2 years ago

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

Mathematics

1 answer:

ANTONII [103]2 years ago

4 0

Answer:

the answer is -16+37i

Step-by-step explanation:

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*WILL MARK BRAINLIEST*

nikdorinn [45]

Answer:

3 $\sqrt{5}$ which is approx 6.71

Step-by-step explanation:

$\sqrt{45}$ = $\sqrt{9}$ · $\sqrt{5}$ = 3 $\sqrt{5}$

4 0

2 years ago

PLZ help me fast 2 mins left

jek_recluse [69]

Answer:

$\sqrt{-5}=i\sqrt{5}$

$\sqrt{-25}=5i$

Step-by-step explanation:

i is an imaginary unit, this means

$i^2=-1$

Rewrite -5 as $5\cdot (-1)=5\cdot i^2,$

then

$\sqrt{-5}=\sqrt{5i^2}=\sqrt{5}\cdot \sqrt{i^2}=\sqrt{5}\cdot i=i\sqrt{5}$

Rewrite -25 as $-25=25\cdot (-1)=25\cdot i^2,$

then

$\sqrt{-25}=\sqrt{25\cdot i^2}=\sqrt{25}\cdot \sqrt{i^2}=5\cdot i=5i$

6 0

2 years ago

Which of the following rational functions is graphed below? A. F(x) = B. F(x) = C. F(x) = D. F(x) =

gregori [183]

Answer:

C is the answer

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Jeremy wants to buy a backpack that costs $65. Luckily, the store is having a 35% off sale. What will be the sale price of the b

Leya [2.2K]

Answer:

42.25

Step-by-step explanation:

65*35%=22.75

65-22.75=42.25

7 0

3 years ago

What is the greatest number of planes determined by four collinear points

Sidana [21]

The greatest number of planes determined by four collinear points is ∞ , infinity

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3 years ago