3 years ago

Why does 2+2=5 because I am So confused.

Mathematics

1 answer:

GalinKa [24]3 years ago

7 0

2+2 does not equal 5 2+2=4 not five and also 2+3=5

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Elaine bought 3 4/5 pounds of Apple's for 1.99 per pound. 3/4 pound of pears for2.25 per pound, and 3 2/3 pound of bananas for 1

aleksandr82 [10.1K]

The total money Elaine spent is $15.7
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3 years ago

One variable examined is the survival rate 10 years after tagging. The scientists observed that 10 of the 50 metal tagged pengui

Oksana_A [137]

Answer: 90% confidence interval would be $(-0.2483,-0.0717)$

Step-by-step explanation:

Since we have given that

n₁ = 50

Number of metal tagged penguins survived = 10

So, $p_m=\dfrac{10}{50}=0.2$

n₂ = 50

Number of electronic tagged penguins = 18

So, $p_e=\dfrac{18}{50}=0.36$

So, at 90% confidence interval, z = 1.28

So, interval would be

$(p_m-p_e)\pm z\sqrt{\dfrac{p_m(1-p_m)}{n}+\dfrac{p_e(1-p_e)}{n}}\\\\=(0.2-0.36)\pm 1.28\sqrt{\dfrac{0.2\times 0.8}{50}+\dfrac{0.36\times 0.64}{50}}\\\\=-0.16\pm 0.0883\\\\=(-0.16-0.0883,-0.16+0.0883)\\\\=(-0.2483,-0.0717)$

Hence, 90% confidence interval would be

$(-0.2483,-0.0717)$

6 0

3 years ago

I need to know the answer

GarryVolchara [31]

Answer:so I can help you with that I only in sixth grade

Step-by-step explanation:

4 0

3 years ago

Find the value of y for the given value of x<br> y= 1/2x; x = -18

Romashka [77]

Y=1/2x
y=1/2(-18)
y=-9

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3 years ago

EXPERT HELP: Some species can reproduce sexually or asexually. In which two situations is sexual reproduction advantageous?

ExtremeBDS [4]

answer: B,C

Step-by-step explanation:

to be able to reproduce sexually you need enough of the same species to mate with. A says no individuals to reproduce with but for that it would be better if they were asexual. D says they change living environment and that usually changes the amount of same species animals that are around to reproduce with.

8 0

3 years ago

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