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Leya [2.2K]
4 years ago
15

HELPPP!!! Please help me

Mathematics
1 answer:
Gekata [30.6K]4 years ago
7 0
This graph is not a function.
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A biologist is researching a newly-discovered species of bacteria. He puts 1,000 bacteria into what he has determined to be a fa
Svetradugi [14.3K]
The bacteria grow from <span>1,000 bacteria into 12,500 bacteria in 12 hours.  The exponent function would be:

an= ao(1+r)^t
12.500= 1,000(1+r)^12
1,000(12.5)= 1,000(1+r)^12
</span>12.5= (1+r)^12
1+r= 1.23427
r= 0.23

Number of bacteria after 20hr would be:
an= ao(1+r)^t
an= 1,000(1+0.23)^20
an= 1,000(62.821 <span>)
an= </span><span>62,821 </span>
7 0
4 years ago
Calculate the area of a circle with a diameter of 6cm
USPshnik [31]
Formula for area of circle:
A=πr²
Here diameter, d= 6 cm
Radius, r= d/2 = 6/2 = 3 cm
Put values
A= 3.14 x 3²
A=3.14 x 9
A=28.26 cm²

Answer: 28.26 cm²

7 0
3 years ago
Read 2 more answers
Find the equation of the line that is perpendicular to y = two over three x and contains the point (four,-eight)
Sophie [7]
When it is perpendicular, the slope is the negative reciprocal so it would equal -3/2x. Plug in the points to the equation so you can find the intercept. -8=-3/2(4)+b
Combine: -8=-6+b
Add 6: -2=b
The equation would be f(x)=-3/2x-2
Hope this helped and sorry if I am wrong!
7 0
3 years ago
Mr. Barber uses 7/9 yard of wire to put up a ceiling fan. He uses 1/3 yard of wire to fix a switch How much more wire does he us
Oliga [24]
1/3 is the same as 3/9. To solve this, subtract 3/9 from 7/9.

\frac{7}{9}-\frac{3}{9}= \frac{4}{9}

Your answer is \frac{4}{9}

4 0
3 years ago
Will vote
tia_tia [17]
The answer is 1 to 3
6 0
3 years ago
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