1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ierofanga [76]
4 years ago
7

Check these answers please... include explanations whenever possible and evaluate each answer & the work. If i get something

wrong, give an explanation for it and the correct answer. (questions in attachment)

Mathematics
1 answer:
Diano4ka-milaya [45]4 years ago
8 0
The first one is 17.7 after rounding off
a2+b2=c2
b2=19^2-7^2
b=17.664
The second one is 108
Volume of a prism=base area x length
=(1/2 x12.6x1.6) x 10.75
=108.36mm3
You might be interested in
What percent of 20 is 16?!!!<br><br>What's the answer and how do I work the problem out?!!
-Dominant- [34]

<span>16/20 is 80%.</span>

You find out by multiplying the denominator: 20 * 5 = 100

Then, you do the same to the numerator which is: 16 * 5 = x

So, x = 80%

Hope this helps! :D

7 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
What is 674×673×142÷3​
anzhelika [568]

Step-by-step explanation:

674 \times 673 \times 142 \div 3 \\  \\ =  674 \times 673 \times 142  \times  \frac{1}{3}  \\  \\  = 64,411,484\times  \frac{1}{3}   \\  \\  = 21,470,494.7 \\

8 0
4 years ago
Need of helpp for my test​
katrin [286]

Answer:

-2

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
What does the A equal to in a + (-7) = 3
Korolek [52]
A = 10

Step by step

3+7=10
10+(-7)=3
7 0
3 years ago
Other questions:
  • A factory made about 75,000 robots last year. The actual number of robots made was rounded to the nearest thousand. What is the
    11·2 answers
  • What is the SI unit for measuring velocity
    9·1 answer
  • Find the least common multiple of 16 , 21, and 24
    11·1 answer
  • PLZ HELP!!!!!!! <br><br> Evaluate.<br><br> 43−4÷2⋅5<br><br> 20<br> 40<br> 54<br> 150
    9·2 answers
  • If $650 is invested in a bank account that earns a nominal 2.5% yearly interest, compounded quarterly, then how much is the inve
    14·1 answer
  • BEST ANSWER GETS BRANLIEST AND 100 POINTS<br><br><br> Simplify (√3+√48)(√2−√5).
    13·2 answers
  • a. Find the probability of randomly selecting a student who spent the money, given that the student was given four quarters. The
    9·1 answer
  • Use distributive property to solve, show all steps <br> 3(2x-6)
    5·2 answers
  • A pillow that usually costs $18 is marked down 25%. Which expressions can be used to find the new price of the pillow? Check all
    15·2 answers
  • Which team has the best record? Explain how you know. a. Jules' Rules; For every three games that they played, they only lost 1.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!