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
Masja [62]
3 years ago
7

PLEASE help me with this algebra multiple choice question I have been stuck on and if possible, give an explanation:

Mathematics
2 answers:
igomit [66]3 years ago
4 0

Answer:

D

Step-by-step explanation:

First find the probability using the normal distirbution formula X - mean / standard deviation for both X = 350 and X =450 to get the values -1 and 1 so thi(-1) < P(Z) < thi(1) if you are familiar with normal distirbution table values you will calculate that the overall probability is 0.6827

knowing this we can roughly expect how much emergencies are in the response times by 0.6827 x 144 = 98

pav-90 [236]3 years ago
4 0

Answer:

D) 98

Step-by-step explanation:

Here we will use <em>Empirical formula</em> for solving this question.

Calculating: \frac{350-400}{50}=-1 and \frac{450-400}{50} =1

Since 68% of the data lies in the one standard deviation of the mean.

Also, there are 144 emergencies in the town. So,

0.68 × 144 = 97.92 ≈ 80

Thus, Option D is correct.

You might be interested in
If you could buy ice cream and watermelon together for $2.55. how much would each one cost individually​
frutty [35]

Answer:

$1.27 and the other is $1.28

Step-by-step explanation:

you would take $2.55 and divide by 2 because there are 2 items; ice cream and watermelon.

$2.55 / 2 is $1.27 a piece but that will leave 1 penny left so it would be added to either the watermelon or the ice cream. So one would be $1.27 and the other would be $1.28

3 0
4 years ago
A fruit punch recipe that serves 20 people calls for 32 fluid ounces of pineapple juice and 48 fluid ounces of orange juice. Mon
Hoochie [10]

Step-by-step explanation:

so the ratio of the recipe is 32/48 of pineapple juice and orange juice.

that can be simplified to the ratio of 2/3.

now, she has only 20 floz of pineapple juice.

20/x = 2/3

60/x = 2

60 = 2x

x = 60/2 = 30

she needs 30 floz of orange juice with the 20 floz of pineapple juice to maintain the prescribed ratio for fruit punch.

6 0
2 years ago
Read 2 more answers
What is the answer to x(X+2)
lesya692 [45]
After distribution, you should have x to the second power plus 2x
x^2 +2x
8 0
3 years ago
Read 2 more answers
Match each percent expression to its simplified form.
yulyashka [42]

Answer:

Step-by-step explanation:

1) 15% of 75 = (15/100) * 75 = 0.15*75 = 11.25

2) 7%  of 980 = 0.07 * 980 = 68.6

3) 45%of 62 = 0.45 * 62 =  27.9

4) 22% of 198 = 0.22 * 198 = 43.56

4 0
3 years ago
Read 2 more answers
Under what circumstances would you file form 1040a? form 1040?
dusya [7]
The 1040 can be used by the individual taxpayer to report all worldwide income from all sources plus take care of all of the ather amounts that you would not be able to enter on the 1040 a tax form.
4 0
3 years ago
Other questions:
  • An investment of $200 increases at a rate of 9.5% per year. What is the growth factor, b?
    8·1 answer
  • Figure A is a scale image of figure B
    7·1 answer
  • The following 5 questions are based on this information: An economist claims that average weekly food expenditure of households
    9·1 answer
  • What type of transformation does the arrow below depict?
    13·1 answer
  • Wrote a word problem that must be solved by using division. Include the equation and the solution and explain how to place the f
    15·2 answers
  • Ryo accidentally Ordered 240% as many eggs as his restraint needs what fraction of the number of eggs his restraint needs did ry
    7·1 answer
  • What is Simplify √ 320 .
    6·2 answers
  • The temps tire at 10 p.m in Michigan on January 2nd was -4.4 degrees . By 6am the next morning it had dropped 7.2 degrees . By 1
    8·1 answer
  • Help me please &gt;.&lt; It would help a lot
    15·2 answers
  • Round 508.0219 to the nearest hundredth
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!