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Andre45 [30]
2 years ago
10

Is -4 a real or imaginary number?

Mathematics
2 answers:
ryzh [129]2 years ago
7 0

Answer:

Real number

Step-by-step explanation:

Unless it has an i with it then it's an imaginary number but because it doesn't have an i with it it's real

qwelly [4]2 years ago
5 0

Answer:

real number

Step-by-step explanation:

Hi! -4 is a real number because imaginary numbers are characterized as i= sqrt -1

If you see a number with an i in it, then it is imaginary. In this case, however, we have a real number.

I hope this helps!

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In ΔLMN, n = 510 cm, l = 820 cm and ∠M=20°. Find ∠L, to the nearest degree
Dafna11 [192]

The angular measure L is : 47°

<h3>What are angles?</h3>

Angles are formed when two lines meet.

Analysis:

Firstly, we calculate for m using cosine rule.

m^{2} = 510^{2} + 820^{2} -2(510)(820) cos 20

m^{2} = 260100 + 672400 -83600(0.9396)

m^{2} = 146618.56

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using sine rule to find ∠L

382.9/sin20 = 820/sinL

sinL = 820sin20/382.9

sinL = 820(0.342)/382.9

sinL = 0.732

L = sin inverse of 0.732 = 47°

In conclusion, ∠L is 47°

Learn more about sine and cosine rule: brainly.com/question/4372174

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8 0
2 years ago
Ivan works at a stable. He has 4 bags of horse feed that each weigh 8.25 kilograms.
evablogger [386]
B. 6.6 kg explanation: 4 x 8.25 = 33 divded by 5 is 6.6
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Darnell is making improvements to his 3: 13 feet by 12 feet bedroom. Which deal would he best for him?
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Step-by-step explanation:

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Step-by-step explanation:

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