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3 years ago

I really need help!!!

Mathematics

2 answers:

Licemer1 [7]3 years ago

8 0

Answer:

Step-by-step explanation

cause there are three rooms that need to be painted

Black_prince [1.1K]3 years ago

8 0

Answer:

Step-by-step explanation:

First, you put all of the possiblities for the kitchen.

Then, you multiply 7 by each room which would be 3 so,

3 * 7 = 21

So, 21 is probably your answer.

Lastly, have a great day!

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Which relation by a graph is a function? i cannot fit the 3rd graph in the pic brw

iren2701 [21]

Neither of the graphs in the picture is a function

To be a function it needs to pass the vertical line test, which both of them fail.

8 0

2 years ago

The quantity of a drug in the bloodsteam t hours after a tablet is swallowed is given, in mg, by q(t)=40((e^-t)-(e^-2t))

Ne4ueva [31]

Q(t) = 40((e^-t) - (e^-2t))
For q(t) to be maximum dq/dt = 0
dq/dt = 40(-(e^-t) + 2(e^-2t) = 0
2e^-2t - e^-t = 0
2e^-2t = e^-t
e^t = 2
t = ln 2

q(ln 2) = 40((e^(-ln 2) - (e^(-2ln 2)) = 40(1/2 - 1/4) = 40(1/4) = 10
Therefore, thw maximum amount of drug in the bloodstream at one time is 10 mg.

4 0

3 years ago

Solve;

Brrunno [24]

6446(7546/6799/)85456=gljdhsshdjkhk ghjvf 146

8 0

3 years ago

Hailey sold 20 tickets to the school play for a total of 225$.Early bird tickets were 10$ and regular priced tickets were 15$.Wr

dlinn [17]

Answer:

The system of equation are $\left \{ x+y=20} \atop {10x+15y=225}} \right.$

The number of early bird tickets are 15 and of regular tickets are 5.

Step-by-step explanation:

Given,

Total number of tickets = 20

Total amount = $225

Solution,

Let the number of early bird tickets be 'x'.

And also let the number of regular tickets be 'y'.

Now total number of tickets is the sum of number of early bird tickets and number of regular tickets.

So framing in equation form, we get;

Total number of tickets = number of early bird tickets + number of regular tickets

$x+y=20\ \ \ \ equation\ 1$

Again, Total amount is the sum of number of early bird tickets multiplied with price of each ticket and number of regular tickets multiplied with price of each ticket.

So framing in equation form, we get;

$10x+15y=225\ \ \ \ \ equation\ 2$