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3 years ago

6

Makati's class begins social studies at 10 minutes after one in the afternoon. At what time does Makati's class begin social stu

dies?Use A.M or P.M.

2 answers:

Svetach [21]3 years ago

5 0

She starts at p.m ok thank you

jeka943 years ago

4 0

I am not very smart but I am guessing 1:10 p.m. Not sure at all so don't listen to my answer.

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14. A quadratic equation is graphed above.

IrinaVladis [17]

Answer:

D.

Step-by-step explanation:

2=-2，3=-3

2²=-2²，3²=3²

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3 years ago

Persevere with Problems Suppose an online store has an item that costs $50. The item is on sale for 10% off the original price.

ollegr [7]

Answer:

$5

Step-by-step explanation:

To find 10% of $50 we will use 50*0.10 since 10%=.10

the result of this is 5/ $5

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3 years ago

Assume you have such a watch. if a minimum of 18.0% of the original tritium is needed to read the dial in dark places, for how m

laila [671]

Given that the half life of 3H is 12.3 years.

The amount of substance left of a radioactive substance with half life of $t_{ \frac{1}{2} }$ after t years is given by

$N(t)=N_0\left(\frac{1}{2} \right)^{ \frac{t}{t_{\frac{1}{2}} }$

Therefore, the number of years it will take for 18% of the original tritinum to remain is given by

$18 \% = 100 \% \left(\frac{1}{2} \right)^{ \frac{t}{12.3}} \\ \\ \Rightarrow\left(\frac{1}{2} \right)^{ \frac{t}{12.3}} =0.18 \\ \\ \Rightarrow\frac{t}{12.3}\ln\left(\frac{1}{2} \right)=\ln0.18 \\ \\ \Rightarrow\frac{t}{12.3}= \frac{\ln0.18}{\ln\left(\frac{1}{2} \right)} = \frac{-1.715}{-0.6931} =2.474\\ \\ \Rightarrow t=2.474(12.3)=30.4$

Therefore, the number of <span>years that the time could be read at night is 30.4 years.</span>

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3 years ago

It cost $75 to rent a limo, plus $20 per hr. Write an equation to represent the total cost,c, of renting the limo for T hours.

qwelly [4]

We must create the equation from the information. Well, we know that there is a 75 dollar fee right off the top, and there is the word "plus" in the information meaning there will be adding.

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75 + ___ = ?

Now, we must find out what fills in "__." It says that it costs $20 per hour to rent the limo. However, it doesnt tell you how many hours it is being rented for, however it does say that the amount of hours is represented by T. So, fill in that information.

2. Fill in the second number.

75 + 20T = ?

Since there isn't a number to finish the second number to the equation, we know that there isn't going to be a completed answer. So, fill in the final cost with "c" as explained in the equation.

3. Write the answer.

75 + 20T = c

So, the equation to this problem is:

75 + 20T = c

Which is how to find out how much the limo costs to rent it.

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3 years ago

Please help me with this math problem‼️

Alex Ar [27]

Answer:

B

Step-by-step explanation:

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3 years ago