So you do 79+89+90=258 then you take 258/3=9.3 so you would get a 93% test average
Hope this helps
Answer:
800
Step-by-step explanation:
In order to get the new population of bacteria in <em>690 minutes</em>, you have to know how often the bacteria will divided in the time frame. So, you have to <em>divide </em><em>690 minutes </em><em>by </em><em>230 minutes.</em>
- 690 min. ÷ 230 min. = 3 times
The bacteria wil<u>l double its colony 3 times in 690 minutes</u>.
- <em>First division:</em> 100 x 2 = 200 bacteria
- <em>Second division:</em> 200 x 2 = 400 bacteria
- <em>Third division:</em> 400 x 2 = 800 bacteria
Therefore, the population of bacteria will be 800 in 690 minutes.
Answer:
2 1/3 - -3 1/4 = 2 1/3 + 3 1/4 = 5 7/12
-1.25*-3 1/4 = 4.0625
Step-by-step explanation:
The greatest difference will be two numbers which subtracted give the largest value.
2 1/3 - -3 1/4 = 2 1/3 + 3 1/4 = 5 7/12
This is the greatest value because it is the greatest number and the least number.
The greatest product will be -1.25 and -3 1/4 since both numbers are negative they give a positive solution.
-1.25*-3 1/4 = 4.0625
Answer:
4
Step-by-step explanation:
Answer:
Let x be the total number of children in the class.
Two–thirds of the children in the fourth–grade class are girls, and there are 12 girls so that
(2/3)x = 12
x = 12/(2/3)
= 12(3/2)
= 18.
The total number of children in the class is 18.
Step-by-step explanation: