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Anarel [89]
3 years ago
6

Can someone help me?

Mathematics
2 answers:
ICE Princess25 [194]3 years ago
7 0

Answer: $25

Step-by-step explanation:

1: 0.18 * ? = 4.50

2: ? = $4.50 / 0.18

3: ? = $25

Ivenika [448]3 years ago
3 0

Answer:

18

Step-by-step explanation:

Hope this helps!

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Find the volume of this square<br> based pyramid.<br> 5 ft<br> 6 ft<br> [ ? jft
artcher [175]

Answer:

v=50

Step-by-step explanation:

use the formula V=A(h/3), where V is the volume and A is the area of the base. a=5 h=6 5×6=30 5×3=15 30+15=45 45 rounded to neared whole number which is 50

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3 years ago
How to convert the repeating nonterminating decimal to a fraction 0.1515
Ipatiy [6.2K]
The answer to the question

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3 years ago
On a scale drawing of a museum to water fountains are 10 inches apart. the actual distance between them is 400 ft. on the same d
KatRina [158]

400 / 10 = 40

 so every 1 inch = 40 feet


3.125 * 40 = 125 feet between the exhibits



please mark brainliest


7 0
3 years ago
You plan to conduct a survey to find what proportion of the workforce has two or more jobs. You decide on the 95% confidence lev
Vikentia [17]

Answer:

865

Step-by-step explanation:

We have that in 95% confidence level the value of z has a value of 1.96. This can be confirmed in the attached image of the normal distribution.

Now we have the following formula:

n = [z / E] ^ 2 * (p * q)

where n is the sample size, which is what we want to calculate, "E" is the error that is 2% or 0.02. "p" is the probability they give us, 5 out of 50, is the same as 1 out of 10, that is 0.1. "q" is the complement of p, that is, 1 - 0.1 = 0.9, that is, the value of q is 0.9.

Replacing these values we are left with:

n = [1.96 / 0.02] ^ 2 * [(0.1) * (0.9)]

n = 864.36

865 by rounding to the largest number.

3 0
3 years ago
Find the total area for the regular pyramid.
hram777 [196]

Answer:

  • Option B

Step-by-step explanation:

Given is the hexagonal pyramid.

We know the radius of the base is same as its side.

<u>Find the base area:</u>

  • A = 3√3/2a²
  • A = 3√3/2*6² = 54√3

<u>Given the height and radius, find the side of the lateral triangular faces:</u>

  • \sqrt{8^2+6^2} =\sqrt{100} =10

Each of 6 triangles have sides 10, 10 and 6 units.

<u>Find the area using heron's formula:</u>

  • s = P/2 = (10*2 + 6)/2 = 13
  • s - a = s - b = 13 - 10 = 3
  • s - c = 13 - 6 = 7
  • A = \sqrt{s(s-a)(s-b)(s-c)} =\sqrt{13*3*3*7} =3\sqrt{91}

<u>Total surface area:</u>

  • S = 6*3\sqrt{91}+54\sqrt{3}  =18\sqrt{91}+54\sqrt{3}

Correct choice is B

3 0
2 years ago
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