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11111nata11111 [884]
3 years ago
6

A square has sides of 7.5 cm, measured correctly to 1 d. p.

Mathematics
1 answer:
Luba_88 [7]3 years ago
6 0

Answer:

1.45cm

Step-by-step explanation:

I just added

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A sample of bacteria is decaying according to a half-life model. If the sample begins with 800 bacteria, and after 13 minutes th
nikklg [1K]

Answer:

56.42 minutes

Step-by-step explanation:

The initial sample= y0 = 800

After 13 minutes , amount = 320

Y= y0e-kt

320 = 800e-k(13)

320/800 = e-k13

0.4 = e-k13

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-0.91629= -k13

0.07048= k

Y = 800e-0.07048t

Minutes when the bacterial present will be 15

15 = 800e-0.07048t

15/800= e-0.07048t

0.01875 = e-0.07048t

In 0.01875 = -0.07048t

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56.42 = t

56.42 minutes

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3 years ago
Solve: VII multiplied by IX. Show your answer in standard form.
matrenka [14]
7*9
b. 63


v=5 i=1 
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x=10

10-1= 9

9*7= 63

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2 years ago
How many 1/5 liter glasses can fill with 1 1/2 liter bottle of water?
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