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3 years ago

Need some help with the answer to the question

Mathematics

1 answer:

kicyunya [14]3 years ago

8 0

Answer:

(- 4, 27 )

Step-by-step explanation:

Equate the right sides of both equations, that is

x² - 2x + 3 = - 2x + 19 ← subtract - 2x + 19 from both sides

x² - 16 = 0 ← in standard form

(x - 4)(x + 4) = 0 ← in factored form

Equate each factor to zero and solve for x

x - 4 = 0 ⇒ x = 4

x + 4 = 0 ⇒ x = - 4

Substitute these values into f(x) = - 2x + 19

f(4) = - 2(4) + 19 = - 8 + 19 = 11 ⇒ (4, 11 )

f(- 4) = - 2(- 4) + 19 = 8 + 19 = 27 ⇒ (- 4, 27 )

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Daniel [21]

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Step-by-step explanation:

The total possible average score for the math course is 100

a) If the teacher rates homework at 10%, it means that the total possible score for homework

is 10/100 × 100 = 10

If his homework average is 93, then his score would be

(93×10)/100 = 9.3

b) If the teacher rates quizzes at 30%, it means that the total possible score for quizzes

is 30/100 × 100 = 30

If his quiz average is 82, then his score would be

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c) If the teacher rates test at 40%, it means that the total possible score for quizzes

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If his quiz average is 72, then his score would be

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d) If the teacher rates final exam at 20%, it means that the total possible score for quizzes

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Jarvis's class average would be

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3 years ago

Solve 4y - 7 =29 Quickly done

Murljashka [212]

Answer:

y=9

Step-by-step explanation:

4y-7=29

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3 years ago

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neonofarm [45]

The 'template' for a quadratic function is:
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