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3 years ago

Jacpb began work at 7:15. He worked for 6 hours and 30 minutes. what time did he finish work?

Mathematics

2 answers:

zhuklara [117]3 years ago

6 0

I believe 1:45
He started work at 7:15 just add 6 hours to 7 and half-hour to 15 minutes

Oksanka [162]3 years ago

5 0

He finished work at 1:30

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Step-by-step explanation:

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Read 2 more answers

What is the probability

gulaghasi [49]

Answer: Last Option

$P=0.4125$

Step-by-step explanation:

In this case we have a uniform probability. In the graph the horizontal axis represents the possible values of the variable x and the vertical axis represents the probability P(x).

To calculate the probability that x is between 4.71 and 7.4 we calculate the area under the curve.

The horizontal length between 4.71 and 7.4 is:

$7.4-4.1 = 3.3$ .

Then notice that the vertical length in this interval is 0.125.

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$A = lw$

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3 years ago

What is the value of c in the equation y = 4x^2 -10x + c if the y-coordinate of the vertex is -7

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Answer: $c=-\frac{3}{4}$

Step-by-step explanation:

Find the x-coordinate of the vertex with this formula:

$x=\frac{-b}{2a}$

In this case:

$a=4\\b=-10$

Substituting values, we get:

$x=\frac{-(-10)}{2(4)}=\frac{5}{4}$

Now we can substitute the coordinates of the vertex into the equation $y = 4x^2 -10x + c$ and then solve for "c".

Then:

$-7 = 4(\frac{5}{4})^2 -10(\frac{5}{4}) + c\\\\-7+\frac{25}{4}=c\\\\c=-\frac{3}{4}$

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3 years ago