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Marysya12 [62]
4 years ago
9

Find the real solutions of the equation. 8 x Superscript 2 divided by 3 Baseline minus 63 x Superscript 1 divided by 3 Baseline

minus 8 equals 0 What is the solution​ set? Select the correct choice below and fill in any answer boxes within your choice.
Mathematics
1 answer:
zhenek [66]4 years ago
8 0

Answer:

-((sq.rt.4737)-63)/16 & ((sq.rt.4737)-63)/16

Step-by-step explanation:

8x^2/3 - 63x^1/3 - 8 = 0

Have to use the quadratic formula

(-b +- sq.rt.b^2-4ac)/2a

gives -((sq.rt.4737)-63)/16

and ((sq.rt.4737)-63)/16

where a = 8/3, b = -63/3, & c = -8

hope that's right.

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7 0
3 years ago
Jenny,eric and Boris sent a total of 79 text messages during the weekend Jenny sent 6 fewer messages than Erica Boris sent 3 tim
inna [77]
Lets say that J is for Jennys messages, B is for Boris’ and E is for Erics (or Ericas?).

79 = J + B + E

J = E - 6
B = 3E

Since both Jenny’s and Boris’ number of text messages has some kind of relation to Eric’s number of messages, we can say that:

79 = E - 6 (Jenny) + 3E (Boris) + E (Eric), so:

79 = E - 6 + 3E + E /combine like terms
79 = 5E - 6 /add 6 to both sides
79 + 6 = 5E /switch sides + combine like terms
5E = 85 /divide both sides by 5
E = 85/5
E = 17

So, Eric sent 17 messages. Lets get back to those equations we made for Jenny and Boris:

J = E - 6 = 17 - 6 = 11
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And we can check if it adds up: 51 + 11 + 17 = 79, which is what we were supposed to get.
8 0
3 years ago
Please help, thanks thanks
Marysya12 [62]

Answer:

i think its 2 but im not sure

Step-by-step explanation:

sorry if im wrong

7 0
3 years ago
Read 2 more answers
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