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2 years ago

It takes 20 minutes to drive to a mall at 30 mph. How long in minutes will it take to drive to the mall at 40 mph?

Mathematics

1 answer:

makvit [3.9K]2 years ago

6 0

At a speed of 40 mph, it would take 15 minutes to drive to the mall

The first step to take in order to determine the answer is to determine the distance driven to the mall. This information is not given so it has to determined.

Distance = speed x total time

speed = 30 mph.
time = 20 minutes

Speed is measured in hours, while time is measured in minutes. Both data has to be converted to the same time measurement

To convert time to hour, divide by 60 = 20 / 60 = 1/3

Distance = 1/3 x 30 = 10 m

The second step is to use the distance determined in the previous step to determine the time it would take to travel at a speed of 40 mph

Time = Distance / Average Speed

10 / 40 = 1/4 hours

To convert hours to minutes, multiply by 60 :1/4 x 60 = 15 minutes

In order to determine the time that it would take to drive to the mall, first determine the distance to the mall. Use the distance and speed to determine the time

A similar question was solved here: brainly.com/question/14391898?referrer=searchResults

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nataly862011 [7]

Answer:

Step-by-step explanation:

We can use the Pythagorean theorem since this is a right triangle

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3 years ago

Which sequence of transformations could be used to map triangle MNO onto M"N"O"? T(–2, 4) ry-axis ry-axisT(–2, 4) T(2, –4) T(2,

katrin [286]

Answer:

(A)T(–2, 4) ry-axis

Step-by-step explanation:

The graph showing triangles MNO and M"N"O" is attached below.

From the graph, the coordinates are:

M(5,-4),N(3,-2) and O(1,-3)

M"(-3,0), N"(-1,2) and O"(1,1)

When we transform triangle MNO by (-2,4), we obtain:

M'(3,0), N'(1,2) and O'(-1,1)

Next, we reflect M'N'O' the y-axis.

Note: When you reflect a point across the y-axis, the y-coordinate remains the same, but the x-coordinate is transformed into its opposite.

Therefore:

Reflection of M'N'O' accross the y-axis gives: M"(-3,0), N"(-1,2) and O"(1,1).

Therefore, the sequence of transformations could be used to map triangle MNO onto M"N"O" is T(–2, 4) ry-axis.

The correct option is A.

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3 years ago

a trapezoid has base lengths of 6 and 15 centimeters with an area of 136.5 square centimeters. What is the height of the trapezo

MrRa [10]

•*Ok first let me show you the formula for the Area of the trapezoid.
A=a+b/2 h.(I will be using the letter x for the multiplication sign)

*And here is the formula to find the height of a trapezoid
h=2 x A/a+b (2 times the Area over base "a" plus base "b")

*We need to plug in the numbers: h = 2 x 136.5/6+15
*Next, we add the two bases to get 21: 6+15=21 (h=2 x 136.5)
*Then, divide the total of the two bases (21) from the area to get 6.5: 136.5/21-6.5
*Finally we multiply 2 by 6.5: 2 x 6.5= 13
The height if this trapezoid is 13.

Hope this helps you ☺

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3 years ago

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