3 years ago

Describe what a frequency table is what is used for

1 answer:

3 0

Answer:

A frequency table is records the number of observations falling in each interval. They are useful for analyzing data and for screening data for data entry errors.

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Is the following number rational or irrational 0.5555?

4vir4ik [10]

Answer:

Simple.

The decimal 0.5555 is a rational number. It's a terminating decimal, since it doesn't end with an ellipsis.

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3 years ago

A group of 55 friends meets for lunch. They greet each other by exchanging fist bumps. How many fist bumps are exchanged if each

ANTONII [103]

55 * 54 = 2,970, hope this helps.

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4 years ago

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Is (0,3) a solution to the equation y = x + 3?

Anna11 [10]

Yes,
y=x+3
if x=0,
y=0+3
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therefore (0,3) is a solution

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3 years ago

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A 15 ft. telephone pole has a wire that extends from the top of the pole to the ground. The wire and the ground form a 42° angle

Lorico [155]

Answer:

Correct choice is A

Step-by-step explanation:

Consider right triangle ABC formed by the telephone pole (side AB) and ground (side BC). In this triangle AC is the length of the wire, BC is the distance from the base of the pole to the spot where the wire touches the ground and AB=15 ft, ∠ACB=42°.

Then

$\sin 42^{\circ}=\dfrac{AB}{AC}\Rightarrow AC=\dfrac{AB}{\sin 42^{\circ}}=\dfrac{15}{\sin 42^{\circ}}\approx 22.4\ ft.$
$\tan 42^{\circ}=\dfrac{AB}{BC}\Rightarrow BC=\dfrac{AB}{\tan 42^{\circ}}=\dfrac{15}{\sin 42^{\circ}}\approx 16.7\ ft.$

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3 years ago

SOLVE FOR X. pls i need help

Lyrx [107]

X=8
Set up proportions would give you: 10/3x+1 = 22/7x-1
With that in mind, cross multiply, which would give you: 10(7x-1) = 22(3x+1).
Turns into: 70x -10 = 66x+22. Then just solve for x

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3 years ago