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malfutka [58]
3 years ago
10

Please help, 20 points

Mathematics
1 answer:
nlexa [21]3 years ago
7 0

Answer:

25x

Step-by-step explanation:

Perimeter is all sides added up

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A line passes through (2, −1) and (4, 5).
liberstina [14]
The answer to the first question is B
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3 years ago
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Can I get some help on these two
tia_tia [17]

9514 1404 393

Answer:

  cone: 138.16 in²

  pyramid: 352 m²

Step-by-step explanation:

Use the appropriate formula from your list of area and volume formulas.

<u>Area of a Cone</u>

  A = πr(r +h) . . . . . where r is the radius and h is the slant height

The radius is half the diameter, so is 4 inches.

  A = π(4 in)(4 in + 7 in) = 44π in² ≈ 138.16 in²

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<u>Lateral Area of a Square Pyramid</u>

  A = 2sh . . . . . where s is the side length of the base and h is the slant height

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2 years ago
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Anna [14]

Answer:

a - (6-9)

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Step-by-step explanation:

3 0
2 years ago
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Will the square of a negative number always be positive? Explain why.
qwelly [4]

the square of a negative number always be positive

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the cube of a negative number always be positive

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Select the scenario below that demonstrates sampling bias. Select the correct answer below:
Vsevolod [243]

Answer:

C. Elizabeth wants to estimate the mean vacation days of coworkers at her company. She collects data by selecting a random group of coworkers within her department.

Step-by-step explanation:

Sampling Bias is case, in which some section of population have higher or lower chance of being selected in sample than others.

'Elizabeth wants to estimate the mean vacation days of coworkers at her company. She collects data by selecting a random group of coworkers within her department'. This case is of Convenience Sampling, where person selects sample only as per his/ her convenience.

Elizabeth has conveniently chosen sample workers from her department, so they have higher chance of being in sample, others have lesser chance.  Hence, this is Sampling Bias

7 0
3 years ago
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