FIRST PERSON TO ANSWER WILL GET BRAINLIEST
Emma bought a sweater that was 20% off. She paid $36 for the sweater, What was the original cost of the sweater?
Please hurry!
Answers
Answer:
$45
Step-by-step explanation:
let's work backwards. We know that it was 20% off, or otherwise 80% of the original cost. Let's represent the original cost with x:
0.8x = 36
Now we solve for x by dividing both sides by 0.8:
x = 45
Thus, the sweater was originally $45
Answer:
i hope i helped i wasnt sure how to answer
Step-by-step explanation:
Related Questions
can someone help me with this
how do u get for 6x+8=2x-7 to 4x+8=-7
Answers
Answer:17
Step-by-step explanation:
Answer: Look for like terms and then leave the equation as it is :)
Step-by-step explanation: Hope this helps :)
California, the most populous state, has approximately 40,000,000 people living in it. The population of the entire United States is about 3E8 people. About how many times greater is the population of the United States than the population of California?
State operation used and write answer in proper scientific notation (can use e)
Answers
Answer: 7.5 E 0
This is the same as saying 7.5 * 10^0
Both of these values convert to the number 7.5; meaning that the population of the US is about 7.5 times greater than the population of CA.
==========================================================
Work Shown:
40,000,000 = 40 million
40,000,000 = 4.0 * 10^7
Note how we move the decimal 7 spots to the right to go from 4.0 to 40,000,000
so the 7 in 10^7 tells us how many spots to move the decimal point in the base number 4.0
The number 4.0*10^7 can be condensed to 4E7. The "E" represents "times 10 to the"
As another example, "3E8" means "3 times 10 to the 8th power" which becomes 3.0*10^8 = 300,000,000 = 300 million
--------------------------
We have these two facts
x = Population of CA = 4 E 7 = 4*10^7y = Population of US = 3 E 8 = 3*10^8We'll divide the two populations to get
y/x = (3E8)/(4E7)
y/x = (3*10^8)/(4*10^7)
y/x = (3/4)*10^(8-7)
y/x = 0.75*10^1
y/x = 7.5
We can see that the population of the US is roughly 7.5 times greater compared to the population of CA.
Convert 7.5 to scientific notation, and we get
7.5 = 7.5*1 = 7.5 * 10^0 = 7.5 E 0
Keep in mind that these are population estimates, and populations change over time.
If Line MP is a perpendicular bisector to Line LN, find each value.
Answers
Answer:
5
Step-by-step explanation:
1. answer it
2. get it right
3. hit submit
The area of a rectangle is greater than or equal to 115 square centimeters. The width of the rectangle is 5 centimeters and the length of the rectangle is x centimeters. Select the possible value(s) of x.
a) x=22
b) x=23
c) x=24
d) x=25
Answers
Answer:
23
Step-by-step explanation:
HSHDKDIKDH I don't know if THIS IS TRUE THO GOOD LUCK
A school is having a canned food drive. Each class is challenged to collect 130 cans. If there are c classes in the school, which equation could be used to find the total number of cans, T, the school will collect if each class meets the challenge? *
1 point
T = 130c
T = 130/s
T = c/130
T = 130 + c
Answers
Answer:
The first answer 130c
Step-by-step explanation:
what is the equation of the line with a y-intercept of 4 and a point (8,8)
Answers
Answer:
y=1/2x+4
Step-by-step explanation:
to find the slope you need to know the change in y over the change in x
(0,4) and (8,8)
8-4/8-0
slope is 1/2
PLZ HELP with this question
Answers
Answer:B
Step-by-step explanation:
It says split so you would split v by 2
How much will Calvin earn if he works 21 hours ?
Answers
Answer:
its 232.5
Step-by-step explanation:
Divide 3 by one then multiply that by 15.
Answer by RonanJ
What is the length of BC?
Answers
Answer:
There is no pic u might want to repost it^^
Step-by-step explanation:
ABD=70 CBD=5x+13 ABC=3x+33
Answers
The value of x of the straight line will be 8° by using straight line property.
We are given the measures of 3 angles that form a straight line.
∠ ABD = 70°
∠ CBD = 5 x + 13
∠ ABC = 3 x + 33
We need to find the value of x.
We know that the straight line property states that the sum of measures of all the angle of the line should be 180°.
So, we get that:
∠ ABD + ∠ CBD + ∠ ABC = 180°
Substituting the values of the angles, we get that:
70 + 5 x + 13 + 3 x + 33 = 180
8 x + 116 = 180
8 x = 180 - 116
8 x = 64
x = 64 / 8
x = 8°
Therefore, we get that, the value of x of the straight line will be 8° by using straight line property.
Learn more about straight line here:
https://brainly.com/question/21727173
#SPJ1
PLEASE HELP IM BEING TIMED
One rollercoaster starts 72 feet above the ground and descends to ground level over a 24-foot horizontal distance. A second rollercoaster starts 39 feet above the ground and descends to ground level over a 13-foot horizontal distance. Are the descending parts of these rollercoasters parallel?
A.
Yes; when descending, the rollercoasters have the same slope.
B.
No; the first rollercoaster has a greater slope than the second rollercoaster.
C.
No; multiplying the slopes of the two rollercoasters does not give a product of –1.
D.
The two roller coasters do not have the same horizontal change, so they cannot be compared.
Answers
Answer:
its B
Step-by-step explanation:
Find the equation of a line that passes through (2, 1) and is parallel to the line passing through A( 1, 7) and B (-10, -3) Express the equation in slope-intercept form.
Answers
Answer:
y= 10/11x + 67/11
Step-by-step explanation:
Just follow the slope-intercept form formula-
Formula: y=mx+b
Key:
y = y-coordinate
m = slope
x = x-coordinate
b = y-intercept
Let me know if you have any questions, hope this helps! (:
What expression is equivalent to 27+15
Answers
Answer:
3 (9 + 5)
Step-by-step explanation:
Please help! Will give brainliest!
Answers
Answer:
The Answer is 4%
Step-by-step explanation:
Hope this helped have a Good Day! :)
Answer:
10
Step-by-step explanation:
decrease percentage= decrease price/original price × 100
please mark brainliest
if you follow me I will follow you
Will someone help! i will mark brainliest
Answers
Answer:
A
Step-by-step explanation:
Fraction of Juniors in Company B over total number of students.
$ 3/10 of bikes turned out to be defective during a bike inspection. What percentage is that?
Answers
Answer: 30%
Step-by-step explanation:
20POINTS20POINTS POINTS
Answers
The sum of the angles on this triangle should be
4/2 or 2
Simplify the expression:
2x^4 - 10x^3 / 6x
Answers
Answer:
(x^2(6x^2)-5)/3
Step-by-step explanation:
Given the expression
2x^4 - 10x^3 / 6x
On simplifying
2x^4 - 10x^3 / 6x
= 2x^4 - 10x^2/6
= [6(2x^4)- 10x^2]/6
= 12x^4 - 10x^2/6
= 2x^2(6x^2)-5/6
= (x^2(6x^2)-5)/3
hence the simplified form of the expression is (x^2(6x^2)-5)/3
solve for interval notation: 4x-6 ≥6x-20
tysmm
Answers
Answer:
x≤7
Step-by-step explanation:
Which number is IRRATIONAL?
A)
149
B)
V64
C)
172
D)
V121
Answers
Answer:
172
Step-by-step explanation:
The square root of 172 is equal to 2√(43). The square root of a non-perfect square is always an irrational number, meaning that it cannot be
Answer:
C -172
Step-by-step explanation:
One-third of the seventh grade class bought
tickets for the seventh grade dance. Then, 32
students bought tickets at the door. If there
were 158 students at the dance, how many total
students are there in the seventh grade? *equation*
Answers
Answer:
about 58 7th graders attended the dance
Step-by-step explanation:
quick maths
29
Which decimal is equivalent to ?
11
Choose 1 answer:
2.63
2.6363
2.63
2.6
Answers
Answer:
b easy question but can I get brainliest
Step-by-step explanation:
Is the relation a function?
Answers
Answer: yes its just set up diffrently
Step-by-step explanation:
Answer:
ans: yes it is because it matches the same number
What is th answer for number 15?
Answers
Answer:
a
Step-by-step explanation:
Which equation is NOT equivalent to p – 7 = 22? Select all that apply.
A. p – p – 7 = 22 – p
B. p – 7 – p = 22 – p
C. p – 7 + 22 = 22 – 7
D. p – 7 + 7 = 22 – 22
E. p – 7 + 7 = 22 + 7
Answers
Answer:
its a
Step-by-step explanation:
2. How far does a lorry move if it's travelling at:
a. 10m/s for 30s
b. 20m/s for 20s
c. 2m/s for 100s
d. 15m/s for 28s
Answers
b) 400m
c) 200m
d) 420m
Answer:
down below!
Step-by-step explanation:
a)300m
b)400m
c)200m
d)420m
i hope i helped<3
I’ll literally give out 400 points on my next question if someone answers this
Answers
Answer:
Exact Form:
1/5
Decimal Form:
0.2
Step-by-step explanation:
Olivia has a shoe box in the shape of a rectangular prism. She decorates 4 faces of the box,
leaving the top and the bottom without decorations. The unshaded parts of the model and
the diagram below show the parts that she decorates. What is the total area that Olivia
decorates?
L
Answers
she decorates 4 face of the box. (no diagram)
Click on the measurement that is equal to 24 kilogram
Answers
Answer:
24000
Step-by-step explanation:
there are 1000 grams in a kilogram so 24x1000=24000
may god bless you all!
Please answer these urgent
Answers
Step-by-step explanation:
a)
diameter:20cm
circumference: 62.83 cm
area: 314.15 cm^2
b)
radius:7.49 cm
diameter:15 cm
circumference: 47.1 cm
area: 176.24 cm^2
c)
Radius: 60cm
diameter:120 cm
circumference: 376.99cm
area: 11309.7cm^2
and so on....
[tex]area = \pi \: {radius}^{2} \\ \\ circumference = 2\pi \: radius[/tex]
i don't have time to evaluate the whole table.