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
umka2103 [35]
3 years ago
10

A ​used-car dealership buys a car for ​$2700 and then sells it for ​$3900. What is the percent​ increase?

Mathematics
1 answer:
uranmaximum [27]3 years ago
7 0

Answer:

400/9 = 44. 444... or 44.5

Step-by-step explanation:

difference in price/original price * 100

1200/2700 * 100

4/9 * 100

= 400/9

<em>percentage is 44.5 %</em>

You might be interested in
1161.90 to the nearest hundred
forsale [732]
1 thousand
1 hundred---- need to round up 
6 tens 
1 ones 
Would be rounded up to 1200
Hope this helps 
8 0
3 years ago
Subtract - 2x - 10 from 10x2 + 3.
krok68 [10]

Answer:

10x2 + 2x + 13.

Step-by-step explanation:

10x2 + 3  - (-2x - 10)      (Note you have to put the -2x - 10 in brackets).

= 10x2 + 3 + 2x + 10      (Distributing the negative over the brackets).

= 10x2 + 2x + 13.

8 0
3 years ago
What is the principal if...<br> Rate = 22%<br> Time<br> 1 year<br> Interest = $110
Zanzabum

Answer:

Interest=PTR/100

110 =P×1×22/100

11000=22P

P=500

8 0
3 years ago
1. A luge race is very dangerous, and a crash can cause serious injuries. The league requires anyone who has a crash to have a t
antiseptic1488 [7]

Answer:

0.7061 = 70.61% probability she will have her first crash within the first 30 races she runs this season

Step-by-step explanation:

For each race, there are only two possible outcomes. Either the person has a crash, or the person does not. The probability of having a crash during a race is independent of whether there was a crash in any other race. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

A certain performer has an independent .04 probability of a crash in each race.

This means that p = 0.04

a) What is the probability she will have her first crash within the first 30 races she runs this season

This is:

P(X \geq 1) = 1 - P(X = 0)

When n = 30

We have that:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 0) = C_{30,0}.(0.04)^{0}.(0.96)^{30} = 0.2939

P(X \geq 1) = 1 - P(X = 0) = 1 - 0.2939 = 0.7061

0.7061 = 70.61% probability she will have her first crash within the first 30 races she runs this season

7 0
3 years ago
If six girls can finish sweeping the floor of a hall in 45mins,how long will the same work take ten girls to do
AleksandrR [38]

Answer:

15 minutes i think

Step-by-step explanation:

45÷6=7.5

meaning 7.5 minutes per girl

so 4 girls would be 30 minutes of work

so 45-30=15

4 0
3 years ago
Other questions:
  • Determine whether the function f(x) = 3x4 is even or odd.
    7·2 answers
  • What is the answare to 12-3+1×3÷3×57=
    15·1 answer
  • An automotive manufacturer wants to know the proportion of new car buyers who prefer foreign cars over domestic. Step 1 of 2: Su
    5·1 answer
  • Plz help answer these questions I’m confused. Worth 25 points.
    8·2 answers
  • AAAA HELP!!!!!!!!!! 20 POINTS!!!!!!!!!!!!!!!
    6·2 answers
  • Paula wants to buy 3 shirts and 2 belts. The shirts cost $16.89 each, and the belts cost $8.97 each. Paula has $45. Which of the
    5·1 answer
  • A camera can take 3/4 of a picture per second. How many pictures can it take in 16<br> seconds?
    8·1 answer
  • Julie has a jewelry box shaped like a cube. The volume of the jewelry box is v cubic inches. Part A: Write an expression that re
    12·1 answer
  • What is the volume of a sphere with a diameter of 4.9 cm, rounded to the nearest
    5·1 answer
  • Someone help me pleasw
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!