A unknown number X is almost 20 which graph best represents all the values of X

Mathematics

1 answer:

Reptile [31]3 years ago

5 0

The answer is the third one.

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A train leaves Los Angeles at 2 p.m. heading north at 50 mph. If the next train leaves three hours later and also heads north at

Mamont248 [21]

Since the first train has been travelling for 3 hours, we have the following equations:
$d=50t+3*50=50t+150$
$d=60t$

We want to know when they will be equal, so set these equal to eachother:
$60t=50t+150$
$10t=150$
$t=15$

So 15 hours after the second train leaves, they will be at the same distance. This is at 8AM since the second train leaves at 5PM.

5 0

3 years ago

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Write the function f(x) = 3x2 - 6x + 5 in vertex

weeeeeb [17]

3(x-1)^2 +2
This is your answer in vertex form, your h and k values are the vertex. Solving the function by using b/2a, we get that h is 1. ( in the equation 3 is your a, 6 is b and 5 is c.). ( 6/2(3)) = 1. We can then plug in 1 as x into the original equation and get positive 2 ( 3(1)^2 -6(1) +5) = 3-6+5 = 2. This is your vertex. In the function, your a value will always stay the same as this is your shrink or stretch. In this case, a is 3 so it will go outside the parenthesis. Put that all together and you get the function above.
Hope this helps :)

7 0

2 years ago

An artist painted a mural measuring 9’ x 20 1/2’ find the area and perimeter of the mural

Ann [662]

The difference is 180 is the correct answer for the problems

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2 years ago

What is the value of k?<br> k=

noname [10]

Answer:

no equation given ,pls mention it in the comments

8 0

2 years ago

Helpppppp helpppppppp plssssssssss

Vinil7 [7]

Answer:

Scales-No equal sides

Isosceles- 2 Equal

Equilateral-

Right-90 degree

Obtuse- Obtuse Angle

8 0

3 years ago