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
Gennadij [26K]
2 years ago
10

Mr. Moore's physics class built different-shaped parachutes to see which shapes were more effective. The students tested the par

achutes by dropping them
from a height of 30 feet and timing the fall. They calculated the summary below:
The students wanted to see what happens to their times when they drop the parachutes from 45 feet. They find that every drop is increased by 2.5 seconds.
Find the new mean and standard deviation.
O Mean, 3.1 seconds; standard deviation, 0.6 second
O Mean, 5.6 seconds; standard deviation, 3.1 seconds
O Mean, 5.6 seconds; standard deviation, -1.9 seconds
O Mean, 8.1 seconds, standard deviation, 0.6 second

Mathematics
1 answer:
antoniya [11.8K]2 years ago
7 0
Your answer is the 5.6 seconds
You might be interested in
Please help, will give you brainliest
muminat

Answer:

1050

Step-by-step explanation:

it is 700/2 ×3=2100/2=1050

8 0
2 years ago
Read 2 more answers
What is the initial value of y= 8x+7
allochka39001 [22]

Answer:

7

Step-by-step explanation:

The initial value is another name for the y-intercept. This equation is written in point slope form (y=mx+b). And before you think y-intercept means y, right? No that is incorrect, I got that wrong in the beginning too ;)

y=mx+b

y=8x+7

b in the point slope form equation is always the initial value or y-intercept or whatever people call it. So what substitutes b out here? 7. So 7 is the initial value!

:) Hope you understand now! Have a good day!

8 0
2 years ago
harriet is cultivating a strain of bacteria has doubled by the end of every second hour. how many bacteria will harriet have in
Black_prince [1.1K]

Answer:

n2^3 bacteria, n being the initial population.

Step-by-step explanation:

compound growth equation: P=n2^t

P is total population

n is initial population

t is time

since it doubles every second hour, and there are 6 hours

6hours/2hours= doubles 3 times, thats why t=3.

7 0
2 years ago
Help me please!!!! If you do this correct, I will mark you the brainliest and this question is worth 50 points so please help me
Sindrei [870]

Answer:

B and C .. thhx

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
ASAP!!! Please answer the FIRST TWO and LAST TWO, ignore the answer asking for a graph.
ch4aika [34]

Answer:

Step-by-step explanation:

6 0
2 years ago
Other questions:
  • In the equation 6x-2 = -4x + 2, Spencer claims that the
    7·2 answers
  • If Aldo puts 400 into a savings account that paid an interest rate of 5.4 percent What was the total amount in his account at th
    14·1 answer
  • How many solutions does the system of equations have? x - 3y = 15 and 3x - 9y=45
    10·1 answer
  • Find the surface area of the pyramid. The faces of the triangular pyramid are equilateral triangles 34.6 mm 40 mm 40 mm The surf
    8·1 answer
  • PLEASE HELP 10 BRAINLY POINTS<br> Find SA for this triangular prism: DON'T FORGET TO SHOW ALL WORK
    14·1 answer
  • 5
    14·1 answer
  • Solve for x.<br> -9x + 2 &gt; 18 OR 13r + 15 &lt; -4
    8·1 answer
  • carol is making baby blankets for her daughters twins. If one blanket needs 43/4 yd of fabric, how much fabric does carol need f
    7·1 answer
  • The pie chart is best because pie charts are a good way to portray percentage based data. B. The Pareto chart is best because it
    12·1 answer
  • Una compañía distribuidora de software puede vender 1200 unidades por semana cuando el precio es de $350 pesos. Además se determ
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!