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Likurg_2 [28]
3 years ago
7

What is the SLOPE of the LINES that passes through the points (13,1) and (-2,4 )

Mathematics
1 answer:
olga55 [171]3 years ago
7 0

Answer: M= slope

M= -1/5

Step-by-step explanation:

M= the change in y over the change in x so you would do 1-4 over 13-(-2) which gives you -3 over 15 which is simplified to give you the answer which is -1/5.

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What are the solutions of the quadratic equation (x + 3)(x +3) = 49? Ax = -2 and x = -16 Bx = 2 and x = -10 Cx = 4 and x = -10 D
Ivahew [28]

Answer:

4 and -10

Step-by-step explanation:

\displaystyle (x + 3)(x +3) = 49 \\ x^2+3x+3x+9=49 \\ x^2 +6x+9=49 \\ x^2 + 6x + 9 - 49 = 0 \\x^2+6x-40=0 \\\\ \Delta=b^2-4ac \\ \Delta=6^2-4 \cdot 1 \cdot (-40) \\ \Delta=36+160 \\ \Delta=196 \\ \\ X_{1,2}=\frac{-b \pm \sqrt{\Delta} }{2a}  \\ \\ X_1=\frac{-b+\sqrt{\Delta} }{2a} = \frac{-6+14}{2} = \frac{8}{2}=4 \\ \\ X_2=\frac{-b-\sqrt{\Delta} }{2a}  = \frac{-6-14}{2}=\frac{-20}{2} = -10

4 0
3 years ago
At a water park, 27 out of 90 tickets sold were child tickets. what percentage of the tickets were child tickets?
Alik [6]
You do 27 divided by 90 27/90=0.3 and then move the decimal two places which would give you 30%
3 0
3 years ago
2.<br> - 2x + xy + 5x – 4xy + x
andrezito [222]
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3 years ago
a dvd costs twice as much as a music cd. Jack buys 2 dvds and 2 cds and spends $45. Determine how much one cd costs. in dollars
VMariaS [17]
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One CD costs $7.50.
One DVD costs $15.00.
3 0
3 years ago
Read 2 more answers
50 PTS Simple data i need help with<br><br><br><br><br> incorrect answers will be deleted, sorry.
BARSIC [14]
Hope this helps! let me know if you have any questions

4 0
2 years ago
Read 2 more answers
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