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scZoUnD [109]
3 years ago
8

A hockey puck travels at a constant speed of 20 m/s what is the speed in miles per hour

Mathematics
1 answer:
Aleksandr [31]3 years ago
4 0
YAY FREE POINTS THANKS SO MUCH!!!
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Write these numbers in expanded form 2,897,926
mezya [45]

Answer:

2,000,000 + 800,000 + 90,000 + 7,000 + 900 + 20 + 6

Step-by-step explanation:

8 0
3 years ago
A college student is interested in testing whether business majors or liberal arts majors are better at trivia. The student give
attashe74 [19]

Answer:

There is no significant difference between the two averages at 5% level

Step-by-step explanation:

Given that a a college student is interested in testing whether business majors or liberal arts majors are better at trivia.

The student gives a trivia quiz to a random sample of 30 business school majors and finds the sample’s average test score is 86. He gives the same quiz to 30 randomly selected liberal arts majors and finds the sample’s average quiz score is 89

Thus he has done a hypothesis testing for comparison of two means of different subjects.  n =30

H_0: Mean of business majors = Mean of liberal arts majos\\H_a:Mean of business majors \neq  Mean of liberal arts majos

Since which is better is not claimed we use two tailed test here

We find that p value = 0.0524 >5% our alpha

Since p >alpha, we find that there is no significant difference between the averages of these two groups and null hypothesis is accepted

4 0
3 years ago
Identify the lateral area and surface area of a regular square pyramid with base edge length 5 in. and slant height 9 in.
Galina-37 [17]
Note that a squared pyramid has a square base & 4 equal triangles.
To find the lateral the lateral area you calculate the area of the 4 equal triangles  and to find the surface area (total Area) you add the area of the base:

Area of each triangle = side (5) x slant (9) and you divide by 2

==>Aera of 1 triangle = (9x5)/2 = 45/2 & for the 4 triangles

Lateral area = (45/2) x 4 = 90 in²

Now the base area (square) = 5 x 5= 25 in²

so the surface area = 90+25 = 115 in² (answer a)
7 0
2 years ago
Factorizar o descomponer en de FACTORES
Charra [1.4K]
Not sure if you’re speaking Spanish or not but yes
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2 years ago
Identify which angle it is
NISA [10]

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a. acute

b. right angle

c. acute

d. right angle

19. equilateral triangle

7 0
2 years ago
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