3 years ago

Help please helpthanks

Mathematics

1 answer:

777dan777 [17]3 years ago

8 0

Answer:

1. 1 x 10^11

2. 4.9 x 10^15

3. 1.4 x 10^4

4. 2.07 x 10^-5

5. 4 x 10^17

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If 89 is divisible by 2, then 89 is an even number.<br> Converse:<br> Inverse:<br> Contrapositive:

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inverse: if 89 is not divisible by 2, then 89 is not an even number
contrapositive: if 89 is not an even number, then 89 is not divisible by 2.

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Isoke is solving the quadratic equation by completing the square.10x2 + 40x – 13 = 0 10x2 + 40x = 13 A(x2 + 4x) = 13What is the

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we have

$10x^{2} + 40x - 13 = 0$

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$10x^{2} + 40x =13$

Factor the leading coefficient

$10(x^{2} + 4x) =13$ ----------> the value of A is $10$

Complete the square. Remember to balance the equation by adding the same constants to each side

$10(x^{2} + 4x+4) =13+40$

$10(x^{2} + 4x+4) =53$

Rewrite as perfect squares

$10(x+2)^{2} =53$

$10(x+2)^{2} =53 \\ (x+2)^{2} =\frac{53}{10} \\ \\ x+2=(+/-)\sqrt{\frac{53}{10}} \\ \\ x1=-2+\sqrt{\frac{53}{10}}\\ \\ x2=-2-\sqrt{\frac{53}{10}}$

therefore

the answer is

the value of A is $10$

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Help please helpthanks​

Help please helpthanks