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3 years ago

Jenny spent 35 minutes doing research on the Internet. She finished at 7:10p.m. At which time did Jenny start her research?

Mathematics

2 answers:

cricket20 [7]3 years ago

7 0

6:35 P.M. Just go back 35 minutes from 7:10

charle [14.2K]3 years ago

6 0

6:35pm, because 35 minutes before 7:10 pm is 6:35pm :)

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Beaker A contains 1 liter which is 30 percent oil and the rest is vinegar, thoroughly mixed up. Beaker B contains 2 liters which

alekssr [168]

Answer:

1.25 liters of oil

Step-by-step explanation:

Volume in Beaker A = 1 L

Volume of Oil in Beaker A = 1*0.3 = 0.3 L

Volume of Vinegar in Beaker A = 1*0.7 = 0.7 L

Volume in Beaker B = 2 L

Volume of Oil in Beaker B = 2*0.4 = 0.8 L

Volume of Vinegar in Beaker B = 1*0.6 = 1.2 L

If half of the contents of B are poured into A and assuming a homogeneous mixture, the new volumes of oil (Voa) and vinegar (Vva) in beaker A are:

$V_{oa} = 0.3+\frac{0.8}{2} \\V_{oa} = 0.7 \\V_{va} = 0.7+\frac{1.2}{2} \\V_{va} = 1.3$

The amount of oil needed to be added to beaker A in order to produce a mixture which is 60 percent oil (Vomix) is given by:

$0.6*V_{total} = V_{oa} +V_{omix}\\0.6*(V_{va}+V_{oa} +V_{omix}) = V_{oa} +V_{omix}\\0.6*(1.3+0.7+V_{omix})=0.7+V_{omix}\\V_{omix}=\frac{0.5}{0.4} \\V_{omix}=1.25 \ L$

1.25 liters of oil are needed.

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3 years ago

Evaluate the function when x=4

MrRa [10]

The graph of the function is defined in the attached file please find it.

<h3>Graph function:</h3>

$\to \bold{x=4}$

In the given question, the x-axis holds a value that is "4".
The holding value is "4" which is a positive number, and in the graph, it represents the positive value, which is defined in the attached file please find the attached file.

Find out more information about the function here:

brainly.com/question/12406000

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Papessa [141]

9514 1404 393

Answer:

(5x -8) +96 +(5x +2) +4x +4x = 540

x = 25

Step-by-step explanation:

It usually works to follow directions. The sum of angles is ...

(5x -8) +96 +(5x +2) +4x +4x = 540 . . . . An equation

18x +90 = 540 . . . . . . . . . collect terms

x +5 = 30 . . . . . . . . . divide by 18

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