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3 years ago

Consider these sample means for the number of weekend hours spent studying for a Monday exam.

Mathematics

2 answers:

sertanlavr [38]3 years ago

6 0

Answer:

1--The variation in the sample means is less than 5.

3--The actual population mean most likely will be between 4 and 8.

4--The sample means can be used to make predictions about the population mean.

Step-by-step explanation: just did it!

Ronch [10]3 years ago

4 0

Answer:1, 3, and 4

Step-by-step explanation: I just did it

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Willis bought a gallon of paint.He painted a wall that is 9 feet high and 10 feet wide.Then he used he rest of the paint to pain

Otrada [13]

First you need to find the surface area of the wall that was painted, and then add the additional area in the hallway that was painted.

The wall that was painted was 9 feet by 10 feet, or 90 square feet. 90 square feet plus the additional 46 square feet in the hallway is 136 square feet, which is the total area that the paint covered.

Therefore the solution is 136 square feet.

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3 years ago

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A flower has ten pedals.During a storm,five of the pedals fall off.Write a decimal to show what part of the pedals is left

olga nikolaevna [1]

The answer is .5 meaning half (1/2) of the petals fell off.

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3 years ago

Graph each circle given below right the center and radius of each circle

expeople1 [14]

Answer:

Center: (-3,-2)

Radius: √6

The graph is attached.

Step-by-step explanation:

The equation of the circle has the form:

$(x -h)^{2}+(y-k)^{2}=r^{2}$

Where (h,k) is the point of the center of the circle and r is the radius of the circle.

The equation given in the problem is

$(x +3)^{2}+(y+2)^{2}=6$

Therefore:

h=-3

k=-2

The center is at (-3,-2)

And the radius is:

$r^2=6\\r=\sqrt{6}$

Then, you can graph it has you can see in the image attached.

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3 years ago

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What numbers do you need to determine the surface area of a right cone? ANSWERS: The radius of the base, r, and the altitude h.

tiny-mole [99]

Answer:

The Radius of the base, r, and the altitude h

Step-by-step explanation:

Surface area of a right cone

$a=\pi r\sqrt{h^{2}+r^{2} }$

R= Radius

H=Radius

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3 years ago

Jacob makes a scale drawing for a crate with a scale

olga55 [171]

Answer:

6 inches long and 4 inches wide

Step-by-step explanation:

The dimensions of the actual crate are 20 times those on Jacob's drawing. The dimensions on the builder's drawing are 1/10 of those, so (1/10)(20) = 2 times the dimensions on Jacob's drawing.

The dimensions on the builder's scale drawing are 6 inches long by 4 inches wide.

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2 years ago

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