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
erastovalidia [21]
3 years ago
9

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
1 answer:
barxatty [35]3 years ago
8 0

Answer:

the answer is $50 for the full price of the sweater

Step-by-step explanation:

if you know $20 is 40% what is 20% it is $10 and then multiple it by 5 because  20 times 5 is 100 and you get 50

You might be interested in
A batch of 40 semiconductor chips is inspected by choosing a sample of 5 chips. Assume 10 of the chips do not conform to custome
butalik [34]

Answer:

a) 658008 samples

b) 274050 samples

c) 515502 samples

Step-by-step explanation:

a) How many ways sample of 5 each can be selected from 40 is just a combination problem since the order of selection isn't important.

So, the number of samples = ⁴⁰C₅ = 658008 samples

b) How many samples of 5 contain exactly one nonconforming chip?

There are 10 nonconforming chips in the batch, and 1 nonconforming chip for the sample of 5 be picked from ten in the following number of ways

¹⁰C₁ = 10 ways

then the remaining 4 conforming chips in a sample of 5 can be picked from the remaining 30 total conforming chips in the following number of ways

³⁰C₄ = 27405 ways

So, total number of samples containing exactly 1 nonconforming chip in a sample of 5 = 10 × 27405 = 274050 samples

c) How many samples of 5 contain at least one nonconforming chip?

The number of samples of 5 that contain at least one nonconforming chip = (Total number of samples) - (Number of samples with no nonconforming chip in them)

Number of samples with no nonconforming chip in them = ³⁰C₅ = 142506 samples

Total number of samples = 658008

The number of samples of 5 that contain at least one nonconforming chip = 658008 - 142506 = 515502 samples

6 0
3 years ago
What is the value of x in the product of powers below?
Luda [366]
-7
Bbbbbbbbbbbbbbbbbbbbbb
7 0
3 years ago
1. Classify the following polynomials as monomial, binomial trinomial and polynomial: <br> i) 2x + y
chubhunter [2.5K]

Answer:

binomial

Step-by-step explanation:

a monomial has 1 term

a binomial has 2 terms

a trinomial has 3 terms

2x + y has 2 terms and so is a binomial

6 0
2 years ago
Read 2 more answers
The following data values represent a population. What is the variance of the
Ann [662]

Answer:

B 14 is the correct answer

8 0
2 years ago
What decimal is equivalent to 7/8
aleksley [76]

7/8 = 0.875 is the decimal equivalent.

7 0
2 years ago
Read 2 more answers
Other questions:
  • .<br> Write the ratio. Explain what the ratio means.<br> 1.golf balls to golf tees
    8·1 answer
  • The length of a rectangle is 6 meters more than its width. If the area is 135 square meters, what is its width?
    8·1 answer
  • A pair of shoes coats $25 to make. This means that you need to charge a price of atleast __ just to cover you Options : A:$25 B:
    12·1 answer
  • Pleaaseeee help me :/
    6·1 answer
  • A writer chargers $5 per word plus a startup fee of $50 per article. Write an equation in standard form to represent the total c
    14·2 answers
  • Can someone help me with this it’s urgent what’s the answer or property of this problem C?
    7·1 answer
  • A function is created to represent the costs of living per person in the family. What restrictions would be made to the domain?
    15·1 answer
  • How do i find the median in this question.
    9·1 answer
  • <img src="https://tex.z-dn.net/?f=5x-3x%5E%7B3%7D%2B1%2B6x%5E%7B2%7D" id="TexFormula1" title="5x-3x^{3}+1+6x^{2}" alt="5x-3x^{3}
    13·2 answers
  • 6x – 64 = 2x - 44<br>solve for x​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!