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3 years ago

Consider z = 3StartRoot 3 EndRoot + 3i. What happens to the modulus and argument when z is raised to the 4th power?

Mathematics

1 answer:

exis [7]3 years ago

6 0

Answer:

It's A

Step-by-step explanation:

Just took it and it matches

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Fred begins walking toward John house at 3 mi/h. John leaves his house at the same time and walks toward Fred's house on the sam

Tcecarenko [31]

Let us assume as at when they meet, the time elapsed is x hours.

Fred 3 mi/h
John 2 mi/h

Distance = speed * time

Fred = 3x
John = 2x

Houses are 4miles apart.
So: 3x + 2x = 4 5x = 4

x = 4/5 hour = 0.8 hour or 0.8*60 = 48 minutes

Time elapsed is 0.8 hour or 48 minutes.

7 0

3 years ago

Find the coordinates of the midpoint of a segment with the endpoints (12,2) and (7,9)

olga55 [171]

Answer:

(9 $\frac{1}{2}$ , 5 $\frac{1}{2}$ ) or (9 1/2, 5 1/2) (same things, just typed two different ways)

Step-by-step explanation

I can't remember the midpoint formula so I'll use a different method to get the midpoint.

since the ratio of a midpoint is 1:1 and that as a fraction is 1/2, we can take these coordinates and designate which one is first and which one is second (12, 2) will be my second and (7,9) will be my first. The formula I will use will be $\frac{m}{m+n} (second X, - first X) + first x$ , so 1/2( 12 - 7) +7. now distribute the 1/2 to both the numbers $\frac{1x12}{2} -\frac{1x7}{2} + 7 \\ \\ 12/2 -7/2 = 5/2 + 7 = 9.5$ or $9\frac{1}{2}$ . The same works with the Y values, which would equal up to 5.5 or 5 $\frac{1}{2}$

5 0

1 year ago

Two equations are given. m + 5n = 20

vesna_86 [32]

Answer:

B. (0, 4)

Step-by-step explanation:

so we need to find the value of m and n, and luckily we have 2 equations that'll help. (I'm going to use the substitution method for this instead of the Elimination method because I am lazy)

first we need to solve for m, but we already have an equation that tells us what m is equal to, m = n - 4.

now we just need to plug in our new m into the other equation and solve for n. (we are using m + 5n = 20 for that)

so now we get

(n - 4) + 5n = 20

so we solve for n

n + 5n = 24

6n = 24

n = 4

now that we know that n is 4, we can plug that into our m equation (m = n - 4)

m = 4 - 4

m = 0

now we have our m and n, and we can make our ordered pair.

(m, n)

(0, 4)

5 0

3 years ago

Can y'all help me with this?

Iteru [2.4K]

23/84 - 2/-2 realy jjjj j j j

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2 years ago

Someone help me on here I’m confused

valentinak56 [21]

Answer:

7 2/15

Step-by-step explanation:

Second option

6 0

2 years ago

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