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Helga [31]
3 years ago
15

A football team lost 9 yards on its first play. On the next two plays they gained 3 yards and then 6 yards.Part A.What expressio

n can be written to represent how many yards the football team is from where it started? Explain your reasoning.
Mathematics
1 answer:
Dmitry_Shevchenko [17]3 years ago
7 0

Answer:

y = x - 9 + 3 +3

Step-by-step explanation:

In this case we can propose an equation where x is the starting point, and y is the ending point. Now, we know all the movements of the team, if we consider the yards won as positive values and the yards lost as negative values, the equation would be as follows:

y = x - 9 + 3 +3

If we solve we have:

y = x, that is to say, where they started.

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Serga [27]

Since the sum of the numbers on the three draws is 12, if we want the card numbered 2 to be drawn exactly two times, the third card can only be numbered 8. In fact, 2+2+8 = 12, and there are no other possibilities, unless you consider the various permutations of the terms.

So, we have three favourable cases: we can draw 2,2,8, or 2,8,2, or 8,2,2. This are the only three cases where the card numbered 2 is drawn exactly two times, and the sum of the number on the three draws is 12.

Now, the question is: we have three favourable cases over how many? Well, we have 5 possible outcomes with each draws, and the three draws are identical, because we replace the card we draw every time.

So, we have 5 possible outcomes for the first draw, 5 for the second and 5 for the third. This leads to a total of 5 \times 5 \times 5 = 5^3 = 125 possible triplets.

Once we know the "good" cases and the total number of possible cases, the probability is simply computed as

P = \cfrac{\text{number of favourable cases}}{\text{number of all possible cases}} = \cfrac{3}{125}

3 0
3 years ago
Can you pls help with these I really need help​
alukav5142 [94]

Answer:

for question one - x = 12

Step-by-step explanation:

a triangle is always 180, in other words you will add all the corners equal to 180

ex (for first question) - 7x -2 + 4x + 5x - 10 = 180

you add like terms, the x with x and single numbers with numbers, which results in 16x - 12 = 180. then you do the original operation "what you do to one sign of the equal side you do to the other"

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3 years ago
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kodGreya [7K]

Answer:

Step-by-step explanation:

Use the Law of Cosines to find the measure of angle A from the lengths of the sides.

A = arccos[(b²+c²-a²)/(2bc)] ≅ 29.9°

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Answer:

The answer would be y=6

Step-by-step explanation:

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If you liked my answer, please consider giving me a Brainliest!

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