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nalin [4]
3 years ago
8

If a = 8 + 3 root 7 and b = 1/a find a^2+b^2​

Mathematics
1 answer:
Lynna [10]3 years ago
6 0

Answer:

317.49508~317.50

Step-by-step explanation:

a=15.937253933193771

b=7.9686269665968858

a²+b²=(15.937253933193771)²+(7.9686269665968858)²

=(253.99606)+(63.49902)

=317.49508

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3x - 6 = 18 <br>solve for x​
mr Goodwill [35]

Answer:

x=8

Step-by-step explanation:

You move all terms that don't contain x to the right side and solve.

3x-6=18

3x=24

x=8

3 0
3 years ago
Read 2 more answers
A system of equations is shown.<br><br> 0.6d+0.05e=-4.5<br> -0.12d+0.3e=2.76 <br><br> d=<br> e=
Drupady [299]
I would multiply to get rid of the decimals and work with whole numbers.
Since we have numbers that are "hundredths", we would need to multiply every number by 100.
60d + 5e = -450
-12d + 30e = 276 Now that the decimals are gone, if we multiply the second equation by 5 the "d's" will cancel.
60d + 5e = -450
-60d + 150e = 1380
155e = 930
e = 6
Now plug 6 back in for e and solve for d.
60d + 5(6) = -450
60d + 30 = -450
60d = -480
d = -8
(-8, 6)
If you'd rather work it with decimals just let me know.
4 0
3 years ago
Mika used these steps to solve the equation 5x−12=−2+5(x−2)
e-lub [12.9K]
5x−12=−2+5(x−2)
multiply 5 by all in parentheses first
5x - 12= -2 + (5*x) + (5*-2)
5x - 12= -2 + 5x - 10
5x - 12= 5x - 12
if you subtract 5x from one side and add 12 to the other the solution is:
0= 0

This equation is one that is always true. No matter what number you put in for x, it will always be true.

Example:
5x - 12= 5x - 12
5(4) - 12= 5(4) - 12
20 - 12= 20 - 12
8= 8

Example:
5(-100) - 12= 5(-100) - 12
-500 - 12= -500 - 12
-512= -512

This will happen no matter what number x is.

ANSWER: D) All values of x make the equation true.

Hope this helps! :)
5 0
3 years ago
Read 2 more answers
Determine the ordered pair that satisfies the equation, -5x - 6y = -8. A (8 ,−163−163) B (-5 , -6) C (8 , 8) D (5 ,−225−225) E I
hjlf
I'm guessing D, but not too sure.
7 0
3 years ago
I really need help omgggggggg
Vitek1552 [10]

Answer:

The 3rd one  Abc is a congeuent

7 0
3 years ago
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