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Ierofanga [76]
3 years ago
9

Simplify: (-3i)(4i)(-5i)

Mathematics
1 answer:
Alecsey [184]3 years ago
4 0
60i
if you go to mode on your calculator then Chang it from "real" to "a+bi" you can solve for unreal numbers. if you press "2nd" then "." it makes an "i"

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Find the larger of the two roots of the equation y = -2.2x2 + 63.5x - 17
Luden [163]

The larger of the two roots of the equation y = -2.2x^2 + 63.5x - 17would be 28.59.

<h3>How to find the roots of a quadratic equation?</h3>

Suppose that the given quadratic equation is

ax^2 + bx + c = 0

Then its roots are given as:

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

The given quadratic equation is

y = -2.2x^2 + 63.5x - 17

now, the roots of the equation are

x = \dfrac{-63.5 \pm \sqrt{63.5^2 - 4(-2.2)(-17)}}{2(-2.2)}\\\\\\x = \dfrac{-63.5 \pm \sqrt{4032.25 - 149.6}}{(-4.4)}\\\\\\x = \dfrac{-63.5 \pm \sqrt{3882.65}}{(-4.4)}\\\\\\x = \dfrac{-63.5 \pm 62.31}{(-4.4)}

The two roots are 0.27 and 28.59.

Thus, the larger of the two roots of the equation y = -2.2x^2 + 63.5x - 17would be 28.59.

Learn more about finding the solutions of a quadratic equation here:

brainly.com/question/3358603

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7 0
2 years ago
Which question is equivalent to 5+n
Dima020 [189]

Answer:

the answer would be n+5

Step-by-step explanation:

5n is the same as saying 5 multiplied by n

n +5 would equal the same number

for example if n=2 then 5+2=7

and if we used n+5 it would be 2+5=7

and if you plugin n=2 for all the equations the only correct one is N+5

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Justin made a scale drawing of a sailboat he saw at the harbor. The length of the actual boat is 24 feet, and the mast is 20 fee
Paladinen [302]
The length of the boat on his sketch is 12 cm
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What is 0.009 in a fraction
ira [324]

Answer:

9/1000

Step-by-step explanation:

convert the decimal numbers to a fraction by placing the decimal numbers over a power of ten. since there are 3 numbers to the right of the decimal point,place thw decimal numvers over 10^3 (1000).

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Can somebody pls help mee
Leto [7]

Answer:

the answer is 8

Step-by-step explanation:

add all four in n the half of the others 2 =1

8 0
3 years ago
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