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3 years ago

Help please please !!!!!!!

Mathematics

1 answer:

lyudmila [28]3 years ago

7 0

In each case, you can use the second equation to create an expression for y that will substitute into the first equation. Then you can write the result in standard form and use any of several means to find the number of solutions.

System A
x² + (-x/2)² = 17
x² = 17/(5/4) = 13.6
x = ±√13.6 . . . . 2 real solutions

System B
-6x +5 = x² -7x +10
x² -x +5 = 0
The discriminant is ...
D = (-1)²-4(1)(5) = -20 . . . . 0 real solutions

System C
y = 8x +17 = -2x² +9
2x² +8x +8 = 0
2(x+2)² = 0
x = -2 . . . . 1 real solution

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Answer:

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2 years ago

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3 years ago

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Answer:

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Step-by-step explanation:

<u>Solving in steps</u>

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3 years ago

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Ivanshal [37]

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Step-by-step explanation:

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3 years ago

Select all the sentences that can be represented by the equation 25+p=38 A.25 is more than 38 is p B.25 times as much as p is 38

Natasha2012 [34]

Answer:

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3 years ago