MATHEMATICS HIGH SCHOOL

If 2+xi=(x+1)+i, what is the value of xand can you please show me the breakdown?

Thanks!

Answers

Answer 1
Answer: 2+xi=(x+1)+i\n\nxi-x=1+i-2\n\nx(i-1)=i-1\ \ \ \ /:(i-1)\n\nx=(i-1)/(i-1)\n\nx=1
Answer 2
Answer: 2+xi=x+1+i\n xi-x=-1+i\n x(i-1)=-1+i\n x=(-1+i)/(i-1)=\nx =(i-1)/(i-1)\n x=1

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The population of Germany is about how many times the population of Martinique?Explain your reasoning.Germany: 8.27*10^7
Martinique: 4.05*10^5

Answers

We have to take the population of Germany divided by the population of Martinique:
(8.27*10^7)/ (4.05*10^5)= 204.198.

Conclusion: The population of Germany is about 204 times as large as the population of Martinique.

Hope this helps~

Find the Area of a circle if the radius is 5.2 cm. AGAIN: State the CORRECT formula, show the substitution and state your answer with the correct label.

Answers

Answer:

area A= πr2

A=π×5.22

A=27.04π

A=84.9486654

I hope this is good enough

Sam is 5 years old. His older brother, Tom, is three times as old as Sam. When Sam is 20, how old will Tom be?

Answers

Sam is 5
Tom is 3 times older so 3*5=15
The difference between them is 15-5=10 years
When Sam is 20 we add the difference 20+10=30, and we have Tom's age :)

Guys pls help me!!!!!!!

Answers

Answer:

The answer is t = 17

Step-by-step explanation:

Sum of angles on a straight line = 180⁰

(2t -7) + 90 + 49= 180

(2t -7) +139 = 180⁰

2t -7) = 180 - 139

2t - 7 = 41

2t = 41 - 7

2t = 34

Divide both sides by 2

t = 17

Solve for x&y
x+y=34
Log base 2 of x + log base 2 of y =6

Answers

x > 0; y > 0;
Log base 2 of x + log base 2 of y =6 <=> log base 2 ( xy) = 6 <=> xy = 64;
but, x + y = 34 => x = 32 and y = 2 or, x = 2 and y = 34.

6. The lengths of two sides of a triangle are 5 cm and 8 cm. Between what two measuresshould the length of the third side fall

Answers

Answer:

triangle inequality: the sum of the length of two sides of a triangle must always be greater than the length of the third side.

we know 2 sides whose sum = 5+8 = 13cm

the 3rd side must be <13 included

the length of the third side must be less than 13 cm, i.e. between 1 and 13 (it cannot be equal to 0 because in this case it does not exist)
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