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lisov135 [29]
3 years ago
7

If you are going somewhere that is 60 miles away and you're going 40 miles per hour the whole time how long will it take you to

get there
Mathematics
1 answer:
Masja [62]3 years ago
5 0
Velocity * time = distance

40 (miles / hour) * t (hours) = 60 (miles)

Take note how the units work. miles/hour * hours = miles. This is an indication that a formula we picked is correct.

Now, looking at our formula (and neglecting units at this point)

40t = 60
t = 60/40
<span>t = 1.5 hours</span>
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Trig Question, 30points, will give brainliest.
ehidna [41]

Answer:

○ B. 4 + 4<em>i</em>√3

Step-by-step explanation:

√2(cos 10° + <em>i</em>sin 10°) = 1,392728481 + 0,2455756079<em>i</em>

[1,392728481 + 0,2455756079<em>i</em>]⁶ = 4 + 4i√3

I hope this does something to help, and as always, I am joyous to assist anyone at any time.

6 0
3 years ago
Write the equation of the parabola that has the vertex at point (2,7) and passes through the point (−1,3).
mariarad [96]
Step One
Use the vertex to determine the basic equation for the parabola.

y = a(x - 2)^2 + 7 Notice the sign change for x. I have provided a graph to show how this would look with a = 1 (in red.)

What it means is the  2 has to be minus in order that the vertex will shift 2 units in the x direction.

Step Two
Use the point to solve for a.
y = a(x - 2)^2 + 7
When x = - 1
Then y = 3

3 = a(-1 - 2)^2 + 7                combine -1 with - 2
3 = a (-3)^2 + 7
3 = 9a + 7                            Subtract 7 from both sides
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or                                
a = - 0.4444

y = -0.4444(x + 2)^2 + 7 <<<<< answer
y = - 4/9 (x + 2)^2 + 7

Note: if you have choices, list them please.

Note: The red graph is y = (x - 2)^2 + 7 ; a = 1
The blue graph is y = - 4/9(x - 2)^2 + 7 ; a = - 0.44444

You should notice that the a does 3 things to the graph. Before you read the answer, what are those three things? The answer is in the comments.

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vagabundo [1.1K]

Answer:

Yes

Step-by-step explanation:

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3 years ago
Which of the following is always true of the vertical angles formed by
Yuliya22 [10]

Answer:

A

Step-by-step explanation:

This is because vertical angles are always congruent, they cross diagonally which makes them equal to each other.

4 0
3 years ago
Mike's age is six more than two times his sister's age. Mike is seventeen years old.Write the equation that could be used to det
photoshop1234 [79]

Answer:

Mike's sisters age is 5 years old

Step-by-step explanation:

Since Mike is 17 years old, he is six years older than 2 times her age, so we subtract 6 from his age; we get 11 since he is 2 times her age divide 11 by 2 = 5.5. That means that his sister is 5 years old

8 0
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