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yarga [219]
3 years ago
5

Give one example of when you would use the friendly numbers strategy to substract

Mathematics
1 answer:
harina [27]3 years ago
8 0
Like when you have 3-3 would be 0
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The relative growth rate for a certain type of bacteria population is 78% per hour. A small culture has formed and in just 5 hou
Blizzard [7]

Answer:

The initial number of bacteria in the culture was 1949

Step-by-step explanation:

The relative growth rate for a certain type of bacteria population is 78% per hour.

As we know the growth of bacteria is exponential function.

P=P_0(1+r)^n

where,

P is population of bacteria after n hours.

P₀ is initial population.

r is rate of growth per hour

n is number of hours

A small culture has formed and in just 5 hours the count shows to be 34,820 bacteria in the culture.

P = 34820 ,  n = 5 , r = 0.78

34820=P_0(1+0.78)^5

P_0=\dfrac{34820}{(1.78)^5}=1948.63

P_0\approx 1949

Hence, The initial number of bacteria in the culture was 1949

3 0
3 years ago
What is x-4y=28 2x+y=2 on a graph
trasher [3.6K]
<span>-4y + x = 28
<span>  y + 2x = 2

hope this helped :)
alisa202</span></span>
3 0
3 years ago
How do you solve this absolute value equation? ∣x−2∣=∣4+x∣
snow_tiger [21]
L x - 2 l = l 4 + x l

Remember : Absolute is just the distance from zero.

Ex : l -4 l turns into 4, as it is 4 spaces away from zero on a number line :)

l x - 2 l turns into x + 2

l 4 + x l stays the same.

So, our equation now looks like this :

x + 2 = 4 + x

So, we're basically just trying to get x by itself.

So, subtract 2 from both sides.

x = 4 + x - 2

Then, subtract x from both sides.

x - x = 4 -2 

0 = 2

Therefore, there are no solutions to this equation :)

~Hope I helped!~
6 0
3 years ago
What’s the answer to this??
Arte-miy333 [17]
Here...
Hope I could help. :)

4 0
3 years ago
HELP PLEASE I need an answer ASAP
quester [9]

Answer:

72/97

Step-by-step explanation:

take angle c as reference angle

to find sin c

sin c = opposite / hypotenuse

sin c = 72 / 97

5 0
3 years ago
Read 2 more answers
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