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3 years ago

Please help me quickly -5 - 6a = -59

Mathematics

1 answer:

MAXImum [283]3 years ago

8 0

Answer:

a=9

Step-by-step explanation:

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Please help asap<br><br> solve x^4+5x^2+4=0

const2013 [10]

Answer:

$x=\pm i\text{ or }x=\pm2i$

Step-by-step explanation:

So we have the equation:

$x^4+5x^2+4=0$

Let's let u be equal to x². So:

$u^2+5u+4=0$

Factor:

$(u+1)(u+4)=0$

Zero Product Property:

$u+1=0\text{ or } u+4=0$

Subtract:

$u=-1\text{ or }u=-4$

Replace:

$x^2=-1\text{ or }x^2=-4$

Take square root:

$x=\pm\sqrt{-1}\text{ or }x=\pm\sqrt{-4$

Simplify:

$x=\pm i\text{ or }x=\pm2i$

7 0

3 years ago

If a quadratic equation has 4-i as a solution, what must the other solution be?

Luden [163]

Answer:

4+i

Step-by-step explanation:

A complex number usually took the form a+bi where a and b are real numbers and 'i' represents an imaginary number. For a quadratic equation, the complex roots for the root of a quadratic equation took the form known as complex conjugates. The complex conjugates are formed by changing the sign of the imaginary part.

SO, if a quadratic equation has 4-i as a solution, the other solution must be 4+i.

6 0

3 years ago

In an upcoming race, the top 3 finishers will be recognized with the same award. Ryan is one of 12 people entered in the race.

BARSIC [14]

Since top 3 racers recognized with the same award, answer is 3/12 or 1/4 or .25

5 0

3 years ago

Read 2 more answers

kristen brought 2 candy bars for 1.29 each and a soda for 1.99 .she had to pay 0.38 in tax how much was her bill

Nadusha1986 [10]

The bill was $4.95 for the things they bought.