3 years ago

Perform the indicated operations. Write the answer in standard form, a+bi. (8 - i)^2 + (8 + i)^2

Mathematics

1 answer:

ArbitrLikvidat [17]3 years ago

4 0

Answer:

${(8 - i)}^{2} + {(8 + i)}^{2} \\ \\ thank \: you$

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3 years ago

Each equation given below describes a parabola. Which statement best compares their graphs? X=2y^2 X=8y^2

timurjin [86]

Answer:

D)Both parabolas open to the right, and $x=2y^2$ is wider than $x=8y^2.$

Step-by-step explanation:

Standard equation of parabola :

$y=a(x-h)^2+k.$

If a < 0, then the parabola open downwards and if a > 0, then the parabola open upwards.

$x=a(y-k)^2+h$

If a < 0, then the parabola open left and if a > 0, then the parabola opens right

Given equations : $X=2y^2$ and $X=8y^2$

$x=2(y-0)^2$ and $x=8(y-0)^2$

in both the equations a>0

So, Both parabolas are open to the right.

Refer the attached graph

$x=2y^2$ ---- Red

$x=8y^2$ --- blue

So, $x=2y^2$ is wider than $x=8y^2.$

So, Option D is true

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4 years ago

What is the type of polynomial?<br> 4x^5 - 3x^3

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3 years ago

Sarah earns a 5% commission for each house she sales. Write an equation that relates Sarah's total incomes (T), if she has a bas

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Answer:

$T = 25000 + 0.05x$

Step-by-step explanation:

Given

$Salary = 25000$

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Required

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The equation can be written as:

$Total (T) = Salary + Commission * Sales$

This gives

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Convert percentage to decimal

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3 years ago

A studio is buying four (4) MP3 players for $129.55 each. Estimate the least number of $100 bills needed to buy the MP3 players.

Dahasolnce [82]

Answer:

6 bills

Step-by-step explanation:

129.55*4 = $518.20

you have to round up since it is over $500 so its 6 $100 bills

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3 years ago

Read 2 more answers