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FinnZ [79.3K]
3 years ago
5

Is this relation a function?

Mathematics
1 answer:
9966 [12]3 years ago
5 0
Yes that is a function because every number has a pair that goes to each other once
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Marshall left home biking at a constant rate of 20 mph. One hour later, it looked like it may rain, so his friend, Brett, set ou
xxTIMURxx [149]

Answer:

First, we need to find how far ahead Marshall was.  Since he had been biking at 20 mph for one hour, he had gone 20 miles.

Next, we need to find how long it will take Brett to catch up to Marshall.  In order to do this, we need to find how much faster Brett is going than Marshall.  We do this by subtracting Marshall's speed from Brett's speed.

60 - 20 = 40.  So, Brett is catching up to Marshall at 40 mph.  Now, we figure out how long it will take for someone going 40 miles per hour to go 20 miles.  We find this by dividing 40 miles per hour by 20.  This is equal to 1/2 hour.  So, it will take Brett 0.5 hours to catch up to Marshall.  This is the same as A, so A is the correct answer.

We can check our answer by seeing how far Marshall and Brett will have gone.  Marshall will have been biking for 1.5 hours, so we multiply 20 * 1.5 = 30.  Marshall went 30 miles.

Brett drove for .5 hours at 60 mph, so he went 30 miles.  Since Brett and Marshall went the same distance, our answer is correct.

4 0
3 years ago
Find the value of x.<br><br> Please help and can somebody tell me how to find x?
Olegator [25]

Answer:

x = 75°

Step-by-step explanation:

Sum of the interior angles of a triangle = 180°

Therefore,

78° + 27° + x° = 180°

Add like terms

105 + x = 180

105 + x - 105 = 180 - 105 (substraction property of equality)

x = 75°

4 0
2 years ago
What is the result 75 is decreased by 40%???
Lisa [10]
75 decreased by 40% is 45
3 0
2 years ago
Will give brainliest!
valina [46]

Replace x in the equation with the given x values and solve for y:


3 + 2(4) = 11

3 + 2(5) = 13

3 + 2(9) = 21

3 + 2(10) = 23


the y values are: 11, 13, 21, 23

5 0
1 year ago
Read 2 more answers
What is true about MSR?
andre [41]
<span>The correct answer is it must be a right angle.

Explanation<span>:
This is a rhombus, as it is a parallelogram with all congruent sides. In a rhombus, diagonals are perpendicular bisectors of each other; this means that they meet at right angles, so MSR must be a right angle.</span></span>
4 0
2 years ago
Read 2 more answers
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