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a_sh-v [17]
3 years ago
8

(1+5i) + (-8+i) ? Need answer and steps

Mathematics
1 answer:
Shtirlitz [24]3 years ago
7 0

Answer:

6\sqrt{-1}-7

Step-by-step explanation:

simplyifying this we get

1+5i-8+i

= 6i-7

I am assuming the i you are talking about here is the sqrt of negative one so that would be 6\sqrt{-1}-7

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Multiplay 0.6 by 0.9.
Anna71 [15]

0.54

Simplify ——

10

Equation at the end of step

1

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6 9

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10 10

STEP

2

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3

Simplify —

5

Equation at the end of step

2

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3 9

— • ——

5 10

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Final result :

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8 0
2 years ago
Knowing the population standard deviation, a 95% confidence interval infers that the population mean ___________. is between 0 a
nevsk [136]

Answer:

within ±1.96 standard deviations of the sample mean

Step-by-step explanation:

A 95% confidence interval is found using the formula C = 1 - α, and some other stuff, but let's focus on that for now. Using the formula:

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If α = .05, that means a 2-sided confidence interval would be found using the sample mean and the Z-score Z(subscript α/2), or Z.₀₂₅ because α AKA .05 divided by 2 = .025. From there, you take this either to your calculator or a Z-table (or perhaps you have a chart that lists the common CI values), and see that for the area to be .025 beneath a standard normal curve, your Z value is ±1.96 ("plus or minus" because we're considering a 2-sided confidence interval).

3 0
3 years ago
Find the angle of rotation about the center of the square that maps A to C.
zheka24 [161]

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3 years ago
What are the coordinates of the image of vertex R after a reflection across the y-axis? (–4, 3) (4, –3) (–3, –4) (3, 4)
bogdanovich [222]

(–4, 3) (4, –3) (–3, –4) (3, 4)

this is a rather simple yet complex concept the easiest way to solve these is to do the exact opposite.

so in this instance it is refrcted across the y-axiss so we swap ONLY the x value NOT the Y ie (-4,3) would switch to (4,3)

same thing would apply if it reflected across x-axis ex (-4,-3)

If it reflect across orgin you change both signs. ex (4,-3)

ie.

(–4, 3) (4, –3) (–3, –4) (3, 4)

changes to

(4, 3) (-4, –3) (3, –4) (-3, 4)

hope it helps

6 0
4 years ago
Read 2 more answers
Solve using the pathagorean theorem​
podryga [215]
I believe the answer would be 65 because 4 squared is 16 and 7 squared is 49 add those and it equals 65
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2 years ago
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