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Wewaii [24]
3 years ago
11

in a race there are 15 Runners the trophies for the race are awarded to the races finish and 1st through 3rd place and how many

ways can first through third place be determined
Mathematics
2 answers:
vladimir1956 [14]3 years ago
6 0
There are 15 possibilities for first place, 14 for second, and 13 for third. 15 × 14 × 13 = 2730
lana [24]3 years ago
3 0

Answer:

<u>There are 2,730 ways that 1st, 2nd and 3rd place can be determined in the race</u>

Step-by-step explanation:

There are 15 (number of runners) possibilities to determine the 1st place

There are 14 possibilities (number of runners - 1) to determine the 2nd place

There are 13 possibilities (number of runners - 2) to determine the 3rd place

Number of ways that 1st, 2nd and 3rd place can be determined = 15 * 14 * 13

<u>Number of ways that 1st, 2nd and 3rd place can be determined = 2,730</u>

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Bezzdna [24]

Given:

The vertices of a triangle ABC are A(-2,1), B(-1,4) and C(-4,5).

Triangle ABC is reflected over the x‐axis, reflected over the y‐axis, and rotated 180 degrees.

To find:

The point B'.

Solution:

If a figure reflected over x-axis, then

(x,y)\to (x,-y)

B(-1,4)\to B_1(-1,-4)

If a figure reflected over y-axis, then

(x,y)\to (-x,y)

B_1(-1,-4)\to B_2(-(-1),-4)

B_1(-1,-4)\to B_2(1,-4)

If a figure rotated 180 degrees about the origin, then

(x,y)\to (-x,-y)

B_2(1,-4)\to B'(-(1),-(-4))

B_2(1,-4)\to B'(-1,4)

So, the coordinate of point B' are (-1,4).

Therefore, the correct option is A.

6 0
2 years ago
Find a polynomial function p of lowest​ degree, having rational​ coefficients, with the given zero. 5i
weqwewe [10]
If we have one zero of +5i, we also have to have its conjugate which is -5i.  Therefore, the factors that we will FOIL to get that polynomial are (x+5i)(x-5i).  That distribution results in x^{2} -25 i^{2}.  I'm sure by now you know that i squared is equal to -1, so -25(-1) = 25.  So our polynomial is x^{2} +25=y
7 0
3 years ago
Jesse uses this expression to determine how much to pay, including tax and tip, when he goes out to a restaurant:
lana66690 [7]

Answer:

x is the price of the meal

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Step-by-step explanation:

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5 0
2 years ago
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hoa [83]

Answer:

B 3x+2

Step-by-step explanation:

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if x=width then

P=2(L+x)

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hmm

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distribute

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6 0
2 years ago
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valentinak56 [21]
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