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3 years ago

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Which pair of equations can be used to verify the rectangular form, z = a + bi, and the polar form of a complex number are equiv

alent?
A.) a = sin(θ) and b = cos(θ)
B.) a = cos(θ) and b = sin(θ)
C.) a = rsin(θ) and b = rcos(θ)
D.) a = rcos(θ) and b = rsin(θ)

1 answer:

erastova [34]3 years ago

6 0

Answer:

D.) a = rcos(θ) and b = rsin(θ)

Step-by-step explanation:

Got it right on Edge

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Brad says that if a second number is 125% of the first number than the second number must be 75% of the second number is he corr

elena-s [515]

Answer:

Incorrect.

Step-by-step explanation:

Let, the first number is x, and the second number is y. Given, the second number is 125% of the first number. So, the equation will be

y = 1.25 x

Or, y= 5/4x

Now, multiplying it with 4/5, we get, x= 4/5y

Or, x= 0.80 y

But, Brad is saying the first number must be 75% of the second number. But here we see that the first number is 80% of the second number. That's why Brad is incorrect.

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2 years ago

number of cars sold in a dealership on each day of may. is it A the data are a time series because of the data are measured over

KengaRu [80]

B is the answer.....

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2 years ago

A sequence is defined by the recursive formula f(n+1)=f(n)-2. If f(1)=18, what is f(5)?

N76 [4]

Answer:

$f(5)=10$

Step-by-step explanation:

A sequence is defined by the recursive formula $f(n+1)=f(n)-2$

If $f(1)=18,$ then

for $n=1: f(2)=f(1+1)=f(1)-2=18-2=16$

for $n=2: f(3)=f(2+1)=f(2)-2=16-2=14$

for $n=3: f(4)=f(3+1)=f(3)-2=14-2=12$

for $n=4: f(5)=f(4+1)=f(4)-2=12-2=10$

7 0

2 years ago

Read 2 more answers

Beinggreat78 answer fast please :')

Dovator [93]

Answer:

17662.5 sq. feet

Step-by-step explanation:

We know that the formula for Area of a Circle is $A = \pi (r)^2$ .

r = radius; d = diameter, which is r*2

And so, in the question, it gives you that the diameter is 150, first we divide it by 2 to get the radius.

150/2 = 75

The question said to keep $\pi$ =3.14, so then we plug in the equation-

$A = 3.14 * 75^2$

Then we use PEMDAS [Parenthesis; Exponents; Multiply & Divide; Add & Subtract] which would get us-

$A = 3.14 * 5625$ (first doing the Exponent)

And we continue-

$A = 17662.5$ (then multiple)

So our answer is-

17662.5 sq. feet

I hope this helps!
Please give brainliest!

Have a great day

3 0

1 year ago

Read 2 more answers

Write (5,0) with a slope of 2 in point-slope form.

neonofarm [45]

Y = mx + c
m = 2
y = 2x + c

At (5, 0)
0 = 2(5) + c
c = -10

y = 2x - 10

3 0

3 years ago