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zheka24 [161]
2 years ago
6

Please help me with this on the image

Mathematics
1 answer:
alukav5142 [94]2 years ago
8 0

Answer:

200 grams

Step-by-step explanation:

80 grams        x grams

-------------- = -------------

6 people        15 people

Using cross products

80 *15 = 6x

1200 = 6x

Divide by 6

1200/6 = 6x/6

200 =x

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Answer:

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Step-by-step explanation:

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→ By comparing it with the form above

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→ Substitute x by 0 and y by -5 in the equation to find the value f c

∵ -5 = (0)² + b(0) + c

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∵ The point (5, 0) lies on the curve

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∴ 0 = 25 + 5b - 5

→ Add the like terms in the right side

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→ Subtract 5b from bth sides

∵ 0 - 5b = 20 + 5b - 5b

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→ Substitute them in the rule of h above t find it

∵ h = \frac{-(-4)}{2(1)} = \frac{4}{2}

∴ h = 2

→ To find k, substitute x by 2 and y by k

∵ k = (2)² - 4(2) - 5

∴ k = 4 - 8 - 5

∴ k = -9

∴ The cordinates of the turning point are (2, -9)

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