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Andreas93 [3]
4 years ago
6

What does this equal to in standard form? (A+bi)

Mathematics
2 answers:
Fudgin [204]4 years ago
5 0

Answer:

-33 - 21i

Step-by-step explanation:

3i (-7 + 11i)

= -21i + 33i^2                   (i^2 = -1)

= -21i + 33(-1)

= -33 - 21i

elena55 [62]4 years ago
3 0

3i(-7+11i)=-28i+33i^2=\boxed{-33-28i}

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Which statement is true about the equation 3.5z = 2.25z − 4.25 + 6.25?
Yuliya22 [10]
Since the solution will be of the form z=k it has one solution...

3.5z=2.25z-4.25+6.25

3.5z=2.25z+2

1.25z=2

z=1.6

A single solution...


5 0
3 years ago
Read 2 more answers
The sequence an = 27 ( one third ) ^ n-1 is graphed below. Find the average rate of change between n=2 and n=4
Mrrafil [7]
Rate of change
find a2 and a4

a2=27(1/3)^(2-1)=27 times 1/3=9
a4=27(1/3)^(4-1)=27 times 1/27=1

rate of change=(a4-a2)/(4-2)=(1-9)/(4-2)=-8/2=-4
average rate of change is -4
8 0
3 years ago
Consider the equation below. -2(5x + 8) = 14 + 6x​
77julia77 [94]

Answer:

-1.875

Step-by-step explanation:

1. Write the problem: -2(5x + 8) = 14 + 6x

2. Multiply -2 by 5 and 8 to get: -10x - 16 = 14 + 6x

3. Combine like terms: -16x - 16 = 14

4. Repeat step 3: -16x = 30

5. Divide -16 by 30 to get the answer which is -1.875.

Hope this helped!

5 0
3 years ago
If R is inversely proportional to A, and R = 4 when A = 100, what is the value of R when A = 250 A : .625 B : 1.6 C : 10 D : 6,2
Lerok [7]

Answer: (b)

Step-by-step explanation:

Given

R is inversely proportional to A i.e

R\propto \dfrac{1}{A}\\\\R=\dfrac{C}{A}\quad [\text{C=Constant}]

when R=4,\ A=100

Insert the values to get C

\Rightarrow 4=\dfrac{C}{100}\\\\\Rightarrow C=400

When A=250

\Rightarrow R=\dfrac{400}{250}\\\\\Rightarrow R=1.6

option (b) is correct

3 0
3 years ago
Which of the following functions is graphed below?
stepladder [879]

Answer:

idk man if you want to add a picture click the paperclip thingy though

8 0
3 years ago
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