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
charle [14.2K]
3 years ago
11

A small sample difference of means test requires that we can assume the variances of the two variables (for each group) are appr

oximately equal.
a. True
b. False
Mathematics
1 answer:
Serga [27]3 years ago
3 0
B. False is the right answer I believe!
You might be interested in
BRAINLIEST!!PLEASE HELP ME!!
zepelin [54]
The oldest age pat could be ia 10.10 times 2 equals 20.20 plus 5 is 25 .
5 0
3 years ago
The fan cost index represents the cost of four average price tickets
777dan777 [17]

9514 1404 393

Answer:

  • soccer: $50.31
  • hockey: $57.78

Step-by-step explanation:

Let s represent the FCI for soccer. The given values tell us ...

  s + (s +7.47) = 108.09

  2s = 100.62 . . . . . . . . . . subtract 7.47

  s = 50.31

  s+7.47 = 57.78

The FCI for soccer was $50.31; the FCI for hockey was $57.78.

8 0
2 years ago
Guys!! anyone can help me solve this geometry problem?<br>What is the area of this triangle?
NeX [460]

Answer:

10657.5

Step-by-step explanation:

<h2>Long way that is unnecessarily long</h2>

We can start by finding the area of the larger triangle. Using the Pythagorean theorem, we can say that 251²-105²=the bottom side², and  251²-105²=51976, so the bottom side of the larger triangle is √51976 , or approximately 228. Then, the area of the larger triangle is √51976 * 105/2 = 11969 (approximately). Then, the area of the smallest triangle (the largest triangle - the one that we're trying to find the area of) is 105*(√51976-203)/2 = approximately 1312. Then, subtracting that from the total area, we get (√51976 * 105 -  105*(√51976-203))/2 = 105*203/2 = 10657.5

<h2>Short way</h2>

ALTERNATIVELY, upon further review, we can just see that the height is 105 and the base is 203, so we multiply those two and divide by 2, as is the formula for the area of a triangle, to get 10657.5

3 0
3 years ago
the length of the shadow of a pole on level ground increases by 90m when the angle of elevation of the sun changes from 58 degre
Anarel [89]

Answer:

The height of the pole is 167 m

Step-by-step explanation:

The given parameters are;

Increase  in the length of the shadow = 90 m

Initial angle of elevation of the Sun = 58°

Final angle of elevation of the Sun = 36°

We have a triangle formed by the change in the length of the shadow and the rays from the two angle of elevation to the top of the pole giving an angle 22° opposite to the increase  in the length of the shadow  

We have by sin rule;

90/(sin (22°)  = (Initial ray from the top of the pole to the end of the shadow's length)/(sin(122°)

Let the initial ray from the top of the pole to the end of the shadow's length = l₁

90/(sin (22°)  = l₁/(sin(122°)

l₁ = 90/(sin (22°) ×(sin(122°) = 283.3 m

Therefore;

The height of the pole = 283.3 m × sin(36°) = 166.52 m

The height of the pole= 167 m to three significant figures.

3 0
3 years ago
Read 2 more answers
Write −0.312 as a fraction in simplest form.
ZanzabumX [31]

Answer:

-39/125

needs more characters

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which is equivalent to 4 square root 9^1/2^?
    13·1 answer
  • An athlete with mass m running at speed v grabs a light rope that hangs from a ceiling of height H and swings to a maximum heigh
    6·1 answer
  • Pleasee help me in this
    5·2 answers
  • What is the exact area of a circle whose diameter is 14 cm?
    13·1 answer
  • Simplify -4(x-5)+3(9-7)
    7·1 answer
  • . (02.05 MC) Side AB = 5, side BC = 6, side DE = 5, and side EF = 6. What additional information would you need to prove that ΔA
    12·1 answer
  • A necklace costs £900. Work out the price after a 2% price increase.
    9·2 answers
  • Manuel até 1/3 crackers. His brother ate 1/4 crackers. There are 5 crackers left. How many crackers were there from he beginning
    6·1 answer
  • Need help fast...
    6·1 answer
  • The price of a t-shirt is $50.00. If you buy 4 shirts, you will get 10% discount. How much will the discount be if you buy 8 shi
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!