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SCORPION-xisa [38]
3 years ago
6

Please help, the first part is x squared, if people need clarification

Mathematics
1 answer:
Ainat [17]3 years ago
6 0
Use the quadratic formula .
x^2-2x+11=0
a=1
b=-2
c=11

x=-2+- (-2)^2-4*1*11 divided by 2
x=2+- the square root of -40 divided by 2
There is no real solutions
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What is the true solution to In 20+ In 5= 2 In x?<br> x=5. A<br> X= 10 b<br> X=50 c<br> X= 100 d
lions [1.4K]

ln(20) + ln(5) = 2 ln(<em>x</em>)

ln(20×5) = ln(<em>x</em> ²)

ln(100) = ln(<em>x</em> ²)

100 = <em>x</em> ²

<em>x</em> = 10

4 0
3 years ago
Is 11 a rational number
Rainbow [258]

Answer:

It is a fraction that represents one integer (1) being divided by a second integer (11). The fraction 1/11 is a rational number. It is a fraction that represents one integer (1) being divided by a second integer (11).

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3 years ago
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The equation modeling the population growth of a small town is P(t)=30000(1.02)^t, where P represents the population, and t repr
dlinn [17]

Answer: I’m not for sure but I got 31,212

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3 0
3 years ago
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Can you help me? sin 35 (degrees) Thanks!
Nata [24]
<span>OK, here's a *very* approximate "creative" method: 
</span><span>
sin(a+b)=sin(a)cos(b) + cos(a)sin(b) </span>
<span>
choose a=30deg and b=5deg </span>
- sin(a)=0.5 (exact) 
- b is a small number so we say sin(b)~b (in radians). We can do a long division for this: 3.14/36 = 0.087 radians 
- similarly, for b sufficiently small, cos(b)~1 
<span>- now we only need cos(a) = sqrt(3)/2. We can approximately calculate sqrt(3) as 1.73, (by trial-and-error or better, by using the Babylonian method;  so sqrt(3)/2 = 0.865 </span>
<span>
Finally, sin(30 + 5) = (0.5 x 1) + (0.087 x 0.865) = 0.575 (calculating more digits is of no use because the sin(b)=b and cos(b)=1 are quite inaccurate approximations). </span>

<span>So that wasn't all too much effort, and we're close to the correct answer (0.574)


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
</span>
8 0
3 years ago
Given that log(7) = 0.8451, find the value of the logarithm:<br><br> log (1/7000)
Anni [7]
The solution to the problem is as follows:

<span>log(1/7000)

= log1 - log7000

= -log(7*10^3)

= -log7 + log10^3

= -log7 + 3

= 0.8451 + 3
</span>
I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
4 0
3 years ago
Read 2 more answers
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