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Charra [1.4K]
3 years ago
6

A graduate statistics class is unhappy with the midterm grades. The majority of students scored 45 or below on a 100-point scale

, with just several students performing very well. Which type of distribution do the test scores represent?
a) nominal
b) negatively skewed
c) normal
d) positively skewed
Mathematics
2 answers:
Sunny_sXe [5.5K]3 years ago
7 0

Answer:

a for sure

Step-by-step explanation:

murzikaleks [220]3 years ago
4 0

Answer:OI>>>

Step-by-step explanation:

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Vignesh owns a cottage in the shape of a cube with each edge of length 26 feet. The roof is in the shape of a square pyramid and
3241004551 [841]

Answer:

Step-by-step explanation:

The shape of the cottage is cube

The edge of the cube is of length is 26ft

L_1 = 26ft.

The roof is in form of a square with with length 17ft.

L_2 = 17ft.

The roof is made up of 4 congruent isosceles triangles. Since the roof extends 2 ft over the edge of the cottage on each side, then the base of each triangle is 26 + 2 = 28 ft.

L_2 = 28 ft

Then, area of the roof is

A = 28²

A = 784 ft²

The triangular pyramid.

The triangular has four sides

Then,

Each of the area can be calculated using

A = ½ × b × h

Then, the four area of the triangular pyramid

A_total = 4 × ½ × b × h

A_total = 2 × b × h

The base of the triangle is 28ft.

The calculate the height of the triangle

Let's calculate the area of one of the triangles and then just multiply by 4. See attachment. Drop a perpendicular from the vertex of a triangle to its base. We now have the triangle broken up into two right triangles. The hypotenuse is 17 ft and one of the legs of the right triangle is 28 / 2 = 14 ft. Then the height is using Pythagoras theorem

a² = b² + c²

17² = 14² + h²

17² - 14² = h²

h² = 93

h = √93

Then, the area of the triangular pyramid is

A = 2 × b × h

A = 2 × 28 × √93

A = 540.04 ft²

Then, the area of the pyramid is approximately 540 ft², since the base of the pyramid cannot be seen.

But if we include the base, then, the total surface area is

A_t = A_triangular + A_base

A_t = 540 + 784

A_t = 1324 ft²

4 0
3 years ago
Um- help-.. please don’t comment if you don’t know
IRISSAK [1]

Answer:

Each point does NOT ALWAYS give the same amount of tickets.

11 point would most likely give 90 tickets.

Step-by-step explanation:

2 points give 18 tickets = 9 tickets per point

3 points give 27 tickets = 9 tickets per point

9 points give 72 tickets = 8 tickets per point

You can add the 2 point value with the 9 point values to find out many point it takes to get to 90 tickets.

18(2 tickets) + 72(9 tickets) = 90(11 tickets)

3 0
3 years ago
Read 2 more answers
Which function is even? Check all that apply.
iris [78.8K]

im pretty sure its

(A) y=cos x

(B) y=sec x

5 0
3 years ago
Find the measure of
ra1l [238]
What are you trying to measure?
6 0
3 years ago
9. Given: line c ll line d
ozzi

Answer:

x=38°

y=25°

z=117°

Step-by-step explanation:

Since line d is a line we can say that m<z=180 degrees -(38 degrees +25 degrees)

m<z=117°

Since line c ll line d

We can say that m<y=25°(Alternate interior angles)

We can say that m<x=38°(Alternate interior angles)

x=38°

y=25°

z=117°

3 0
3 years ago
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