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GalinKa [24]
3 years ago
15

The graph shows the distance traveled by an Olympic-level sprinter over time during a race.

Mathematics
1 answer:
Svet_ta [14]3 years ago
7 0

Answer:

the slope is 1

Step-by-step explanation:

if you start at (0,0) and go up one and then right on the line lines up with the squares so since slope is  \frac{rise}{run} you go up one and the right one which makes it \frac{1}{1} so the answer is one.

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Find the solution to the equation below.<br> 2x^2+3x-20=0
mariarad [96]

Answer:

  x = -4, 5/2

Step-by-step explanation:

A quadratic can be solved may ways, including graphing, factoring, and the quadratic formula. You can also check possible answers by making use of the relationships between solutions and the coefficients.

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A graph is attached. It shows the solutions to be -4 and 5/2.

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When factored, the equation becomes ...

  (2x -5)(x +4) = 0 . . . . . has solutions x=-4, x=5/2 (these make the factors zero)

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Using the quadratic formula, the solutions of ax^2 +bx +c = 0 are found from ...

  x = (-b±√(b²-4ac))/(2a)

  x = (-3±√(3²-4(2)(-20))/(2(2)) = (-3±√169)/4 = {-16, +10}/4

  x = {-4, 5/2}

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For ax^2 +bx +c = 0, the solutions must satisfy ...

  product of solutions is c/a = -20/2 = -10

Only the first and last choices have this product.

  sum of solutions is -b/a = -3/2

Only the first choice (-4, 5/2) has this sum.

8 0
3 years ago
The longest side in a right triangle is 24 cm, and the second longest side is 20 cm. Find the length of the shortest side
harkovskaia [24]

Answer:

13.3 cm

Step-by-step explanation:

Apply the Pythagorean Theorem:

hyp² = (2nd longest side)² + (shortest side)².  Here the numbers are:

(24 cm)² = (20 cm)² + (shortest side)², or

576 - 400 = 176 = hyp²

Taking the square root of both sides, we get (shortest side) = 13.3 cm

5 0
3 years ago
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I am doing rate of change, question is down below.<br> I have two questions.Both down below.
guapka [62]

Answer:

For the first question, the answer is 4/3. For the second it is 16.

Step-by-step explanation:

I just took the quiz! Can I please have Brainliest? Hope this helped!

5 0
2 years ago
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Which of the following states the conditions that the graph meets?
Sladkaya [172]
B is correct
I just took it
8 0
3 years ago
6) -5x - 7y= 11<br> x - 2y=-9
sladkih [1.3K]

Answer:

Please check the attachment.

HOPE U UNDERSTOOD

COMMENT IF ANY DOUBTS

THANK YOU.

3 0
3 years ago
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