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EleoNora [17]
2 years ago
12

PLEASE HELPPPPPP!!!!!!!!!!!

Mathematics
2 answers:
gizmo_the_mogwai [7]2 years ago
8 0

Answer:

3.The angle is 24°

4.120°

Step-by-step explanation:

There are 360° in a complete revolution thus for 15 equally space spokes, the angle between every spoke is given by 360° ÷ 15 =24°

In a clock, a complete revolution yields 360°. For a 20 minutes turn, the minute hand will cover (360° ÷ 12) × 4 =120°

Aleks04 [339]2 years ago
4 0

<u>Answers</u>

1) 24°

2) 120°

<u>Explanation</u>

There are 15 spokes meaning we are going to divide one revolution by 15.

∴ 360/ 15  = 24°

The angle between any two spokes = 24°

Question 2

In an clock, the minate hand move 360° to make 60 minutes.

This means;

60 minutes ⇒ 360°

1 minute ⇒ 360/60

               ⇒ 6°

20 minutes ⇒  20 × 6°

                   ⇒  120°

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Step-by-step explanation:

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If you use your office computer 40 hours per week, and do not unplug the computer when it is not in use, how much carbon dioxide
dangina [55]
If you use a laptop:  9.25; a desktop with a CRT monitor:  55.51; a desktop with an LCD monitor:  46.26.

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6 0
3 years ago
Omar works as a tutor for $15 an hour and as a waiter for $7 an hour. This month, he worked a combined total of 83 hours at his
Alborosie

Answer: 8t+581

Step-by-step explanation:

<h3> The complete exercise is: "Omar works as a tutor for $15 an hour and as a waiter for $7 an hour. This month, he worked a combined total of 83 hours at his two jobs. Let "t" be the number of hours Omar worked as a tutor this month. Write an expression for the combined total dollar amount he earned this month."</h3><h3 />

Let be "t" the number of hours Omar worked as a tutor this month and "w" the number of hours Omar worked as a waiter this month.

Based on the data given in the exercise, you know that Omar worked a combined total of 83 hours this month.

Then, you can represent the number of hours he worked as a waiter this month with this equation:

w=83-t

Since he earns  $15 per hour working has a tutor and $7 per hour working as a waiter, you can write the following expresion to represent the total money earned:

15t+7w

Since w=83-t, you can substitute it into the expression and then simplify it in order to find the final expression that represents the total amount of money Omar earned this month.

This is:

15t+7(83-t)=15t+581-7t=8t+581

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