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3 years ago

Sqrt {50}*'\sqrt {6}

Mathematics

1 answer:

Evgesh-ka [11]3 years ago

7 0

We have $\sqrt{50} *\sqrt{6}=\sqrt{300}$
$\sqrt{300}=\sqrt{100*3}=10\sqrt{3}$
$10\sqrt{3}$ is your answer.

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16x² +8-7x-3x2 - 13x

liq [111]

Answer:

$13x^{2}$ -20x+8

Step-by-step explanation:

Step 1: rearrange the equation

16x^2 - 3x^2 - 7x - 13x +8

Step 2: solve the equation

16x^2 - 3x^2 = 13x^2

-7x - 13x = -20x

(the +8 will stay the same)

so when we put it all together it gives us

13x^2 - 20x + 8

5 0

3 years ago

The product of (3 − 4i) and____is 25.

LiRa [457]

$(3-4i)(a+bi)=25\qquad\text{use FOIL method}\\\\(3)(a)+(3bi)+(-4i)(a)+(-4i)(bi)=25+0i\\\\3a+3bi-4ai-4bi^2=25+0i\\\\3a+3bi-4ai-4b(-1)=25+0i\\\\3a+3bi-4ai+4b=25+0i\\\\(3a+4b)+(3b-4a)i=25+0i\\.\qquad\qquad\qquad\qquad\Downarrow\\\\3a+4b=25\ and\ 3b-4a=0\\\\3b-4a=0\qquad\text{add 4a to both sides}\\\\3b=4a\qquad\text{divide both sides by 3}\\\\b=\dfrac{4}{3}a\qquad\text{substitute it to the first equation}\\\\3a+4\left(\dfrac{4}{3}a\right)=25\\\\3a+\dfrac{16}{3}a=25\qquad\text{multiply both sides by 3}$

$9a+16a=75\\\\25a=75\qquad\text{divide both sides by 25}\\\\\boxed{a=3}\qquad\text{put the value of a to}\ b=\dfrac{4}{3}a:\\\\b=\dfrac{4}{3}(3)\\\\\boxed{b=4}\\\\Answer:\ \boxed{(3-4i)\underline{(3+4i)}=25}$

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3 years ago

Which pf the following show 2/8=1/4?

Maksim231197 [3]

Answer:

Step-by-step explanation:

Don't know every option makes sense.

I think I will go with A because the size of the shape remains the same.

//Not sure.

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4 years ago

What is 680 divided by 96

Evgen [1.6K]

680/96
= 7.1
Invest in a calculator

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3 years ago

What is the area of the triangle? 13 10 12 units

OLEGan [10]

10 and 12 you never get the number that’s on the slanted side I learned this but I forgot if u add or multiply but the digits that should be used r 10 and 12

7 0

3 years ago