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
ioda
3 years ago
10

A boat leaves the dock and travels 9 miles due south, then 12 miles due west.

Mathematics
1 answer:
loris [4]3 years ago
4 0
The answer would be A. 15mi
You might be interested in
Which distribution is used to test the claim that women have a higher mean resting heart rate than men?
xeze [42]

This question is incomplete, the complete question is;

Assume that two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Which distribution is used to test the claim that women have a higher mean resting heart rate than men?

A.t

B.F

C.Normal

D. Chi-square

Answer:

A) t  test

Step-by-step explanation:

A t-test uses sample information to assess how plausible it is for the population means μ1​ and μ2​ to be equal.

The formula for a t-statistic for two population means (with two independent samples), with unknown population variances shows us how to calculate t-test with mean and standard deviation and it depends on the assumption of having an equal variance or not.

If the variances are assumed to be not equal,

he formula is:

t =  (bar X₁ - bar X₂) / √( s₁²/n₁ + s₂²/n₂ )

If the variances are assumed to be equal, the formula is:

t =  (bar X₁ - bar X₂) / √ (((n₁ - 1)s₁² + (n₂ - 1)s₂²) / (n₁ + n₂ - 2)) ( 1/n₁ + 1/n₂)

it called t-test for independent samples because the samples are not related to each other, in a way that the outcomes from one sample are unrelated from the other sample.

hence option A is correct. t test

4 0
3 years ago
Amy has 20 coins in her bank. The coins are all dimes and quarters. The total amount of money in her bank is $4.25 how many of e
solong [7]
16 qauters, 3 nickels, and 1 dime.
6 0
3 years ago
What is the equation for the locus of points 10 units from the origin?
Lesechka [4]

Answer:

d or b no a tho

Step-by-step explanation:

8 0
3 years ago
Round 101 to the nearest ten
DENIUS [597]
100 is 101 to the nearest ten
6 0
3 years ago
Read 2 more answers
A bolt has 16-1/2 turns per inch. How many bolts would be in 2-1/2 inches?
ohaa [14]

Answer:

41 1/4

Step-by-step explanation:

Change 16  1/2 to a mixed number

16 1/2 = (2*16+1)/2 = 33/2

Change 2 1/2 to a mixed number = (2*2+1)/2 = 5/2

Multiply the turns per inch by the inches

33/2 * 5/2 =165/4

Change this back to a mixed number

4 goes into 165 41 times

41*4 = 164   there is 1 left over

41 1/4

6 0
3 years ago
Read 2 more answers
Other questions:
  • Determine the unknown measures of the triangle shown. Round to the nearest tenth, if necessary
    15·1 answer
  • Polynomial is a monomial , binomial, trinomial, or none of these. 6x
    6·1 answer
  • Factor Completely<br> 8x^2-8xy-6y^2
    12·1 answer
  • 2. which number is between 3 and 4 on a
    12·2 answers
  • Which of the following functions is graph below ​
    6·1 answer
  • What is the point-slope form of a line with slope 3 that contains the point
    7·1 answer
  • What number multiplied by the expression 5 x 10 to the third power is equivalent to the expression 5 x 10 to the sixth power?
    14·1 answer
  • The length of a river is 480km. What is its length on a map with a scale 1 : 5,000,000?
    6·1 answer
  • I need help please, i need the answer now!
    14·1 answer
  • Sophie Ruth is eating a 50-gram chocolate bar that contains 30%percent cocoa.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!