MATHEMATICS HIGH SCHOOL

Solve for x:

x2 + 8x = -1

Answers

Answer 1
Answer: x^2+8x=-1\nx^2+8x+16-16=-1\n(x+4)^2=15\nx+4=√(15) \vee x+4=-√(15)\nx=-4+√(15) \vee x=-4-√(15)

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Solve with completing the square method:
6x²-7x+2=0 and  ax²+bx+c=0

Answers

6x ^2-7x+2=0\n \n a=6 , \ b = -7 , \ c=2 \n \n\Delta = b^(2)-4ac = (-7)^(2)-4*6*2=49-48=1 \n \nx_(1)=(-b-√(\Delta ))/(2a) =(7-√(1))/(2*6)=(7-1)/(12) =(6)/(12)= (1)/( 2)\n \nx_(2)=(-b+√(\Delta ))/(2a) =(7+√(1))/(2*6)=(7+1)/(12) =(8)/(12)= (2)/( 3)

(a+b) to the power of two a= -3 and b= 6.

Answers

Answer:

9

Step-by-step explanation:

-3+6 is 3

3*3 is 9

Unsaved Find the surface area of a conical grain storage tank that has a height of 46 meters and a diameter of 16 meters. Round the answer to the nearest square meter.

Answers

The formula for the surface area of a cone is SA= \pi r(r+ √(h^2+r^2) ).  Filling in accordingly, we have SA= \pi (8)(8+ √(46^2+8^2) ) and SA=8 \pi (8+ √(2116+64)).  That will simplify to SA=8 \pi (8+ √(2180) ) and SA=8 \pi (8+46.69047).  If we LEAVE pi in the answer you would have 437.5 \pi which rounds to 438 \pi.  If you multiply pi in, you would have 1375.5 or, rounded, 1376.  Of course those labels are all meters squared.

Cual es el resultado 240÷34

Answers

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Which comes first domain or range

Answers

they are intertwined the domain is the allowed values of the independent varialbles and the range is the allowed values of the dependent variable.
in order for this to work.range comes first because for example a 100-500 range between the phone cost

Solve mathematics problem in photo please! :) First.

Answers

Hello,

Answer B

if 3k+3<0 ==>|3k+3|=-3k-3

==>-3k-3>12
==>-3k>15
==>k<-5

if 3k+3>0 then |3k+3|=3k+3
3k+3>12
==>3k>9
==>k>3
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