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Lorico [155]
2 years ago
13

Please help with this linear algebra question.

Mathematics
1 answer:
Stolb23 [73]2 years ago
3 0

Answer:

Hello,

Step-by-step explanation:

\overrightarrow{x}=\overrightarrow{-c}+\overrightarrow{a}+\overrightarrow{b}\\\\=-\overrightarrow{c}+\overrightarrow{a}+\overrightarrow{b}

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Five million bacteria live in an organism. The doubling period is 1.5 hours. How many will there be after:
finlep [7]
We write the generic exponential equation:
 y = A (b) ^ t
 Where,
 A: initial population
 B: growth rate
 t: time in hours.
 Substituting values we have:
 y = 5 (2) ^ ((1 / 1.5) * t)
 For t = 9 hours we have:
 y = 5 (2) ^ ((1 / 1.5) * 9)
 y = 320 million
 For t = 24 hours (one day) we have:
 y = 5 (2) ^ ((1 / 1.5) * 24)
 y = 327680 million
 For t = 2 hours we have:
 y = 5 (2) ^ ((1 / 1.5) * 2)
 y = 12.5992105 million
 Answer:
 
a) t hours?
 
y = 5 (2) ^ ((1 / 1.5) * t)
 
b) 9 hours?
 
y = 320 million
 
c) 1 day?
 
y = 327680 million
 
d) 2 hours?
 
y = 12.5992105 million
8 0
3 years ago
An equipment rental company charges $40 per day to rent a trench digger. A construction crew rented a trench digger for 6 days a
kakasveta [241]

Answer:

  • y = 40x + 30

Step-by-step explanation:

$40 per day represents the slope

<u>Finding the y-intercept:</u>

  • 270 - 6*40 = 30

<u>The function is then:</u>

  • y = 40x + 30
8 0
3 years ago
HELP I NEED HELP ASAP
victus00 [196]

Answer:

B

Step-by-step explanation:

3 0
3 years ago
2=X - 3<br> X=<br> -5-4-3-2-1 0 1 2 3 4 5<br><br> (numbers above are a number line)
Roman55 [17]
-5 -4 -3 -2 -1 0 1 2 3 4 5

2= X -3

2+3=5

X= 5
4 0
3 years ago
Work out 1/2 x 7 giving your answer as a mixed number
irga5000 [103]

Answer:

4\frac{1}{2}

Step-by-step explanation:

This question is basically saying: what is half of 7, or what is 7 divided by 2?

Based on this, it can be written both of the ways as:

»»  \frac{1}{2} of 7  <u>OR</u>  7 ÷ 2

So, just solve using either one and you’ll get 4.5 or 4\frac{1}{2}. But since the question wants the answer to be a mixed number, then choose 4\frac{1}{2}.

Hope this helps! :)

7 0
3 years ago
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