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igor_vitrenko [27]
3 years ago
12

A train leaves the station at noon. the train is 180 miles from its destination at 12:45 pm and 90 miles from its destination at

2:15 pm.
26. how far is the station from the destination?
27. At what time will the train reach the destination?
Mathematics
1 answer:
Veronika [31]3 years ago
8 0

Answer:

From 12:45 to 2:15 is 1.5 hours, in that time, the train traveled 90 miles.

The speed of the train is 90 / 1.5 = 60 miles per hour.

From noon to 12:45 is 0.75 hours.

The distance the train traveled in that time is 0.75 x 60 = 45 miles.

26. The distance from the station to the destination is 45 + 180 = 225 miles.

27. At 2:15 the train is 90 miles away from the destination. 90 miles / 60 miles per hour = 1.5 more hours to go.

2:15 + 1.5 hours = 3:45 pm

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Answer:

6 (2)^ = 6

6 (2)^2 = 24

a = 24

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y-intercept: (0,6)

y-intercept =

Step-by-step explanation:

6(2)^x

6 (2)^0 = 6 (a number ^0 = 1, 6 times 1 = 6)

6 (2)^2 = 6 x 4 = 24

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Step-by-step explanation:

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Edgar wants to plot the ordered pair (1.8, - 1.2) on a coordinate plane on each axis one grid square equals 0.1 . Starting at th
yan [13]

Answer:

For better understanding of the answer see the attached figure :

length of grid square on each axis on coordinate plane is 1 units

But here it is given to be 0.1 units.

So, in order to find the ordered pair (1.8 , -1.2) we need to first locate 1.8 on x-axis and -1.2 on y-axis

Now, as each axis one grid square equals 0.1 . So,we go 18 units on positive x -axis and mark point (1.8,0) and 12 units on negative y-axis and mark point (0,-1.2) and draw vertical and horizontal lines passing through these points respectively. And the point of intersection of these lines is our required point (1.8,-1.2)

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Please I have a 8th grade math question
Soloha48 [4]
<h3>Answer:  2</h3>

==========================================================

Explanation:

x = number of years

y = height in feet

The equation for the first tree is

y = x+3

The slope is 1 to represent a rate of 1 ft per year of growth. The y intercept of 3 is the starting height. Refer to y = mx+b form.

For the second tree, the equation is:

y = 0.5x+4

This time we have a slope of 0.5 and a y intercept of 4.

Apply substitution to solve for x

y = x+3

0.5x+4 = x+3

0.5x-x = 3-4

-0.5x = -1

x = -1/(-0.5)

x = 2

The trees will be the same height in <u>  2  </u> years.

What will that height be? Plug x = 2 into either equation to find y. We should get the same y value.

y = x+3

y = 2+3

y = 5

Or we could say

y = 0.5x+4

y = 0.5*2+4

y = 1+4

y = 5

We've shown that both equations lead to y = 5 when x = 2. This means that at the 2 year mark, both trees are 5 feet tall. This helps confirm we have the correct x value.

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2 years ago
Jebb is the tallest player on the basketball team. He is 1 1/2 times as tall as the shortest girls in the sixth grade, who is 4
yanalaym [24]

Answer:

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Step-by-step explanation:

Jebb's Height Calculation:

The heights are given in <em>Mixed Fraction</em>. A mixed fraction is comprised of a whole number and a proper fraction, where as <em>proper fraction </em>is the one whose numerator is less than its denominator and <em>improper fraction </em>is the one whose numerator is greater than its denominator:

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<em>Converting the height in improper fraction</em>:

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Jebb's Height = 1\frac{1}{2} feet  x The shortest girl height

<em>Converting the height of Jebb in Improper Fraction</em>:

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<em>To find the Jebb's height we multiply 3 by 17 and 2 by 4 to get a improper fraction of</em>;

Jebb's Height =  \frac{51}{8} feet

We can convert the above in mixed fraction as follows:

6\frac{3}{8} feet tall.

3 0
3 years ago
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