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Mariana [72]
3 years ago
8

HELP!!!! PLZ!!! ITS DUE TMW!!!

Mathematics
2 answers:
Katarina [22]3 years ago
4 0
63 69 75 that is what i think
MAXImum [283]3 years ago
3 0
Keep adding six 51+6=57
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How much more is 3 1/4 than 1 3/4
Stels [109]

Answer:

1 and 1/2

Step-by-step explanation:

3 1/4 is equal to 13/4 and 1 3/4 is equal to 7/4. 13/4 - 7/4 is 6/4. 6/4 equalsn is 1 1/2.

4 0
4 years ago
A scientist running an experiment starts with 100 bacteria cells. These bacteria double their population every 15 hours. Find ho
IRISSAK [1]
<h2>Hello!</h2>

The answer is: 23.77 hours

<h2>Why?</h2>

Total(t)=Start*2^\frac{t}{15}

Where:

Total(t) is equal to the amount for a determined time (in hours)

<em>Start</em> is the original amount

<em>t </em>is the time in hours.

For example, it's known from the statement that the bacteria double their population every 15 hours, so it can be written like this:

Total(15)=100*2^\frac{15}{15}=100*2^{1}=100*2=200

To calculate how long it takes for the bacteria cells to increase to 300, we should do the following calculation:

300=100*2^{\frac{t}{15} } } \\\frac{300}{100}=2^{\frac{t}{15} } }\\log(3)=log(2^{\frac{t}{15} })\\\\\\log(3)=\frac{t}{15}*log2\\t=\frac{log(3)}{log(2)} *15=23.77

So, to know if we are right, let's replace 23.77 h in the equation:

Total(t)=100*2^\frac{23.77}{15}=299.94

and 299.94≅300

Have a nice day!

8 0
3 years ago
Read 2 more answers
The price of an item has been reduced by 85% . The original price was $45. What is the price of the item now.
Kobotan [32]

Answer:the price for the item now it's 6.75


Step-by-step explanation:

Origin price is 45=100% after reduction comes to 85% =x

X stands for the unknown value of the reduction therefore

45=100%

X=85%

45*.85=100x


After calculation you realised the value of x reduction value it's 38.25


Hence, original price is 45 your less from the value reduced 38.25 therefore the value of the item is 6.75

3 0
3 years ago
During a 10 day period the balance of Marta's checking account dropped by $290.Write a division problem during that 10-day perio
Margarita [4]
290÷10=29 ........................

I think
8 0
3 years ago
Read 2 more answers
(11w^4 × 3z^9)(2w^7z^2)​
mart [117]

Simplified:

11w^4(3)z^9(2w^7z^2)

=66w^11z^11

4 0
3 years ago
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