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
Solnce55 [7]
3 years ago
10

1. When Aaron runs the 400 meter dash, his finishing times are normally distributed with a mean of 80 seconds and a standard dev

iation of 2.5 seconds. Using the empirical rule, determine the interval of times that represents the middle 99.7% of his finishing times in the 400 meter race.
​
Mathematics
1 answer:
Alex Ar [27]3 years ago
6 0

Answer:

(72.5,87.5)

Step-by-step explanation:

You might be interested in
Write the equation of the line that passes through the points (4, -3) and
vivado [14]

Answer:

y+3=-5(x-4)

Add 20 characters to explain the point

8 0
3 years ago
Janine is saving money to buy a car. She has a total of $1400 left to save, and she plans to save a certain percentage of $1400
shusha [124]

Answer:

August=$350

September=$560

October=$210

November= $280

Step-by-step explanation:

Total amount left to save $1400.

We calculate the amount save each mount since we are already given the percentages.

For the month of August she saves 25% of $1400, we convert the percentage to equivalent cash

\frac{25}{100}*1400\\=350

for the month of August, she saved $350,

Next For the month of September she saves 40% of $1400, we convert the percentage to equivalent cash

\frac{40}{100}*1400\\=560

for the month of September, she saved $560,

Next For the month of October she saves 15% of $1400, we convert the percentage to equivalent cash

\frac{15}{100}*1400\\=210

for the month of October, she saved $210,

total amount saved by October = $350+$560+$210=$1120

Amount saved by November=1400-1120=$280

5 0
3 years ago
4-7x +3 +5x pleas help thanks
meriva

Answer:

7−2x

Step-by-step explanation:

1 Collect like terms.

(4+3)+(-7x+5x)

(4+3)+(−7x+5x)

2 Simplify.

7-2x

7−2x

3 0
3 years ago
Read 2 more answers
ellen has a coupon for 1.55 off a loaf of bread. the regular price of the bread is 4.63. the loaf is cut into 14 slices. what is
AlexFokin [52]

Answer:

$0.22

Step-by-step explanation:

Ellen has a coupon of 1.55 off a loaf of bread

The regular price of the bread is 4.63, the loaf is cut into 14 slices

Therefore if she uses her coupon the price per slice can be calculated as follows

= 4.63-1.55

= 3.08

3.08/14

= 0.22

Hence the price is $0.22

3 0
3 years ago
Please help. thank so much !!
DanielleElmas [232]
1
-
2



Put it like that and there’s your constant
4 0
3 years ago
Other questions:
  • Graphing points for equations F (x)=1/2 (x)+8
    12·1 answer
  • Which is 3 groups of 5
    10·1 answer
  • You randomly choose one paper clip from a jar. In the jar there are 6 green, 3 white, 4 red, 2 blue, and 5 yellow paper clips.
    9·2 answers
  • Which number is IRRATIONAL?<br> A) 1 <br> B) 125 <br> C) 18<br> 2<br> 3<br> D) <br> 9.4
    15·1 answer
  • Use your calculator to find the value of each trig function below. Round to the tenth place.
    10·1 answer
  • Each student wrote a two-step equation. Peter wrote the equation 4x-2=10, and Andres wrote the equation 16x-8=40. The teacher lo
    5·1 answer
  • Which pairs are like terms in the expression below? Select all that apply.
    11·2 answers
  • 1/3 + 1/4<br> help please
    10·1 answer
  • What is 3/16= c-7/8 please answer
    9·2 answers
  • 19. Choose the repeating decimal that is equal to
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!