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nlexa [21]
1 year ago
14

Which statement correctly explains how Andre could find the solution to the following system of linear equations using eliminati

on?Multiply the first equation by –7 and the second equation by 8, and then subtract.Multiply the first equation by -7 and the second equation by 8, and then add.Multiply the first equation by 2 and the second equation by 9, and then add.Multiply the first equation by –2 and the second equation by 9, and then subtract.Which statement correctly explains how Andre could find the solution to the following system of linear equations using elimination?Multiply the first equation by –7 and the second equation by 8, and then subtract.Multiply the first equation by -7 and the second equation by 8, and then add.Multiply the first equation by 2 and the second equation by 9, and then add.Multiply the first equation by –2 and the second equation by 9, and then subtract.
Mathematics
1 answer:
grin007 [14]1 year ago
7 0

umm ,this is too long could you maybe putt it in smaller form so I can answer

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Using the quadratic formula to solve 11x2 – 4x = 1, what are the values of x? StartFraction 2 Over 11 EndFraction plus-or-minus
slamgirl [31]

Answer:

x=\frac{2}{11}\pm\frac{\sqrt{15}} {11}

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form

ax^{2} +bx+c=0

is equal to

x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}

in this problem we have

11x^{2} -4x=1  

equate to zero

11x^{2} -4x-1=0  

so

a=11\\b=-4\\c=-1

substitute in the formula

x=\frac{-(-4)\pm\sqrt{-4^{2}-4(11)(-1)}} {2(11)}

x=\frac{4\pm\sqrt{60}} {22}

x=\frac{4\pm2\sqrt{15}} {22}

x=\frac{2\pm\sqrt{15}} {11}

x=\frac{2}{11}\pm\frac{\sqrt{15}} {11}

therefore

StartFraction 2 Over 11 EndFraction plus-or-minus StartFraction StartRoot 15 EndRoot Over 11 EndFraction

7 0
2 years ago
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Write a function max that has two c string parameters and returns the larger of the two.
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7 0
1 year ago
On average, Betsy read 1 page of her book every 1.5 minutes. Her book has 116 pages. Raymond starts a 94- page book on Saturday
natka813 [3]

Answer:

14 minutes

Step-by-step explanation:

given,

given,

Betsy time taken to read one page = 1.5 minutes

Number of pages in the Betsy book = 116 pages

number of pages in Raymond Book = 94 pages

time taken by the Raymond  to read = 11.38 - 8.30

                                                             = 3.08 hrs

time taken by Raymond = 188 minutes

time taken by Betsy to read book = 1.5 x 116

                                                         = 174 minutes

Raymond take more time than Betsy by  = 188 - 174

                                                                   = 14 minutes

Raymond take 14 minute more than Betsy

4 0
2 years ago
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Add 120% of 465. 
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7 0
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