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Art [367]
3 years ago
7

Solve x2 + 8x + 22 = 0 by completing the square.

Mathematics
1 answer:
Liula [17]3 years ago
6 0

Answer:

A)

Step-by-step explanation:

the solution of a squared equation is

x = (-b ± sqrt(b² - 4ac)) / (2a)

in our case

a = 1

b = 8

c = 22

x = (-8 ± sqrt(64 - 88))/2 = (-8 ± sqrt(-24))/2 =

= (-8 ± sqrt(4×-6))/2 = (-8 ± 2×sqrt(-6))/2 =

= -4 ± sqrt(-6) = -4 ± i×sqrt(6)

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Create a linear function f(x), whose graph has the given slope that meets the given condition. Slope of 7,f(7)=1. The equation o
kolbaska11 [484]
For a linear function, you want it in y= mx + b form
They give you the slope your x, and when they say f(7)=1 that's like saying when x=7, y=1, or the ordered pair (7,1). To make it in y=mx+b, you can plug these coordinates in to solve for b. So, 1=7(7)+b, after you plug in slope and your point. Do math, 1=49+b, b=-48
That's how I think it's done
8 0
3 years ago
-7 - -3 HELP PLEASE!!!!!!!!!!!!!!!
True [87]
Answer is -10


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Hehe
7 0
3 years ago
An odd number between 301 and 370 has three different digits. If the sum of its digits is five times the hundreds digit, find th
damaskus [11]
For the answer to the question above, <span> 
5x3 (the hundreds digit)= 15
so 3+x+y=15. 15-3=12. x+y=12.
No even number + odd number can be = 12, so both digits must be odd.
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3+3+9= 15, but there is a double digit, so wrong again. 3+5+7=15. 357 is the answer.</span>
5 0
3 years ago
Linear algebra is a fundamental component of continuum mechanics (and most engineering disciplines). Solve the following matrix
Mars2501 [29]

Answer:

A ) Not orthogonal to each other

B) 50i + 40j + 105k

C) The tensor product is attached below

D ) The value of X = F.X is attached below

Step-by-step explanation:

attached below is the detailed solution of the above problem

A) for the vectors ( u ) and ( v ) to be orthogonal to each other [ U.V has to be = 0 ] but in this scenario  U.V = 4 hence they are not orthogonal to each other

b) The vector normal to plane is gotten by : U x V

= 50i + 40j + 105k

4 0
3 years ago
A middle school student studies the amount of time seventh and eighth graders spend playing video games on the weekend by collec
lesya692 [45]
Yes, the student's theory is correct, because the survey shows that the seventh graders spend more time playing games on the weekend than the eighth graders. 
4 0
4 years ago
Read 2 more answers
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