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djverab [1.8K]
3 years ago
5

Overnight, the temperature dropped 1.3 degrees every hour. How many hours did it take the temperature to drop 7.8 degrees?

Mathematics
1 answer:
Mariana [72]3 years ago
4 0

Answer:

what was the temperature at first?

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an architect created a scale model of a building. the length of the model is 15 inches. the scale factor used to create the mode
navik [9.2K]
The length of  model is ......15 inch
if the scale factor is 1/20
it means 1/20=15/h
h=12*15=300
4 0
3 years ago
Select all equations where r=3 is a solution
belka [17]

Answer:

the first equation

Step-by-step explanation:

5 0
2 years ago
Pete is saving up for a bike and knows he'll need to spend at least $220 to get the one he wants. He saves $45 each month. How l
prisoha [69]
220= 45*x. I hope you are satisfied with my answer.
4 0
3 years ago
Find the percent of the area under the density curve where x is more than 3. <br>​
Gekata [30.6K]

Answer:

The percent of the area under the density curve where x is more that 3 is 25 %.

Step-by-step explanation:

Since the density curve is a linear function, the area under the curve can be calculated by the geometric formula for a triangle, defined by the following expression:

A = \frac{1}{2}\cdot (x_{f} - x_{o})\cdot  (y_{f}-y_{o}) (1)

Where:

A - Area, in square units.

x_{f} - x_{o} - Base of the triangle, in units.

y_{f} - y_{o} - Height of the triangle, in units.

The percent of the area is the ratio of triangle areas under the density curve multiplied by 100 per cent, that is:

x = \frac{\frac{1}{2}\cdot (5-3)\cdot (0.25) }{\frac{1}{2}\cdot (5-1)\cdot (0.5) }\times 100\,\%

x = 25\,\%

The percent of the area under the density curve where x is more that 3 is 25 %.

7 0
3 years ago
Please help me on this problem​
AleksandrR [38]
Find the perimeter of the scale artwork
P=2(l+w)
P=2(2.5+1.75)
=2(4.25)= 8.5 in

1 in = 0.5 ft
8.5in = 0.5(8.5)
=4.25ft = 51 in
the actual perimeter is 51 in or 4.25 ft
7 0
3 years ago
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