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maxonik [38]
2 years ago
6

Which expression is equivalent ​

Mathematics
1 answer:
babunello [35]2 years ago
6 0

Answer:i think its the second choice sorry if im wrong

Step-by-step explanation:

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The weights of red delicious apples are approximately normally distributed with a mean of 9 Ounces and a standard deviation of 0
Simora [160]

Answer:

The mean of W is 55 ounces.

The standard deviation of W is 4.33 ounces.

Step-by-step explanation:

Let X: weight of a red delicious apple, and B: the weight of the box and packing material.

The distribution that will represent W: the total weight of the packaged 5 randomly selected apples will be also normally distributed.

Applying the property of the mean: E(aX)=aE(X), the mean of W will be:

\mu_W=E(W)=E(5X+B)=5E(X)+E(B)=5*9+10=45+10=55

Applying the property of the variance: V(aX+b)=a^2V(X), the variance of W will be:

\sigma^2_W=V(W)=V(5X+B)=5^2V(X)+V(B)=25*0.75+0=18.75

The mean standard deviation of W will be the squared root of V(W):

\sigma_W=\sqrt{V(W)}=\sqrt{18.75}=4.33

The mean of W is 55 ounces.

The standard deviation of W is 4.33 ounces.

3 0
3 years ago
HELP PLSS !!! Will mark as brainiest
Natasha_Volkova [10]

Answer:

1709.92cm^3

Step-by-step explanation:

V=\pi r^2h=\pi *3^2*7=197.92cm^2 (cylinder)

V=whl=14*9*12=1512cm^3(rectangular prism)

197.92+1512=1709.92cm^3(whole shape)

5 0
2 years ago
What is the first step to solve this equation:<br> -3x + 12 = -40
ElenaW [278]

Answer:

Your supposed to cancel out 12 on both sides so u subtract 12 on both sides so the equation would be

-3x= -52

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
At a fabric store, the probability that a customer buys thread is 0.15. The probability that a customer buys a needle given that
Sveta_85 [38]

Answer:

The correct statement is:

C. Buying a needle and buying a thread are dependent events.

Explanation:

The first statement is incorrect because the given events are dependent on each other because the probability that a customer buys a needle given that the customer buys thread is 0.25.

The second statement is incorrect because we cannot say all those who buy a thread also buy a needle.

The fourth statement is incorrect because the probability that a customer buys a needle and thread is 0.25 \times 0.15=0.0375



8 0
3 years ago
It’s not supplementary does anyone know what it is?
Mrac [35]

I agree with your answer "supplementary". The two angles combine to form 180 degrees, aka a straight angle

Your teacher seemed to have made a typo.

3 0
3 years ago
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