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AnnZ [28]
3 years ago
11

PLEASE HELP ASAP 25 PTS + BRAINLIEST TO RIGHT/BEST ANSWER

Mathematics
1 answer:
irina [24]3 years ago
5 0

Answer:

36 +23i

Step-by-step explanation:

(3+8i) (4-3i)

FOIL

first: 3*4 = 12

outer: 3*-3i = -9i

inner: 8i *4 = 32i

last: 8i * -3i = -24i^2 = -24 (-1) = 24

Add these together

12+-9i+32i +24

Combine like terms

36 +23i

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Answer:

what are the answer choicesss

Step-by-step explanation:

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3 years ago
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Expand.<br> Your answer should be a polynomial in standard form.<br> (3c + 2)(c^2-6c-4)
evablogger [386]

Answer:

After expanding the polynomial (3c + 2)(c^2-6c-4) we get  3c^3-16c^2-24c-8

Step-by-step explanation:

We need to expand the polynomial (3c + 2)(c^2-6c-4)

Multiply the terms:

(3c + 2)(c^2-6c-4)\\=3c(c^2-6c-4)+2(c^2-6c-4)\\=3c^3-18c^2-12c+2c^2-12c-8\\=3c^3-18c^2+2c^2-12c-12c-8\\=3c^3-16c^2-24c-8

So, after expanding the polynomial (3c + 2)(c^2-6c-4) we get  3c^3-16c^2-24c-8

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3 years ago
Write a linear equation in standard form that satisfies the given set of conditions. X-intercept: 3, y-intercept: 5
Artyom0805 [142]

The linear equation in standard form is y=\frac{-5}{3}x +5.

<h3>Linear Function</h3>

An equation can be represented by a linear function. The standard form for the linear equation is: ax+b , for example, y=7x+2. Where:

a= the slope. It can be calculated for  \frac{\Delta x }{\Delta y}.

b= the constant term that represents the y-intercept.

The question gives: X-intercept:3  and  y-intercept: 5. Then,

  • The x-intercept is the point that y=0, then the x-intercept point is (3,0).
  • The y-intercept is the point that x=0, then the x-intercept point is (0,5).

With this information, you can find the slope (a).

a=\frac{\Delta y }{\Delta x}= \frac{0-5}{3-0} =\frac{-5}{3}

The question gives the coefficient b since it gives the y-intercept=5.

Therefore the linear equation is : y=\frac{-5}{3}x +5.

Read more about the linear equations here:

brainly.com/question/2030026

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A pet shop has 25 dogs at the start of the year. In January, 5 dogs were sold and 3 dogs were bought. In February, 8 dogs were s
MariettaO [177]
The number of dogs the store bought in March was 10.
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I need someone help please !!
Masteriza [31]

It is asking for the tangent ratio at B.

In my answer; angle=theta

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tan(theta)= 3/2

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