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Genrish500 [490]
3 years ago
5

In the first 120 miles over 240 mile journey a truck driver maintained an average speed of 50 mph what was his average featuring

the next 120 miles if the average speed of the entire trip with 60 mph
Mathematics
2 answers:
Keith_Richards [23]3 years ago
3 0
The correct answer is 70 MPH because when 50 and 70 are added together and divided by 2, you get 60.
julsineya [31]3 years ago
3 0
The average speed over the entire trip was 60 mph, which must equal the distance traveled (240 miles) times the elapsed time.  Dividing  60 mph into 240 miles gives us the elapsed time:  (240 miles) / (60 mph) = 4 hours total.

Next:  determine the length of time required to drive the first 120 miles at 50 mph.  It is (120 miles) / (50 mph), or 2.4 hours.

Next, find the length of time required to drive the second 120 miles.  It is 4 hours less 2.4 hours, or 1.6 hours.

Lastly, find the average speed over which the second 120 miles were covered in 1.6 hours:

average speed (2nd 120 miles) = (120 miles) / (1.6 hours) = 75 mph.
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The value of 1.7y+37 is 14 less than the value of 9.3y–25
Alinara [238K]

Answer: Yes, it is less than, as the value of the first equation is 14, while the second equation is 100.8

Step-by-step explanation:

1.7y + 37 = 14...........equation 1

9.3y - 25 = ?............equation 2

Find the value of y by subtracting 37 from both sides of equation 1

1.7y +37 -37 = 14 - 37

1.7y = -23

Divide both sides by 1.7

y = 13.53

Insert the value of y into equation 2

9.3 (13.53) - 25

125.83 -25

=100.8

5 0
3 years ago
Three functions are given below: f(x), g(x), and h(x). Explain how to find the axis of symmetry for each function and rank the f
Anastaziya [24]
<span>three functions are
f(x) = 3(x + 4)^2 + 1
g(x) = 2x^2 - 16x + 15
h(x) = a(x - 1) - 3
Axis of symmetry for f(x) is x=-4 For g(x)
by taking the derivative
g'(x) = 4x - 16
= 4(x - 4)
Axis of symmetry for g(x) is x=4
Axis of symmetry for h(x) is x=1
hope it helps
</span>
3 0
4 years ago
At a conference, the organizer determined that 32% of the attendees were between the ages of 18 and 29. Since there were 216 att
Lisa [10]

Answer:

the total attendance is:409

Step-by-step explanation:

hopes this helps!

6 0
3 years ago
Read 2 more answers
helppppPPPppppPPppppppPppppPPpppPPPPpppPPPpppPppppPPPpPPPpppp please help do not look this up thank you
zhannawk [14.2K]

Answer:

Part A:

The probability of hitting the black circle is the ratio between the area of the black circle and the white square (including the black circle)

Area of circle:

Ac = pi x r^2 = pi x (2/2)^2 = pi (diameter = 2)

Area of square:

As = side^2 = 11^2 = 121 (side = 11)

=> P = pi/121 = ~0.025 (P = 0.025 < 0.5 => P is closer to 0 than 1)

Part B:

The probability of hitting the white portion could be calculated in a similar way as shown in part A. However, the event of hitting the white portion is the complement event of the event of hitting the black circle.

Because P(event) + P(complement of event) = 1

=> P = 1 - 0.025 = 0. 975 (P = 0.975 > 0.5 => P is closer to 1 than 0)

4 0
3 years ago
I need help pls pls pls pls
nignag [31]

Answer:

9(w+8)  factor 9

Step-by-step explanation:

factor expression

9w+72  divide both side by 9

9/9w+72/9

w+8

7 0
3 years ago
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