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alukav5142 [94]
3 years ago
9

Factor the expression. 2x^2-7x-15

Mathematics
1 answer:
lutik1710 [3]3 years ago
3 0

Answer:

Factor by grouping

(2x+3) (x-5)

Step-by-step explanation:

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1. if √16 = x, then x^2
vivado [14]
1. A squares and square root cancels

2. CE square root of a perfect square is rational square root of non perfect squares are irrational

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4 0
3 years ago
Sally has decided to spend some time over two days soving math problems. She figures that on the first day she wil be able to so
erastova [34]

A system of equations for this would be

19x + 11y = 273

and

12x + 17y = 283.

X is the amount of minutes to solve one long division problem and y is the amount of minutes to solve a graphing problem.

How To Solve This System of Equations.

Multiply both by 17 and 11 respectively for them to have the greatest common factor for y. So now both equations are:

323x + 187y= 4641

132x + 187y= 3113.

Subtract both equations and you have left:

191x = 1528.

Divide both sides by 191 and you find x.

X = 8.

Answer

It takes Sally 8 minutes to do one Long Division Problem.


Hope this helped. ;)

6 0
3 years ago
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Find csc(angle) if tan(angle) = -4/3 and sin(angle) is positive.
Lerok [7]

Answer:

hm?

Step-by-step explanation:

hm

7 0
3 years ago
2+3!!<br> Help!! Due in an hour!!
Zanzabum

Answer:

5

Step-by-step explanation:

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6 0
3 years ago
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Use the coordinates of the plotted points to complete the calculation below. Pay attention to negative signs.
MArishka [77]

Answer:

  • 3
  • 1
  • -3
  • 1
  • -3

Step-by-step explanation:

The <em>change in y</em> is the difference in y-coordinates between the lower right point and the upper left point. Similarly, the <em>change in x</em> is the difference in the x-coordinates of those points.

  \text{Slope}=\dfrac{\text{change in y}}{\text{change in x}}=\dfrac{\boxed{3}-6}{2-\boxed{1}}\\\\=\dfrac{\boxed{-3}}{\boxed{1}}\\\\\\=\boxed{-3}

7 0
3 years ago
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