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Vedmedyk [2.9K]
3 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]3 years ago
7 0

Answer:93% not sure

Step-by-step explanation:

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You work at a car dealership and are told that a certain car is to sell for $12,080, which will include financing for 5 years (6
Snowcat [4.5K]
First we have to subtract the down payment from the whole sum:
$12,080 - $500 = $11,580
Then we will divide the rest by 60 ( we have 60 equal monthly payments ).
$11,580 : 60 = $193
Answer:
Monthly payment is $193. 
5 0
3 years ago
PLEASE HELP!!!
xeze [42]
An approximate number, that can be calculated mentally, is by using the rule of 72:  Divide 72 by the interest in % to give the number of years needed to double the money.
In this case, the approximate number of years
n= 72/4=18 years (approximately)

Precise value by compound interest formula:
2P=P*(1.04)^n
=>
1.04^n=2
take logs on both sides
nlog(1.04)=log(2)
n=log(2)/log(1.04)=17.673 years
4 0
4 years ago
From the airport hanger H, an areoplane A is 18km away on the bearing of 115° while another aeroplane B is 29km away on a bearin
maks197457 [2]

The difference in distance between Aero plane A and B is; 34.67 km

<h3>How to calculate bearing?</h3>

To get the bearing;

∠H = (115 - 90) + (270 - 203)

∠H = 92°

Then, we will use cosine rule to get the distance between both Planes A and B.

d_ab = √(18² + 29² - 2(18 * 29) * cos 92)

d_ab = √(324 + 841 + 36.435)

d_ab = 34.67 km

Read more about bearing at; brainly.com/question/22518031

#SPJ1

6 0
2 years ago
PLEASE HELP ASAP!!!!!!
Andru [333]

Answer:

it's C ;)) maybe i guess-

Step-by-step explanation:

7 0
3 years ago
Find the value of x in the picture please
jolli1 [7]

Answer:

The value of x is 4

Step-by-step explanation:

we know taht

<u>The intersecting chords theorem</u>  states that the products of the lengths of the line segments on each chord are equal.

so

In this problem

(12)(x)=(8)(x+2)

solve for x

12x=8x+16

12x-8x=16

4x=16

x=4

7 0
4 years ago
Read 2 more answers
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