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Tanzania [10]
3 years ago
13

Fill in the blanks: given 4a -3b =22.

Mathematics
1 answer:
Assoli18 [71]3 years ago
4 0

Answer:

The answer are

A)

4 \times 4 - 3b = 22 \\  - 3b = 6 \\ b =  - 2

B)

4a = 22 + 3 \times 6 \\ a = 10

C)

4 \times 0 - 3b = 22 \\ b =  \frac{ - 22}{3}

D)

4a - 3 \times 0 = 22 \\ a =  \frac{22}{4}

E)

a = 22

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Use a quadratic equation to find two real numbers with a sum of -43 and a product of 306.
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Answer:

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The standard form of a quadratic equation is ax² + bx + c = 0

Given the following data;

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Quadratic equation formula is;

x = \frac {-b \; \pm \sqrt {b^{2} - 4ac}}{2a}

Substituting into the equation, we have;

x = \frac {-(-43) \; \pm \sqrt {43^{2} - 4*1*306}}{2*1}

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Therefore, the two real numbers are 39 and 9.

The quadratic equation now becomes;

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