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netineya [11]
3 years ago
6

Solve x2 - 2x + 1 = 0 by using factored form . What solutions do you get

Mathematics
1 answer:
My name is Ann [436]3 years ago
5 0

Answer:

x=3.21 in fraction x=e+1/2

Step-by-step explanation:

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A jewelry store is having a 40% off sale for all necklaces. During this sale, what is the cost of a necklace that regularly cost
ELEN [110]

Answer: 18 dollars

Step-by-step explanation:

0.40 times 45 = 18 dollars

6 0
2 years ago
The Nuthouse offers a mixture of soy nuts and almonds, Almonds
elena55 [62]

Answer:

  14 pounds

Step-by-step explanation:

The given equations can be solved for y by substituting for x. The first equation is convenient for writing x in terms of y.

<h3>Solution</h3>

  x = 20 -y . . . . . . . subtract y from the first equation

  7(20 -y) +5.5y = 119 . . . . . substitute for x in the second equation

  140 -1.5y = 119 . . . . . . . . simplify

  21 = 1.5y . . . . . . . . . . . add 1.5y -119 to both sides

  14 = y . . . . . . . . . . . .divide by 1.5

14 pounds of soy nuts should be used in the mixture.

__

<em>Additional comment</em>

There are many ways to solve a system of two linear equations. The attachments shows a matrix solution using a suitable calculator. It tells us that x=6 and y=14, as we found above.

6 0
2 years ago
Help ! Please !!!!!!!!!!!!!!
Ostrovityanka [42]

Answer:

12a^6b^3 you multiply 4 and 3 to get 12,then you factor out the algebra with the common terms.

4 0
3 years ago
A tent has the dimensions shown in the diagram. Find the area of the groundsheet needed to fit inside the tent. Round your answe
kogti [31]

Apologies if the diagram is a bit confusing

7 0
3 years ago
If sec theta = - √30 / 3, find cos theta.<br> if sin(-theta) = -0.97, find cos (π/2 - theta).
Cloud [144]

Step-by-step explanation:

\cos \theta  =  \frac{1}{ \sec\theta }  =  -  \frac{3}{ \sqrt{30} }  =  -  \frac{3 \sqrt{30} }{30}   =  -  \frac{ \sqrt{30} }{10}

\cos( \frac{\pi}{2} -  \theta )=  \cos \frac{\pi}{2}  \cos \theta  +   \sin \frac{\pi}{2}  \sin \theta

Note that

\sin( - \theta) =  -  \sin \theta

\cos \frac{\pi}{2}  = 0 \:  \:  \:  \:  \:  \sin \frac{\pi}{2}  = 1

Therefore,

\cos( \frac{\pi}{2} -  \theta )  = 0.97

5 0
3 years ago
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