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Sphinxa [80]
3 years ago
8

Davie and Horatio are riding their motorbikes on a scenic tour that is 80 miles long. Davie rides at 20 miles per hour and leave

s 90 minutes before Horatio. How fast must Horatio ride to finish at the same time as Davie?
Mathematics
2 answers:
ki77a [65]3 years ago
7 0
80 divided by 20=4
90 divided by 4
22.5
Ugo [173]3 years ago
4 0

80 divided by 20=4

90 divided by 4

22.5

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Find the average value of f(x)=e2x over the interval [2, 4].
shusha [124]
<h2>Option B is the correct answer.</h2>

Step-by-step explanation:

We need to find average value of e^{2x} in [2,4]

Area of e^{2x} in [2,4] is given by

                  \int_{2}^{4}e^{2x}dx=\frac{1}{2}\times \left [ e^{2x}\right ]^4_2\\\\\int_{2}^{4}e^{2x}dx=\frac{1}{2}\times(e^8-e^4)=1463.18

Area of e^{2x} in [2,4] = 1463.18

Difference = 4 - 2 = 2

Average value = Area of e^{2x} in [2,4] ÷ Difference

Average value = 1463.18 ÷ 2

Average value = 731.59

Option B is the correct answer.

5 0
3 years ago
Which expression is equivalent to (0.5n−0.3)−(0.8n−0.9)?
Bezzdna [24]

Answer:

-0.3n + 0.6

Step-by-step explanation:

if we write out the entire expression we have:

0.5n - 0.3 - 0.8n + 0.9 (two negative signs create a positive sign)

then we add and subtract

and receive

-0.3n + 0.6

7 0
3 years ago
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Is 4:5 (4/5) less, or greater than 19:30 (19/30)?
liberstina [14]
4/5 is greater because when you times it by 6 the numerator becomes 24 therefore it is greater
6 0
3 years ago
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Please explain how to do this question ;^;
Elena-2011 [213]
I need to know which question it is though
8 0
3 years ago
Helicopters can land on circular pads. The area of a landing pad is 1,962.5 square feet. What is the radius of the pad? Use 3.14
notsponge [240]

Answer:

25 ft

Step-by-step explanation:

The area of this landing pad is 1,962.5 ft², which equals πr².

We solve this equation for r²:

       1962.5 ft²

r² = -----------------  =  625 ft²

             3.14

Taking the square root of both sides, we get:

r = √(625 ft²) = 25 ft

The radius is 25 ft.

5 0
3 years ago
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