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UNO [17]
3 years ago
10

Factor the expression. 21x2 + 55x + 14

Mathematics
2 answers:
ladessa [460]3 years ago
8 0
(7x+2)(3x+7)

Is the 2 an exponent or variable?
Bas_tet [7]3 years ago
3 0

Answer:

(3x + 7)(7x + 2)

Step-by-step explanation:

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Karen is starting a career as a professional wildlife photographer and plans to photograph Canadian Geese at one of the staging
balandron [24]

Answer:

$5000*0.816 = $4082

Step-by-step explanation:

It's a strange question, but based on the statement and the question it sounds like it's a poisson distribution:

* For 3 days she was able to get 2 good shots (<em>typical of that time of the year</em>)

* Good shots happen randomly

* Each day is independent of another

Let's call 'p' the probability that she makes a good shot per day

Let's call 'n' the number of days Karen is taking shots.

So, if in 3 days he got 2 good shots and that is typical at that time of the year, then the expected value for the number of good shots (X) is:

E(x)=\frac{2}{3}

For a Poisson distribution E (x)=\lambda\\\lambda= np

So:

\lambda =\frac{2}{3}

For a Poisson distribution the standard deviation is:

\sigma = \sqrt{\lambda}\\\sigma = \sqrt{\frac{2}{3}}

\sigma = 0.816 this is the standard deviation for the number of buentas taken.

So the standard deviation for income is the price of each shot per sigma

$5000*0.816 = $4082, which is the desired response.

3 0
3 years ago
Leanne earned $400 and $550 in interest the last 2 years. How much interest must she earn this year so that her average earnings
polet [3.4K]

Answer:

850

Step-by-step explanation:

400+550+850=1800. 1800/3= 600

3 0
3 years ago
The price of an item yesterday was $120 . Today, the price fell to $54 . Find the percentage decrease.
Nesterboy [21]

Answer:

magnitude of decrease = 120 - 54 = 66$

the percentage = (66/100)×100 = 66%

8 0
4 years ago
Point C. is the mid Point of
aivan3 [116]

SOLUTION

Given B is the midpoint of AC ABBC 1 and C is the midpoint of BD BCCD2 ie on adding 1 and 2 ART We get ABBCBCCD hence ABCD hence proved

7 0
2 years ago
What is -12 subtracted from the sum of -19 and 11?
Sauron [17]

Answer:What is -12 subtracted from the sum of -19 and 11?

Step-by-step explanation: 4 IS YOU ANSWER

3 0
4 years ago
Read 2 more answers
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