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sweet-ann [11.9K]
3 years ago
5

Write (-5+8i)+(-5-8i) as a complex number in standard form

Mathematics
1 answer:
gizmo_the_mogwai [7]3 years ago
5 0
(-5+8i)+(-5-8i) =
-5+8i-5-8i=-10
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Compute the average rate of change of f(x)=(x+4)/(x-3) over the interval [5,7].
muminat

Answer:

  • C) - 7/8

Step-by-step explanation:

<u>Average rate of change is:</u>

  • [f(7) - f(5)]/(7 - 5)

<u>Find the values and substitute into expression:</u>

  • f(7) = (7 + 4)/(7 - 3) = 11/4
  • f(5) = (5 + 4)/(5 - 3) = 9/2 = 18/4

<u>Find the rate of change:</u>

  • (11/4 - 18/4)/2 = (-7/4)/2 = - 7/8

Correct choice is C

7 0
3 years ago
Harita must memorize 90 measures of music for her cello solo at a concert. She plans on memorizing 18 new measures for
skad [1K]

m = 90 - 6d is the equation to determine m, the number of measures Harita still needs to  memorize, as a function of d, the number of days of practice since she began learning the piece

<em><u>Solution:</u></em>

Given that Harita must memorize 90 measures of music for her cello solo at a concert

To find: equation to determine m, the number of measures Harita still needs to  memorize, as a function of d, the number of days of practice since she began learning the piece

Let "m" be the number of measures Harita still needs to  memorize

Let "d" be the number of days of practice since she began learning the piece

Given that She plans on memorizing 18 new measures for  every 3 days of practice

<em><u>Rate per day is given as:</u></em>

\frac{18}{3} = 6

Therefore she memorises 6 per day

<em><u>Therefore, the equation that relates 'm' to 'd' is: </u></em>

m = total measures of music she must memorise - (number of measures she memorises per day x d)

m = 90 - 6(d)

m = 90 - 6d

Thus the required equation is found

7 0
3 years ago
Wallace took out a $5,000 loan for six years. He is being charged 4 percent interest, compounded annually. Calculate the total a
Korolek [52]
The solution is 6326.59509248 =6329.60

p=5000,r=4,t=6 years

compound interest=P[1+r\100]^(t)
8 0
3 years ago
Read 2 more answers
Can someone help me figure this one please
Norma-Jean [14]

Answer:

9.25

Step-by-step explanation:

5 x .3 = 1.5

20 - 1.5 = 18.5

18.5/2 = 9.25

4 0
3 years ago
Identify the correct binder for each paint.
yan [13]

Answer:

egg yolk

Step-by-step explanation:

3 0
3 years ago
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