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Evgesh-ka [11]
4 years ago
14

Write the expression in standard form. -3 + yi = x + 6i

Mathematics
1 answer:
tangare [24]4 years ago
4 0

Answer:

The expression in standard form is -3 + 6i

Step-by-step explanation:

Writing complex equation in standard form we have;

-3 + yi = x + 6i

We transfer the real and imaginary parts to be on different sides of the equation as follows;

yi - 6i = x + 3

We factorize the imaginary part;

i(y-6) = x + 3

We note that the real portion on the left hand side of the equation is zero, therefore, we have;

i(y-6)  + 0= x + 3

x + 3 = 0

Therefore, x = -3

Substituting the value of x in the first equation, we have;

-3 + yi = -3 + 6i

Comparing gives;

y = 6

The expression in standard form is -3 + 6i.

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−5/8+3/4 equals what, In fraction form.
kipiarov [429]

How to get answer by Mimiwhatsup (In Decimal Form):

-5/8+3/4\\\mathrm{Divide\:the\:numbers:}\:5\div \:8=0.625\\=-0.625+3\div \:4\\\mathrm{Divide\:the\:numbers:}\:3\div \:4=0.75\\=-0.625+0.75\\\mathrm{Add/Subtract\:the\:numbers:}\:-0.625+0.75=0.125\\=0.125

Answer in Fraction Form: \frac{1}{8}

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3 years ago
​ This table shows the times, in minutes, it took 40 sixth-grade students to run 1 mile.
AveGali [126]
Look up how to make a histogram and put all the numbers 10 and 12 or whatever
5 0
3 years ago
Kelly price sells college textbooks on commission. She gets 8 % on the first $7500 of​ sales, 16% on the next $7500 of​ sales, a
Solnce55 [7]

Answer:

The commission would be $ 920.

Step-by-step explanation:

Given,

Sales in 1997 ​= $ 9500,

Since, there is a commision of 8 % on the first $ 7500 of​ sales, 16% on the next $ 7500 of​ sales, and 20% on sales over $ 15,000,

If x represents the total sales,

Commission for x ≤ 7500 = 8% of x = 0.08x,

Commission for 7500 < x ≤ 15000 = 8% of 7500 + 16% of (x-7500)

= 600 + 0.16(x-7500),

Commission for 7500 < x ≤ 15000 = 8% of 7500 + 16% of 7500 + 20% of (x-15000)

= 600 + 1200 + 0.20(x-15000)

= 1800 + 0.20(x-15000)

Thus, the function that shows the given situation,

f(x)=\left\{\begin{matrix}0.08x & x \leq 7500\\ 600+0.16(x-7500) & 7500 < x \leq 15000\\ 1800+0.20(x-15000) & 15000 < x\end{matrix}\right.

Since, 9500 lies between 7500 and 15000,

Therefore, the commission would be,

f(9500)= 600 + 0.16(9500 - 7500) = 600 + 320 = $ 920

7 0
4 years ago
In the triangle below, which is equivalent to sinA?
Sunny_sXe [5.5K]
1. By definition, you have:

 Sin(α)=Opposite/Hypotenuse

 2. Then, SinA is:

 SinA=BC/AC

 A is the angle in the vertice "A".
 BC is the opposite leg to the the angle A.
 AC is the hypotenuse of the triangle.

 3. By definition, you have:

 Cosα=Adjacent/Hypotenuse

 4. Then, CosC is:

 CosC=BC/AC

 C is the angle at the vertice "C".
 BC is the adjacent leg to the angle C.
 AC is the hypotenuse.

 5. Therefore, the answer is the last option:

 The equivalent to SinA is CosC
5 0
3 years ago
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Solve by the elimination method 4x-2y=32 5x+3y=7​
Maru [420]

Answer:

Point Form:

( − 41 /5 , 16 )

Equation Form:

x = − 41 /5 , y = 16

Step-by-step explanation:

Add the equations in order to solve for the first variable. Plug this value into the other equations in order to solve for the remaining variables.

7 0
3 years ago
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