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stellarik [79]
3 years ago
5

A culture started with 5,000 bacteria. After 4

Mathematics
1 answer:
Tresset [83]3 years ago
7 0

Answer: After 13 (12) hours, there would be 6,500 bacteria across the culture.

Step-by-step explanation:

The bacteria grew by 500 each 4 hours, so to know how much there would be 13 hours later:

Simple, add 500 bacteria to every 4 hours until you reach 13 hours. 4 = 5.5k, 8 = 6k, 12 = 6.5k. Now, 12 is closer to 13 than anything we would've gotten if we kept going.

And there's your answer.

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From the following numbers, select all that are rational.<br>A.6/7<br>B. 0.62<br>C. 0.6<br>D. 0.6π​
uysha [10]

Answer:

All those canbe expressed in the form of p/q, where q≠0 are rational

clearly A is rational

now 0.62 =62/100=31/50----its also rational

and 0.6 =6/10=3/5--- it's also rational

0.6π =(3/5)π, 3/5 is rational but π is irrational so overall it's irrational!

A,B&C are rational!

✌️:)

8 0
3 years ago
The graph shows how the height of a balloon is changing over time.
Inessa05 [86]

Answer:

B. The rate at which the balloon is rising.

Step-by-step explanation:

Mathematically speaking, the slope of the line represents the change in dependent variable (Height) divided by the change in independent variable (Time). According to the graph, a postive change in time leads to a positive change in height, meaning that slope is positive. Physically speaking, the slope represents the rate of change at which the height of the ballon is rising.

Hence, correct answer is B.

8 0
3 years ago
Helpp!! 448 divided by 7 step by step please <br><br> Thank you!!
Cerrena [4.2K]
488/7
 Look at the first digit of the dividend. Is there a factor that can be subtracted?
-Not, really so we go to the second digit. Now we're looking at the number 48.
Is there any factor that multiplies by 7 that can be subtracted?
-Yes, and that's 6.
 
Now you do 48-42=6 and drop down the remaining digits in the dividend.
- You are left with 68
Ask yourself again, is there any factor i can multiply by 7 that can be subtracted?
-Yes, and thats nine.
Subtract again and you are left with 5.
Since there's no more number from the dividend to drop down, you put a zero and keep multiplying.

i've ran outta time so the answer is : 69.7142857143

Hope you understood what i wrote.


5 0
3 years ago
Read 2 more answers
WILL GIVE BRAINLIEST IF ANSWERED CORRECTLY <br><br> Find the area and perimeter of the object:
attashe74 [19]

Answer:

Perimeter: 79 ft.

Area: 352 ft.

Step-by-step explanation:

Perimeter: 22+22+16+16 = 79 ft.

Area: 22 × 16 = 352 ft.

4 0
3 years ago
(6x - 3y) -2(x + 4y)
bezimeni [28]

Answer:

4x-11y

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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