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babunello [35]
3 years ago
8

Y + 6.2x = −13, when x = −4

Mathematics
1 answer:
alexgriva [62]3 years ago
4 0
You would multiply 6.2 by -4 which is -24.8 so then the equation is y+-24.8=-13 then add -24.8 to both sides and it will be y=11.8
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David can finish painting the room in six hours and his elder brother Anthony can finish it in four hours if both brothers paint
lbvjy [14]

Answer:

2.4 hours

Step-by-step explanation:

David's time = 6 hours

Anthony's time = 4 hours

the combined time is given by the following formula

1/ (david's time) + 1/(anthony's time) = 1/total time

1/6 + 1/4 = 1/Total

4/24 + 6/24 = 1/Total

10/24 = 1/ total   (taking reciprocal of both sides)

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5 0
3 years ago
A deer population is declining by 2.2% per year. The population can be modelled using the formula p = 240(0.978)n , where P is t
ale4655 [162]

Answer:

The current deer population is 240.

Step-by-step explanation:

The expression given models a exponential decay follows:

p(n) = 240*(0.978)^n

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The current deer population is 240.

3 0
3 years ago
Evaluate 7j+5-8k when j=0.5 and k=0.25
dlinn [17]

So first you would substitute j and k in the expression.

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Hope this helps!

6 0
3 years ago
Read 2 more answers
What kind of solution(s) do you expect for the linear equation:
Kryger [21]
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3 years ago
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kvasek [131]

Answer:

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Step-by-step explanation:

6 0
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