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
Vedmedyk [2.9K]
2 years ago
12

Assume that the mean length of a human pregnancy is 269 days. If​ 95% of all human pregnancies last between 249 and 289 ​days, w

hat is the standard deviation of the distribution of lengths of human​ pregnancies? What percent of human pregnancies are expected to last at least 287 ​days?
Mathematics
1 answer:
o-na [289]2 years ago
7 0

Answer:93% not sure

Step-by-step explanation:

You might be interested in
Ms.Cornick bought 6 new pens for $5.70. How much would it cost her to buy 11 pens at the same rate?​
UNO [17]

Answer:

about 11.50

Step-by-step explanation:

6 / 5.70 = 1.05

1.05 x 11

hope this helps

5 0
2 years ago
In one area, the lowest angle of elevation of the sun in winter is 27.5°. Find the minimum distance x that a plant needing full
Alex73 [517]

Answer:

The minimum distance x that a plant needing full sun can be placed from a fence that is 5 feet high is 4.435 ft

Step-by-step explanation:

Here we have the lowest angle of elevation of the sun given as 27.5° and the height of the fence is 5 feet.

We will then find the position to place the plant where the suns rays can get to the base of the plant

Note that the fence is in between the sun and the plant, therefore we have

Height of fence = 5 ft.

Angle of location x from the fence = lowest angle of elevation of the sun, θ

This forms a right angled triangle with the fence as the height and the location of the plant as the base

Therefore, the length of the base is given as

Height × cos θ

= 5 ft × cos 27.5° = 4.435 ft

The plant should be placed at a location x = 4.435 ft from the fence.

8 0
3 years ago
A horse travels 100 meters at a velocity of 30m/s W. How long does it take the horse to travel this distance?
Dafna1 [17]

The formula for finding time is the distance divided by the velocity.So the answer is 100÷30=3.3333...

6 0
3 years ago
If you borrow 421$ for nine years at an interest rate of 4% how much will you pay
satela [25.4K]
Interest = (Principal X rate X time)/100
Interest =421*9*4/100
Interest = 151.56 dollars
5 0
3 years ago
Help!!!! No Bad Answers Will Give brainiest!!
Alborosie

The domain the given graph is :

  • -12 <u><</u> x <u><</u> 13
6 0
2 years ago
Other questions:
  • Answer quickly, please
    8·1 answer
  • What is the gradient of the line 2y-8x =6
    14·2 answers
  • Answer before 1:00 i will mark you brainliest
    15·1 answer
  • How do I solve this? 408=1/2(b)(17)
    11·1 answer
  • What could be the dimensions with an area of 24 units
    6·1 answer
  • 1/4 + 1/2 + x = −3/4
    7·2 answers
  • A) Write a rule for a polynomial with left end up and right end up behavior, and has a y-
    13·1 answer
  • If the orginal quantity is 15 and the new quantity is 19 estimate the percent change of which of these is the best esitmate for
    13·2 answers
  • Please only answer if you know i've failed this test twice and i need help
    12·1 answer
  • This one as well, does anyone know the answer?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!