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yulyashka [42]
2 years ago
8

A kitchen starts with 4 fruit flies and triples in population every day. How many fruit flies

Mathematics
1 answer:
dexar [7]2 years ago
4 0

Answer:

4x3n=Y

Step-by-step explanation:

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6(4x+5)=3(x+8)+3 round to the nearest hundredth
Naddik [55]
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There is supposed to be a bar on the top like a line but I couldn’t put it here so u can put it urself if ur writing it on paper
5 0
3 years ago
Only answer question 2
Bezzdna [24]
B. $30

to find out how much $ she earned per day, all you have to do is divide $2,100 by 70, which is $30.

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3 0
3 years ago
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A person recently read that 84% of cat owners are women. How large a sample should the researcher take if she wishes to be 90% c
Lana71 [14]

Answer:

405

Step-by-step explanation:

To find sample size, use the following equation, where n = sample size, za/2 = the critical value, p = probability of success, q = probability of failure, and E = margin of error.

n=\frac{(z_{\frac{\alpha }{2} })^{2} *p*q  }{E^2}

The values that are given are p = 0.84 and E = 0.03.

You can solve for the critical value which is equal to the z-score of  (1 - confidence level)/2.  Use the calculator function of invNorm to find the z-score.  The value will given with a negative sign, but you can ignore that.

(1 - 0.9) = 0.1/2 = 0.05

invNorm(0.05, 0, 1) = 1.645

You can also solve for q which is 1 - p.  For this problem q = 1 - 0.84 = 0.16

Plug the values into the equation and solve for n.

n =\frac{(1.645)^2*0.84*0.16}{(0.03)^2}\\n= 404.0997333

Round up to the next number, giving you 405.

6 0
3 years ago
Please can you help me with this because I had to post twice
steposvetlana [31]

Answer:

y=11

Step-by-step explanation:

3y=y+22

3y-y=y-y+22

2y=22

y=11

4 0
2 years ago
Help asap plzz<br> -3x + 7 = -8
viva [34]

Answer:

x=5

Step-by-step explanation:

-3x+7=-8

Bring 7 to the other side, it becomes negative

-3x=-8-7

Signs are same on rhs so u add

-3x = -8+-7= -15

Bring -3 to the other side n divide

therefore,

x=-15/-3

= +5 (two negatives become positive)

Hope it helps!

8 0
2 years ago
Read 2 more answers
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