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statuscvo [17]
2 years ago
8

The temperature, t, in Burrtown starts at 21°F at midnight, when h = 0. For the next few hours, the temperature drops 4 degrees

every hour.
Which equation represents the temperature, t, at hour h?

A. t = 4h + 21
B. t = –21h + 4
C. t = –4h + 21
D. t = 21h + 4
Mathematics
2 answers:
aleksandr82 [10.1K]2 years ago
8 0
C.
The starting temperature is 21 degrees, so this is the y-intercept.
deff fn [24]2 years ago
7 0
C.
The starting temperature is 21 degrees, so this is the y-intercept.

Since the temperature dropping, the slope of 4 is negative.

The result in slope-intercept form is -4h+21

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A car is traveling at a constant speed of 46 miles per hour. the formula for the distance traveled at the end of t hours is d=46
jonny [76]

d = 46t

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           d = 46(7)

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  • Finally, let's find "d" for 18 hours.

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Read 2 more answers
Bill buys and sells laptops. Last month Bill bought 50 laptops. He paid £400 for each laptop. He sold 40 of these laptops at a p
Ivenika [448]

Answer:

As Bill's sales is £25400, which is greater than £25000, he achieved his target.

Step-by-step explanation:

Cost of each laptop = £400

lets calculate for 40 laptops first

Given, he sold 40 of these at 30% profit

30% of cost price = 30% of  £400  = 30/100 * 400 = 120

Therefore, selling price of these laptops =  £400  +  £120 =  £520

Total sales generated from selling 40 of these laptop = 40*£520

= £520 =£20,800  

lets calculate for 10 laptops now

Given, he sold 10 of these at 15% profit

15% of cost price = 15% of  £400  = 15/100 * 400 = 60

Therefore, selling price of these laptops =  £400  +  £60 =  £460

Total sales generated from selling 10 of these laptop = 10*£460

= £4600

Total sales generated from selling all the 50 laptop =  

Total sales generated from selling 40 of these laptop + Total, sales generated from selling 10 of these laptop = £20,800  + £4600 = £25,400

Target for Bill = £25000

As his sales is £25400, which is greater than £25000, he achieved his target.

6 0
2 years ago
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