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sergeinik [125]
3 years ago
12

(3 - i) + (1 - 2i) =

Mathematics
1 answer:
eimsori [14]3 years ago
5 0
(3 - i) + (1 - 2i)
= 3 + 1 - i - 2i
= 4 - 3i
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X<br>81** *34*=246<br><img src="https://tex.z-dn.net/?f=81x%20%2B%201%20%2B%203%7B4x%20%7D%20%3D%20246" id="TexFormula1" title="
anzhelika [568]

Answer:

x=\frac{1}{4}

Step-by-step explanation:

81^{x+1}+3^{4x}=246

81=3^4

Rewrite equation: 3^{4\left(x+1\right)}+3^{4x}=246

3^{4\left(x+1\right)}=3^{4x}\times 3^4

3^{4x}\times 3^4+3^{4x}=246

Factor out 3^{4x}:

3^{4x}\left(3^4+1\right)=246

Divide both sides by (3^4+1):

\frac{3^{4x}\left(3^4+1\right)}{3^4+1}=\frac{246}{3^4+1}

3^{4x}=\frac{246}{3^4+1}

3^{4x}=\frac{246}{82}

3^{4x}=3

Anything to the power of 1 is itself. Hence,

4x=1\\

x=\frac{1}{4}

3 0
3 years ago
70 points
Firlakuza [10]

Answer:

A

Step-by-step explanation:

-3x²y² × y⁴x³

When multiplying, add the exponents:

-3x⁽²⁺³⁾y⁽²⁺⁴⁾

-3x⁵y⁶

Answer is A.

6 0
3 years ago
Read 2 more answers
12w=-8(-4w=10) please help
blsea [12.9K]

Answer:

w=4

Step-by-step explanation:

so assuming that that is a plus sign instead of an equal sign it would be 4

3 0
3 years ago
Read 2 more answers
If 540 people preferred pizzia, how many people preferred hamburgers
Licemer1 [7]

Answer:

900 people preferred hamburgers.

Step-by-step explanation:

540/x=60/100

cross multiply

60x=54,000 then

60x/60=54,000/60

x=900

so 900 people preferred hamburger

8 0
3 years ago
A university has 28,980 students. In a random sample of 180 students, 12 speak three or more languages. Predict the number of st
anygoal [31]
Word | know | Unknown
Language| 12 | x
Total | 180 | 28980
Use cross multiply:
12(28980) = 180(x)
347760 = 180x
347760/180=1932
5 0
3 years ago
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