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Bezzdna [24]
3 years ago
10

1

Mathematics
1 answer:
77julia77 [94]3 years ago
4 0
I believe the answer should b the second option :)
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This year, jake is 5 years older than his sister. Three years ago, jake was twice his sisters age. How old is jakes sister now?
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What to do if quadratic equation has a negative spuare root?
alex41 [277]

If the negative square root is found to be one of your solutions, then that is indicative of a pair of imaginary roots (the imaginary i). According to the conjugate rule, if you have one solution that is imaginary, you will have another but with the opposite sign. For example, if a solution to a quadratic is found to be 2 - i, then its conjugate, 2 + i is also a solution. They will ALWAYS go in pairs. Same thing with radical solutions. If one solution is found to be 3+\sqrt{5}

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4 years ago
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Nadusha1986 [10]

Answer:

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Step-by-step explanation:

In y = f(x), swap the variables, then solve for y. The expression you get is f⁻¹(x).

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... x = 2y -10 . . . . . . swapped variables

... x +10 = 2y . . . . . add 10

... (1/2)x + 5 = y . . . . divide by 2

... f⁻¹(x) = (1/2)x + 5 . . . . . . rewrite using function notation

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The answer is A hope this helps 
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3 years ago
Translate the phrase into an algebraic expression 7 more than c
Svetllana [295]

Answer:

Step-by-step explanation:

c+7

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