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
MAXImum [283]
2 years ago
9

Frazer cycles the first 20 miles at an average speed of 21 mph. The second part is more uphill, and he only manages 13mph. By wh

at percentage did the speed decrease
Mathematics
1 answer:
Artist 52 [7]2 years ago
3 0

Answer:

 38.1% decrease

Step-by-step explanation:

A percentage change is found from ...

 % change = (change)/(original amount) × 100%

 = (new value - original amount)/(original amount) × 100%

 = (13 -21)/21 × 100% = -8/21 × 100% ≈ -38.1%

You might be interested in
Anne wants to find the answer to 1999 + 1476.
Leviafan [203]
1999 +1476
= 1999 +1476 +1 -1
= (1999 +1) +(1476 -1)
= 2000 +1475 . . . . . . . . corresponds to the 1st selection
5 0
3 years ago
Write an inequality to model the situation.
svet-max [94.6K]

Answer:

n >21

Step-by-step explanation:

The number exceeds 21 or is greater than 21.

‘>’ represents greater than.

Let the number be n.

n >21

8 0
3 years ago
Read 2 more answers
From 1970 to 1980, the consumer price index (CPI) increased from 38.8 to 82.4. If a dozen eggs cost $0.25 in 1970 and the price
Ganezh [65]
Understanding the Question
This may not be the actual way that the US government prepares the CPI, but it will provide a comparison. 

You can set up a proportion. The base number for the CPI is 38.8 in 1970. That number (38.8) has more than doubled to get to 82.4, which also tells us that there was inflation. What your parents and grandparents bought in 1970 went to double the amount in 1980. Gasoline certainly did that.

Givens
CPI in 1970 = 38.8
CPI in 1980 = 82.4
Eggs 1970 =  0.25
Edgs 1980 = X

Formula substitution and solution
CPI 1970 / CPI 1980 = cost of eggs 1970 / cost of eggs 1980
38.8/82.4 = 0.25 / x Cross multiply
38.8 * x = 0.25 * 82.4
38.8 * x = 20.625
x = 20.628 /38.8
x = 0.53 dollars of 53 cents.

53 cents in 1980 which is slightly double as predicted.

Footnote
As a matter of interest, my wife tells me that eggs now cost about 3.58 where we live. That's almost 7 times as expensive as they were in 1980. Something to think about. By the way, the price quoted is in Canada.
7 0
3 years ago
Does the choice of the base affect the area of the triangle
icang [17]
Yes the base of a triangle greatly affects the area of the triangle. Half of the base times the height of a triangle equals its area, so therefore the base greatly affects it.<span />
3 0
3 years ago
Read 2 more answers
Which of the lines below have a negative slope
AlekseyPX

Answer:

answer A

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • What is the closest value of K?
    13·1 answer
  • A total of
    15·2 answers
  • 3 - (4m + 1) &gt; 5m - 25
    8·1 answer
  • A fingernail grows at an average rate of 1/8 inches per month. Rip Van Winkle, a character in a story by Washington Irving, slep
    12·1 answer
  • What is 9 times 9 could you answer this qustion
    9·2 answers
  • If x+y=8 find the value of y when x=-1
    5·2 answers
  • Someone help me please!!!!<br><br>hurry
    8·2 answers
  • Can someones please help me i dont get this
    11·1 answer
  • What is 3√-1 square root
    15·1 answer
  • A rental car company charges $90 per week and $0.22 per mile or $40 per week and $0.32 per mile. How many miles per week must a
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!