1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
alisha [4.7K]
3 years ago
14

A sweater was on sale at %40 off the regular price. Ella saved $20 by buying the sweater on sale. What was the regular price of

the sweater?
Mathematics
2 answers:
Artyom0805 [142]3 years ago
7 0

so she saved $20 and that was 40% of the regular price, let's say the regular price is "x".

if 20 is 40%, what is "x" or namely the 100%?

\bf \begin{array}{ccll} amount0&\%\\ \cline{1-2} 20&40\\ x&100 \end{array}\implies \cfrac{20}{x}=\cfrac{40}{100}\implies \cfrac{20}{x}=\cfrac{2}{5}\implies 100=2x \\\\\\ \cfrac{100}{2}=x\implies 50=x

mixas84 [53]3 years ago
7 0

Answer:This is an equation! Solutions: x=1.

Step-by-step

You might be interested in
Which graph represents the solution set of the inequality x+2>6
Andreyy89

Answer:

x + 2 < 6

x < 4

d represents the inequality

3 0
3 years ago
Read 2 more answers
Which of the following is not a prime factor?
Liono4ka [1.6K]
63 is the answer to your problem. Hope this helps!
8 0
2 years ago
Read 2 more answers
Find the midpoint of PQ<br><br> P(4 1/3, 3 1/6), Q(-2 1/5, 3 2/3)
Paha777 [63]

Answer:

(1\frac{1}{15},3\frac{5}{12})

Step-by-step explanation:

To find the midpoint, you must average the x's then average the y's.

So the x's are 4 \frac{1}{3} and -2\frac{1}{5}.

The y's are 3\frac{1}{6} and 3\frac{2}{3}.

To find an average of a data with 2 elements you must add the two elements then take that sum and divide it by 2.

So this is what we will do with the x's then the y's.

So first x:

\frac{4\frac{1}{3}+-2\frac{1}{5}}{2}

Write as improper fractions:

\frac{\frac{13}{3}+\frac{-11}{5}}{2}

Division by 2 is the same as multiplying by 1/2:

\frac{13}{6}+\frac{-11}{10}

The least common multiple of 6 and 10 is 30.  We will multiply first fraction by 5/5 and 3/3 for the second so we can have the same denominator.

\frac{65}{30}+\frac{-33}{30}

Now that the bottoms are the same we can write as one fraction:

\frac{65+-33}{30}

Simplify:

\frac{32}{30}

If you want the answer as a mix fraction like your question began as we can do that by first figuring out how many 30's are in 32 and what is the remainder of that division.

There is one 30 and 32 and so 32-30=2 is the remainder.

1\frac{2}{30}

Reduce by dividing top and bottom by 2:

1\frac{1}{15}

Now for y:

\frac{3\frac{1}{6}+3\frac{2}{3}}{2}

Write the mix fractions as improper fractions:

\frac{\frac{19}{6}+\frac{11}{3}}{2}

Dividing by 2 is the same as multiplying by 1/2:

\frac{19}{12}+\frac{11}{6}

The least common multiple of 12 and 6 is 12 so I'm going to multiply the second fraction by 2/2 so the denominators will be the same:

\frac{19}{12}+\frac{22}{12}

Since the denominators are the same we can write as a single fraction:

\frac{41}{12}

How many 12's are in 41? 3 and so the remainder is 41-3(12)=41-36=5.

3\frac{5}{12}

So the midpoint is:

(1\frac{1}{15},3\frac{5}{12}).

6 0
3 years ago
Read 2 more answers
The radius of a circle is 9 inches. What is the circle's area?<br> Use 3.14 for ​.
Anna007 [38]

Answer:

<u>254.34 in²</u>

Step-by-step explanation:

<u>Area of a circle</u>

  • A = πr²
  1. <u>r = radius of the circle</u>

<u>Solving</u>

  • A = 3.14 x (9)²
  • A = 3.14 x 81
  • A = <u>254.34 in²</u>
5 0
1 year ago
Read 2 more answers
I Only Need #9 Not 10
Minchanka [31]

Answer:

6

Step-by-step explanation:

Remember the last question? to find circumference you have to multiply the diameter by 3.14? well same here except you divide the circumference by 3.14 to get the diameter. so divide 18.84 ÷ 3.14 = 6

~R3V0

d= \frac{C}{\pi }

C = \pi d (pi times d)

5 0
3 years ago
Other questions:
  • Larry Lazy purchased a one year membership at a local fitness center at the beginning of the year. It cost him $150. He goes twi
    13·2 answers
  • Im badd i kinda understand but not really understanding it
    7·2 answers
  • If a point is reflected over the x-axis, the x-coordinate will not change. True False
    14·2 answers
  • The widths of two similar rectangles are 25 ft. and 20 ft. What is the ratio of the perimeters?
    8·1 answer
  • John Paul gave the cashier $60 to pay for 8 bags of potatoes. The cashier gave him $24.32 in change. What is the cost in dollars
    9·1 answer
  • Help please
    9·1 answer
  • Use the protractor to measure each angle formed by the intersecting lines.
    10·1 answer
  • Necesito ayuda en esta tarea ​
    15·2 answers
  • Square ABCD is divided into 5 rectangles that all have the same area. FH = 20 and CK = KD. Find the length of BE.
    5·2 answers
  • Which equation could be used to solve the following problem?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!