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3 years ago

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One cold night the temperature was 0 degrees at 8 p.m. The temperature dropped at a constant rate from 8 p.m. to midnight. At mi

dnight the temperature was −16.8 degrees. What was the temperature at 9 p.m.? Enter your answer into the box.

2 answers:

Thepotemich [5.8K]3 years ago

8 0

Answer:

u r smart

Step-by-step explanation:

aliina [53]3 years ago

5 0

Answer:

- 4.2 degrees

Step-by-step explanation:

If the drop was from temp 0 at 8 pm to temp -16.8 at midnight (4 hours later)

then,the drop is given by the rate: -16.8/4 = - 4.2 degrees per hour

Therefore, at 9 pm the temperature was:

0 degrees - 4.2 degrees = - 4.2 degrees

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DanielleElmas [232]

Answer:

If the stand-alone method would be used the startup would pay $60,000.00.

Step-by-step explanation:

The current cost for Spring Harbor Corporation is $180,000.00, but they use only 70% of the corporate suite.

If the start-up divide the corporate suite, they will use only 30%, but the total cost will be 180,000.00 + 20,000.00 = 200,000.00

We add the values because 180,000.00 counts the cost of maintenance paid before.

Using the percentages to find the cost for the start-up:

$200000*\frac{30}{100} = 60000$

So, $60,000.00 will be allocated to the start-up business.

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2 years ago

David rents DVDS from a company that changes a $7.00 monthly fee and $1.50 for each dvd rental. He ends up paying $20.50 for the

serious [3.7K]

1.5x + 7 = 20.5
First subtract 7 from both sides
1.5x = 13.5
Then divide both sides by 1.5
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Let me know in comments if you have questions

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2 years ago

Find the slope of the line whose equation is 8y-16x=12

Mice21 [21]

The formula for slope is y=mx+b
so if you re arrange the equation from 8y-16x=12
to 8y=16x+12
the slope will be the coefficient of x =16

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2 years ago

Please solve i will give brainiest 100 point question ****** do the whole page please need to pass or i will fail its my final t

dmitriy555 [2]

Answer:

1. Find the difference between the areas.

<u>Area of the small rectangle</u>: $(x+2)(x+7)=x^2+7x+2x+14=x^2+9x+14$

<u>Area of the big rectangle</u>: $(x+9)(x+11)=x^2+11x+9x+99=x^2+20x+99$

The difference is: $11x+85$

$( x^2+20x+99)- (x^2+9x+14)=x^2+20x+99-x^2-9x-14=11x+85$

2.

You can solve this question just by looking at the graph.

a) The height is 4 meters.

$f(d)=h=-2d^2+7d+4$

To find the height of the bleachers, we should consider the moment before the shoot, when the distance is equal to 0.

$f(0)=h=-2(0)^2+7(0)+4$

$h=4$

The height is 4 meters.

b) 9 meters.

For $d=1$

$f(1)=h=-2(1)^2+7(1)+4$

$f(1)=h=-2+7+4$

$h=9$

b) The ball travels 4 meters.

But to calculate it, it is when $h=0$

$0=-2d^2+7d+4$

Using the quadratic formula:

$d=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

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$d=\frac{-7\pm\sqrt{81}}{-4}$

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It will give us to solutions, once it is a quadratic equation, but we are talking about a positive distance.

$d=-\frac{1}{2} \text{ or }d=4$

3.

In this question, we have to find the area of the cylinder and the sphere.

From the information given, we have

a = 5mm and d = 5mm, therefore the radius is 2.5 mm.

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$V=\pi r^2h$

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$V_{s} \approx 65.4 \text{ m}^3$

The volume of the capsule is approximately $163.57 \text{ m}^3$

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3 years ago

A color printer will print 8 pages per minute.how many minutes will it take to print a report that has 136 pages?

murzikaleks [220]

17 minutes

136/8 = 17

4 0

2 years ago

Read 2 more answers