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
Lelu [443]
3 years ago
7

Devon is buying 3 greeting cards that cost $0.97 each. How can rounding be used to estimate the total cost of the cards?

Mathematics
1 answer:
Elis [28]3 years ago
8 0

Answer:

<u><em>Since each card is about $1, the total cost is approximately 3 × 1 = $3.</em></u>

Step-by-step explanation:

So 3 x 1 = 3

1 > 0.97

0.97 x 3 ≈ 2.91 which if rounded to the nearest WHOLE number it would be approximately 3$

<em>Hope this helps!</em>

You might be interested in
How do I do this and what is the answer ?
natka813 [3]

Answer: u r supposed to solve for substitution/add/subtract and ur answer should be (-2,9)

Step-by-step explanation:

4 0
3 years ago
Assume that the probability of a defective computer component is 0.02. Components arerandomly selected. Find the probability tha
solmaris [256]

Answer:

0.0177 = 1.77% probability that the first defect is caused by the seventh component tested.

The expected number of components tested before a defective component is found is 50, with a variance of 0.0208.

Step-by-step explanation:

Assume that the probability of a defective computer component is 0.02. Components are randomly selected. Find the probability that the first defect is caused by the seventh component tested.

First six not defective, each with 0.98 probability.

7th defective, with 0.02 probability. So

p = (0.98)^6*0.02 = 0.0177

0.0177 = 1.77% probability that the first defect is caused by the seventh component tested.

Find the expected number and variance of the number of components tested before a defective component is found.

Inverse binomial distribution, with p = 0.02

Expected number before 1 defective(n = 1). So

E = \frac{n}{p} = \frac{1}{0.02} = 50

Variance is:

V = \frac{np}{(1-p)^2} = \frac{0.02}{(1-0.02)^2} = 0.0208

The expected number of components tested before a defective component is found is 50, with a variance of 0.0208.

5 0
2 years ago
The seventh grade class is raising money to have a class trip at the end of the year. They began the year with $2,500. Now they
Lubov Fominskaja [6]

Answer:

21.6%

Step-by-step explanation:

7 0
2 years ago
F(x)=2x-3 g(x)=x^2+1 find g(2)
Hitman42 [59]

Answer:

g(2)=5

Step-by-step explanation:

since g(x) is equal to x^2+1, you just plug in the value of 2 for x, to get 2^2+1, and 2 to the power of 2 (also known as 2 squared) is equal to 4, which makes your equation 4+1, which equals 5.

3 0
2 years ago
Find the sales tax for three cds if each cd is $14.29 and the sales tax is 7.25%
mestny [16]
14.29 * .0725 = 1.04
1.04 * 3 = 3.12
8 0
3 years ago
Read 2 more answers
Other questions:
  • Sasha counted 24 feet in all of them in the barn how many dogs and birds and buyers do you think are in the barn today there are
    12·1 answer
  • BRAINLIESTTTT!!!! ASAP
    6·1 answer
  • A company uses paper cups shaped like cones for its water cooler. Each cup has a height of 12cm, and the base has a diameter of
    5·1 answer
  • Will be giving brainliest to the correct one, no links or account will be reported:)
    7·2 answers
  • What is the slope of the line parallel to the line in part a above how do you know what is the relationship between lines that a
    15·1 answer
  • Can someone please help me with math.
    6·2 answers
  • What is 40% of 40? SHOW YOUR WORK AND EXPLAIN!
    9·1 answer
  • Find the value of z in the triangle shown below.
    13·1 answer
  • A fabric store is having a sale. The price of every item in the store has been reduced by 30%. Which equation shows the
    12·1 answer
  • Graph y=|3x| using as many points as needed
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!