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3 years ago

Help me solve this problem please

Mathematics

2 answers:

Kisachek [45]3 years ago

7 0

The answer is X= -2 1/2

Nana76 [90]3 years ago

4 0

X=-5/2 is the answer

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Are the graphs of the lines in the pair parallel? Explain. <br> y = 3/7x+ 11 –3x + 7y = 13

ankoles [38]

Remember that parallel lines have the same slope.

y=3/7x+11 (in slope intercept form already)

-3x+7y=13 (standard form)

Add 3x to both sides, giving you 7y=3x+13, divide by 7 on both sides, giving

y=3/7x+13/7

Since both equations' slopes' are the same, their graphs will be parallel.

7 0

3 years ago

When studying radioactive material, a nuclear engineer found that over 365 days, 1,000,000 radioactive atoms decayed to 973 co

HACTEHA [7]

Answer:

A. number of decayed atoms = 73.197

Step-by-step explanation:

In order to find the answer we need to use the radioactive decay equation:

$N(t)=N0*e^{kt}$ where:

N0=initial radioactive atoms

t=time

k=radioactive decay constant

In our case, when t=0 we have 1,000,000 atoms, so:

$1,000,000=N0*e^{k*0}$

$1,000,000=N0$

Now we need to find 'k'. Using the provied information that after 365 days we have 973,635 radioactive atoms, we have:

$973,635=1,000,000*e^{k*365}$

$ln(973,635/1,000,000)/365=k$

$-0.0000732=k$

A. atoms decayed in a day:

$N(t)=1,000,000*e^{-0.0000732t}$

$N(1)=1,000,000*e^{-0.0000732*1}$

$N(1)= 999,926.803$

Number of atoms decayed in a day = 1,000,000 - 999,926.803 = 73.197

B. Because 'k' represents the probability of decay, then the probability that on a given day 51 radioactive atoms decayed is k=0.0000732.

4 0

3 years ago

When signing up for a new checking account you answer "No" and opt out of overdraft protection. On this day, you have $10 in you

Rus_ich [418]

Answer:

You may likely be charged an Overdraft fee or amount on each of the transactions carried out by you and you will have to repay the bank the overdrawn amount.

Step-by-step explanation:

Based on the information given we were told that you opt out of an overdraft protection which means that in a situation were you have the amount of $10 in your bank account in which you carried out some transactions with your debit card such as buying lunch for the amount of $12, movie ticket for the amount of $12 and as well dinner for the amount of $15 the end result is that their is likelihood of you to be charged an overdraft fee or an overdraft amount on each of the transaction carried out by you and secondly you will also need to repay or pay back the bank for the amount of money overdrawn which is $29 calculated as :

Amount overdrawn =[($12+$12+$15)-$10]

Amount overdrawn=$39-$10

Amount overdrawn =$29

4 0

3 years ago

Translate this question into an equation What percent of 196 is 49?

Marizza181 [45]

Answer:

P * 196 = 49

Step-by-step explanation:

What percent of 196 is 49

Percent is P

of means multiply is means equals

P * 196 = 49

3 0

3 years ago

Read 2 more answers

What is the measure of angle b?

Natasha2012 [34]

Answer:

Step-by-step explanation:

they are vertical angles

3 0

3 years ago