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IrinaVladis [17]
2 years ago
7

I’m confused on what to do.

Mathematics
1 answer:
IRISSAK [1]2 years ago
4 0

All you need to do is use your calculator to solve that equation. Just so you don't need to for just this one, here's the answer you should type into the box:

3/20

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N is a positive integer.<br> Explain why n(n-1) must be an even number.
svetoff [14.1K]
If N is a positive integer, it must be either even or odd. If N is odd, then N-1 will be even. If N is even, then N-1 will be odd. Either way, when you multiply n and n-1, one of those expressions is going to be an even number, and any number multiplied by an even number is an even number. Hope this helps! :)
4 0
3 years ago
Answer fast please and thanks!
Stella [2.4K]

Answer:

tan 30 = x / 15

General Formulas and Concepts:

<u>Trigonometry</u>

  • [Right Triangles Only] SOHCAHTOA
  • [Right Triangles Only] tanθ = opposite over adjacent

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify variables</em>

Angle θ = 30°

Opposite Leg = <em>x</em>

Adjacent Leg = 15

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Substitute in variables [tangent]:                                                                     tan 30 = x / 15

8 0
3 years ago
Read 2 more answers
Someone works in a grocery store and earns $7.20 per hour. The store will pay them an extra 5% per hour if she works on Saturday
siniylev [52]

Answer:

$7.20*(1.05)*5

$37.80

Step-by-step explanation:

4 0
2 years ago
Help! I cant solve this
KatRina [158]
In one month, there are on average 30 days.

So if he talks 135 minutes per month, he talks on average 135/30 minutes per day

135/30 = 4.5

So on average he talks to his grandfather for 4 minutes and 30 seconds a day.
5 0
3 years ago
Read 2 more answers
What is the approximate volume of the cylinder? Use 3.14 for п.
Veseljchak [2.6K]

<u>Given</u>:

Given that the radius of the cylinder is 4 cm.

The height of the cylinder is 9 cm.

We need to determine the volume of the cylinder.

<u>Volume of the cylinder:</u>

The volume of the cylinder can be determined using the formula,

V=\pi r^2 h

where r is the radius and h is the height of the cylinder.

Substituting π = 3.14, r = 4 and h = 9 in the above formula, we get;

V=(3.14)(4)^2(9)

V=(3.14)(16)(9)

V=452.16 \ cm^3

Thus, the volume of the cylinder is 452.16 cm³

Hence, Option B is the correct answer.

4 0
3 years ago
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