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Alexeev081 [22]
3 years ago
9

Springdale Junior High has two students, Ashley and Taylor, that qualified for the regional track meet in the 800 meter dash. Th

e final race has only four spots available. Both Ashley and Taylor earned a spot in the final.
Mathematics
1 answer:
Svetach [21]3 years ago
4 0
I assume you want to know a permutation about how many ways they can be in the final set-up.

Order matters, which is why this is a permutation.

Formula: P(n, r) = \frac{n!}{(n-r)!}

where the permutation is n^{P} k, with P for permutation.

Plug in:

4!/(4-2)!
4!/2!
(1 x 2 x 3 x 4)/1 x 2
(3x4)/1
= 12

12 ways.
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Graph a line that is parallel to the line x=4 that goes through the point (−2,3)
Ivanshal [37]
<h2>Answer:</h2><h2>R=2</h2><h2 /><h2>Explanation:</h2><h2>x = 4  is a vertical line parallel to the y-axis and passing </h2><h2> through all points in the plane with an x-coordinate of 4 </h2><h2> x = 2  is parallel to  x = 4  so is a vertical line </h2><h2> passing through all points with x-coordinate of 2 </h2><h2> plot 2 or 3 points with an x-coordinate of 2 and  draw a straight line through them </h2><h2> for example  </h2><h2>( 2 , − 5 ) , (2 , 0 ) , ( 2 , 3 ) </h2><h2> graph{(y-1000x+4000)(y-1000x+2000)=0 [-10, 10, -5, 5]}</h2>
7 0
2 years ago
What is the domain of the function shown in the table?
Basile [38]
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So, option B gives the correct answer
3 0
3 years ago
Read 2 more answers
What is halfway bewteen -23 and 23
White raven [17]
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7 0
3 years ago
Maria needed school supplies to complete here digital learning day lessons. She ordered pencils and paper from Wal-mart. She spe
son4ous [18]

Answer:

5x + 4($1.5) = $12.25

Step-by-step explanation:

Since we know that the paper is $1.50 per package and she bought 4 packages of paper, then she spent a total of $6 on the paper. Which leaves ($12.25-$6) $6.25 that she spent on buying 5 pencils. Now the cost per pencil can be derived by dividing $6.25/5, which is $1.25. Each pencil is $1.25.

The equation that can be used is the following where the cost per pencil is represented by x:

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6 0
3 years ago
Which expression can you substitute in the indicated equation to solve the system of equations below?
Mama L [17]

You can see almost immediately that the second equation, 3x + y = -2, can be solved for y: y = -3x - 2. (Answer A). This -3x - 2 can in turn be subbed for y in the first equation, 4x + 3y = 4. Doing so, we get 4x + 3(-3x - 2) = 4.

Carrying out the indicated opeations: 4x - 9x - 6 = 4, or -5x = 10. Thus,

x = -2. Find y using y = -3x - 2 (from above): y = -3(-2) - 2 = 4.

Thus, the solution is (-2,4). We were not asked to solve this system of equations, but doing so illustrates the helpfulness of elimination of variables in solving simultaneous equations.

4 0
2 years ago
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