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3 years ago

Geoffrey is evaluating the expression (-3^3(2^6)/(-3^5(2^2) what are the values of a,b,c and d

Mathematics

1 answer:

tiny-mole [99]3 years ago

5 0

-9×36÷-15×4
-324÷60
-5.4
(not sure if this is what you are looking for)

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Solve the equation: k^2+5k+13=0

mr_godi [17]

Step-by-step explanation:

k² + 5k + 13 = 0

Using the quadratic formula which is

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

From the question

a = 1 , b = 5 , c = 13

So we have

$k = \frac{ - 5 \pm \sqrt{ {5}^{2} - 4(1)(13) } }{2(1)} \\ = \frac{ - 5 \pm \sqrt{25 - 52} }{2} \\ = \frac{ - 5 \pm \sqrt{ - 27} }{2} \: \: \: \: \: \: \\ = \frac{ - 5 \pm3 \sqrt{3} \: i}{2} \: \: \: \: \: \:$

Separate the solutions

$k_1 = \frac{ - 5 + 3 \sqrt{3} \: i }{2} \: \: \: \: or \\ k_2 = \frac{ - 5 - 3 \sqrt{3} \: i}{2}$

The equation has complex roots

Separate the real and imaginary parts

We have the final answer as

$k_1 = - \frac{5}{2} + \frac{3 \sqrt{3} }{2} \: i \: \: \: \: or \\ k_2 = - \frac{5}{2} - \frac{3 \sqrt{3} }{2} \: i$

Hope this helps you

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2 years ago

Label the points, lines, and planes to show AB←→ and line j perpendicular to each other in plane R at point A, AB←→ both perpend

algol [13]

Answer:

That would be c

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What is 2.4×10 to the seventh power

kotykmax [81]

This is easy once you look at it you just have to move the decimal 7 places and you'll get 24,000,000

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3 years ago

TRUE or FALSE? 1.) If x = -3, then the value of 4x + 5 is 17.

Strike441 [17]

<h2>I think it's false</h2>

<h2>I hope it's helpfull for you</h2>

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Solve each equation for m -5 =8

Diano4ka-milaya [45]

Answer:

m = 13

Step-by-step explanation:

Given

m - 5 = 8 ( isolate m by adding 5 to both sides of the equation )

m = 8 + 5 = 13

3 0

3 years ago

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