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
DerKrebs [107]
3 years ago
11

Seraphina is driving two hours to visit her family. For the first hour, she traveled at a speed of 56 miles per hour. Then, in t

he second hour, she traveled at a speed of 71 miles per hour. What is the percentage increase of Seraphina's speed? If necessary, round to the nearest tenth of a percent.
A. 21.1%
B.73.2%
C.26.8%
D.78.9%
Mathematics
1 answer:
wel3 years ago
4 0

Answer: 21.1 %

Step-by-step explanation:

You might be interested in
Which piecewise relation defines a function?
RideAnS [48]
Answer: h(x)

Explanation:

1) f(x) is not a function because there is an ambiguity for x = 4.

x = 4 belongs to both intervals - 2 ≤ x ≤ 4 and x ≥ 4

Then you find two different possible images for x: 0 and -(2)^2 = - 4.

That makes that f(x) be not a function.

2) similar thing happens with g(x)

as per the given relation the value of g(x) for x = 2 is 4 and 4+1 = 5. Which makes that g(x) be not a function.

3) j(x) is not a function because the image of x = -4 is -3(-4) = 12 and 3.

4) h(x) is a function, because there is not any ambiguity in its definition, for every x in its domain there is only one image h(x).
8 0
3 years ago
Read 2 more answers
The area of a circle is a square miles. What is the circumference?
Komok [63]

Answer:

What is the area?

Step-by-step explanation:

5 0
2 years ago
A tournament is being run between two teams, A and B. This is a 2- tournament meaning that the first team to win 2 games is the
natta225 [31]

Answer:

Step-by-step explanation:

For first game PA = 1/3

For second game PA = 1/3 ( If A is not lost in first game )

 = 2/5 (If A is lost in first game )

For conclusion of game in three matches :

If A wins , the probability is

PA , PB , PA  = 1/3 X 2/3 X 3/5 = 6/45

PB , PA , PA = 2/3 X 3/5 X 1/3 = 6/45

If B wins

PA, PB, PB = 1/3 X 2/3 X 2/5 =  4/ 45

PB, PA , PB = 2/3 X 3/5 X 2/3 = 4 / 15

Total probability of conclusion of game in 3 matches

= 6/45 +6/45 + 4/45 +4/15 = 28/45

b )

For the game concluding in 2 matches , the probability are as follows

PA,PA = 1/3 X 1/3 = 1/9

PBPB = 2/3 X 2/5 = 4 / 15

Total probability

= 1/9 + 4/15 = 17/45

So PA = 1/9 / 17/45

= 5/17

5 0
3 years ago
A store is having a clearance sale where merchandise on the sales rack is reduced by 80% from the original price. if a jacket wa
miskamm [114]
First multiply 76 by 80/100
(76 x 80 )/100 = 60.8

Now because the price has to be reduced...
76 - 60.8 = $15.2

Hope this will help.
4 0
2 years ago
Find the number that makes the ratio equivalent to 1:6.<br> 9:__
Anarel [89]
Answer: 54

-------------------------------------------------------------------

Explanation:

The first ratio is 1:6. The jump from 1 to 6 has us multiplying the 1 by 6 to get 6. 
1*6 = 6
So we follow the same rule of "multiply by 6" to go from 9 to 54 (9*6 = 54)

Or you can use a proportion to get
1/6 = 9/x
1*x = 6*9 ... cross multiply
x = 54
and we get the same answer
6 0
3 years ago
Other questions:
  • What is 16 over 25 in percent notation
    5·2 answers
  • Which of the following functions illustrates a change in amplitude?
    10·2 answers
  • Last month sue made $200 by baby-sitting for 12 hours and tutoring for 20 hours. This month she worked the same number of hours
    13·2 answers
  • A patio floor is shaped like a rectangle with a
    13·1 answer
  • License plates in a particular state display 22 letters followed by 33 numbers. how many different license plates can be manufac
    6·1 answer
  • Explain the difference in meaning between l-3l and -3.
    5·2 answers
  • a school librarian ordered new books for the library. 1/3 are science 2/5 are biography and the rest of the books are fiction. W
    12·2 answers
  • Tuck is 11 years old, and he has a younger
    9·2 answers
  • In cashing a check for $220, Christina asked for the whole amount in $10 and $20 bills. She received a total of 13 bills, four o
    5·1 answer
  • What is the slope of<br> the line?<br><br> Give your answer as<br> a fraction in simplest<br> form.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!