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Ket [755]
3 years ago
8

A race is 10 kilometers long. Markers will be placed at the beginning and end of the race course and at each 500 meter mark. How

many markers are needed to mark the course for the race.
Mathematics
1 answer:
spayn [35]3 years ago
3 0
The answer is 20. You use 20 markers for it all.
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Wetting the cloth cover of your canteen on a hot day is a good or bad idea
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Describe the graph of the function. y = |x - 4| - 7
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Answer:

Step-by-step explanation:

The graph is that of the basic absolute value function y = |x|, except that the vertex (0, 0) has been translated 4 units to the right and 7 units down.

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Can you help me with the answer
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Divide them all then put those answers down from least to greatest and then use the original numbers booooooommmm
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Very urgent... I need it right now.. please help me with explanation!
aliina [53]

Answer:

a) Water height, H(g) = 8g^2 + 3g -4 - [9g^2 -2g -5] = 8g^2 + 3g -4 -9g^2 + 2g +5 = -g^2 +5g +1

b) g = 1

H(g) = -(1)^2 + 5(1) + 1 = -1 + 5 + 1 = 5

g=2

H(g) = -(2)^2 + 5(2) + 1 = -4 + 10 + 1 = 7

g=3

H(g) = -(3)^2 + 5(3) + 1 = -9 +15 +1 = 5

c) Greatest height

Find the vertex of the parabole

The vertex is at the mid point between the two roots.

To find the roots you can use the quadratic equation

The result is g = 5/2 + [√29]/2 and g = 5/2 - [√29]/2

The middle poin is 5/2 = 2.5

Now find H(2.5) = -(2.5)^2 + 5(2.5) + 1 = 7.5 ≈ 7.3

hope this helps

4 0
3 years ago
What is the surface area of right rectangular prism with dimensions of
alexira [117]

Answer:

S.A of a rectangular prism is 2lh+2lw+2hw

2(4x6)+2(4×4)+2(6×4)

2(24)+2(16)+2(24)

48+32+48= 128cm²

4 0
2 years ago
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