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Rus_ich [418]
3 years ago
9

I need help with my homework please answer this correctly

Mathematics
1 answer:
disa [49]3 years ago
3 0
20+9=29
20-9=11
The answer is 20 and 9. Hope this helps.
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During the summer, Shane earns $450 every two weeks from being a lifeguard. He saves $125 from each paycheck. According to the t
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Answer:

5 to 18 ; 1 to 225

Step-by-step explanation:

BEACAUSE IT WAS FROM USA TEST PREP AND GOT IT RIGHT

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John is working part-time in an office. He works 30 hours per week and earns $600 each week. He currently has $2,700 in a saving
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The answer is 8 weeks.
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3 years ago
-5(9 - 6k) with k = -3
Jobisdone [24]

Answer:

-135

Step-by-step explanation:

-5(9 - 6k)

Let k = -3

-5 ( 9 - 6*-3)

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3 0
3 years ago
Which equation is represented by the intersection of the graphs below?<br><br> Image is above.
zaharov [31]

Option B:

sin x = 1 is the equation represented by the intersection of the graph.

Solution:

The graph lies between -1 and 1 in y-axis.

x-axis of the graph is all real numbers.

The graph oscillates between -1 and 1 and a shape that repeats itself every 2π units.

That is the domain of the graph is all real numbers.

The range of the graph is [-1, 1].

It clearly shows that, it is the graph of sinx = 1.

Hence sin x = 1 is the equation represented by the intersection of the graph.

Option B is the correct answer.

3 0
3 years ago
The Earth completely rotates on its axis once every 24 hours.
strojnjashka [21]

Answer:

A)

62/3 = 20.67 hours

B)

60.00 hours

C)

2074.29 miles

Step-by-step explanation:

If we assume the earth is a perfect circle, then in a complete rotation the earth covers 360 degrees or 2π radians.

A)

In 24 hours the earth rotates through an angle of 360 degrees. We are required to determine the duration it takes to rotate through 310 degrees. Let x be the duration it takes the earth to rotate through 310 degrees, then the following proportions hold;

(24/360) = (x/310)

solving for x;

x = (24/360) * 310 = 62/3 = 20.67 hours

B)

In 24 hours the earth rotates through an angle of 2π radians. We are required to determine the duration it takes to rotate through 5π radians. Let x be the duration it takes the earth to rotate through 5π radians, then the following proportions hold;

(24/2π radians) = (x/5π radians)

Solving for x;

x = (24/2π radians)*5π radians = 60 hours

C)

If the diameter of the earth is 7920 miles, then in 24 hours a point on the equator will rotate through a distance equal to the circumference of the Earth. Using the formula for the circumference of a circle we have;

circumference = 2*π*R = π*D

                         = 7920π miles

Therefore, the speed of the earth is approximately;

(7920π miles)/(24 hours) = 330π miles/hr

The distance covered by a point in 2 hours will thus be;

330π * 2 = 660π miles = 2074.29 miles

8 0
3 years ago
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