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3 years ago

Which expression is the equivalent to (4+7i)(3+4i)

Mathematics

1 answer:

murzikaleks [220]3 years ago

4 0

Answer:

-16 + 37i

Step-by-step explanation:

First expand.

You get 12 + 16i + 21i + 28i^2.

Because $i=\sqrt{-1}$ , you get 12 + 37i - 28 or -16 + 37i. $\blacksquare$

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What are the factors of the square root of 329

Andru [333]

Answer: $x=-\dfrac{3}{2}, 7$

Step-by-step explanation:

$2x^2-10x-26=x-5$

$2x^2-10x-26-x+5=0$ Move all terms to one side

$2x^2-11x-21=0$ Simplify $2{x}^{2}-10x-26-x+5$

$2x^2+3x-14x-21=0$ Split the second term

$x(2x+3)-7(2x+3)=0$ Factor out common terms in the first two terms, then in the last two terms.

$(2x+3)(x-7)=0$ Factor out the common term $2x+3$

$x=-\dfrac{3}{2}, 7$

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3 years ago

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Find the area of the shape shown below. 4 2 2 1 units

Hunter-Best [27]

Answer:

Step-by-step explanation:

it's a rectangle of area 2*4=8 minus a triangle of area 1*2/2=1 so 8 - 1 = 7

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3 years ago

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Can you guys please help me? Thanks!

olga2289 [7]

you are correct, it is one to two

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3 years ago

Find an equivalent ratio in simplest terms: 24 : 40

satela [25.4K]

Answer:

An equivalent ratio in simplest term is: 3 : 5

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Solve for q. 3(q − 7) = 27 q =

Whitepunk [10]

Answer:

The answer is, q = 16.

Step-by-step explanation:

1) Divide both sides by 3.

$q - 7 = \frac{27}{3}$

2) Simplify 27/3 to 9.

$q - 7 = 9$

3) Add 7 to both sides.

$q = 9 + 7$

4) Simplify 9 + 7 to 16.

$q = 16$

Therefor, the answer is q = 16.

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