is greater than zero

Step-by-step explanation:

Use the grouping method to factor the polynomial below completely.
x2 – 3x2 + 5x - 15
A. (x+3)(x - 5)
B. (x - 3)(x+5)
O C. (X - 5)(x+3)
O D. (2 + 5)(x-3)

Answers

Step-by-step explanation:

You can let me know, but i dont think -3x² is supposed to be squared in this question because then it would make it unsolvable.

5x-15

can be simplified to 5(x-3)

x²-3x

can be simplified to x(x-3)

Then u rewrite it (5 + x)(x - 3)

Chen burns 354 calories in 1-hour swimming. He swam for 28 hours last month. How many calories did Chen burn in all last month from swimming?

Answers

Answer: he burned 9912 calories all last month

5 ( 3 squared x) + 9 ( 3 squared x)

Answers

Answer:

42x^2

Step-by-step explanation:

[tex]5(3x^{2} )+9(3x^2)\\\\=(5+9)(3x^2)\\\\=14(3x^2)\\\\=42x^2[/tex]

A box is 21 centimeters tall. How tall would the box measure in meters?

Answers

Answer:

0.21

Step-by-step explanation:

divide the length value by 100  21 centimeters in meters is 0.21

Answer:

0.21 its the k12 test.

Step-by-step explanation:

Other Questions
Can someone answer all these for me please The gcf of 36 and 60 Why did the native Americans get involved with the French and Indian war? In a study, the data you collect is Habits on a Always/Sometimes/Never scale.What is the level of measurement? Examination the difference between the rights given to men in Ancient Greek society and the rights given to women what rights did they have in common Five kg of water is contained in a pistoncylinder assembly, initially at 5 bar and 240C. The water is slowly heated at constant pressure to a final state. The heat transfer for the process is 2660 kJ and kinetic and potential energy effects are negligible. Determine the final volume, in m3, and the work for the process, in kJ. 2x(8x - 10a. Solve for xb. Find the measure of the angle on the rightc. Find the measure of the angle on the left The coordinates of points A and B are A(4, -2) and B(12, 10). What are the coordinates of the point that is 1/4 of the way from A to B? How did Empires respond to increased diversity and Interconnectedness? 1Select the correct text in the passage.Which two words are domain-specific words?In the 1860s, a fossil of an avian or flying dinosaur known as Archaeopteryx was found. Scientists identified it as a combination of bird and reptile. This discovery led to the theory that birds have evolved from carnivorous avian dinosaurs. Archaeopteryx lived in the southern region of Germany during the Late Jurassic period when Germany had a tropical climate.Reset Next The health triangle consists of: Physical, Social, and Mental Health.O TrueO False In which early cultures was geography developed Factorise Fully x^2 + x I NEED YOUR HELP!!!!!!!!!!Do you think cultural movements like the Great Awakening contributed to the separation between the American colonies and Great Britain, or did they bring people on both sides of the Atlantic closer together?PLZ HELP ME!! In a watershed, the ____________ sheds, or gets rid of, water. Convert 6 7/20into a decimal What is the meaning behind this quote "Art washes away from the soul the dust of everyday life" Read the sentence below about the Chicago fire of 1871. Many people tried very hard to save the building of the Chicago Tribune. Which revision is the best example of adding concrete detail? Many people tried very hard for a very long time to save the Chicago Tribune building during the fire. In an attempt to save the Chicago Tribune building, men stayed on the roof for as long as possible during the fire. In an attempt to save the Chicago Tribune building, men stayed on the roof for as long as possible during the fire, keeping it wet and stamping out cinders. Many people kept the roof of the building wet and stamped out cinders, trying to stop it from being enveloped in flames as the fire spread very quickly 10 friends share six pizzas equally. What fraction of a pizza does each friend get? Whats the value of k?