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andrezito [222]
4 years ago
9

if you need to know the amount of frosting to put on the outside of the brownies you need to know perimeter area volume which on

e ​
Mathematics
2 answers:
MA_775_DIABLO [31]4 years ago
6 0
You need the area, because area is the space on top of those brownies. If it were perimeter, the frosting would only be put on the edges of the brownies and if it were volume the frosting would be put inside the brownies. :)
kompoz [17]4 years ago
5 0
You would need to find the area of the brownies first and then ice them
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Answer:

Answer: $210 profit

Step-by-step explanation:

275-65 =210

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3 years ago
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Your mom pays you $10 a week plus $5 for every A you make on a test. If you want to make $35 one week, how many A's do you need
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you have to make 5 A's, this is because 35-10=25 25/5=5 and 5x5 = 25 + 10= 35

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The weight of apples is normally distributed. Large apples have a mean of 15 oz and medium apples have a mean of 10 oz. The stan
Leno4ka [110]

Answer:

a) X has a mean of 25 and a variance of 8.

b) The probability that the total weight X is between 22 and 28 oz is 0.711.

Step-by-step explanation:

We have to calculate the mean and variance of a sum of random normal variables.

We can apply the rule for mean and variance for sum of independent variables:

X=L+M\\\\E(X)=E(L+M)=E(L)+E(M)\\\\V(X)=V(L+M)=V(L)+V(M)-2CoV(L,M)=V(L)+V(M)

Then, the mean and variance of X is:

E(X)=E(L)+E(M)=15+10=25\\\\\\V(X)=V(L)+V(M)=2^2+2^2=4+4=8\\\\\sigma_x=\sqrt{V(X)}=\sqrt{8}\approx2.83

We can calculate the probability that X is between 22 and 28 as:

z_1=\dfrac{X_1-\mu}{\sigma}=\dfrac{22-25}{2.83}=\dfrac{-3}{2.83}=-1.06\\\\\\z_2=\dfrac{X_2-\mu}{\sigma}=\dfrac{28-25}{2.83}=\dfrac{3}{2.83}=1.06\\\\\\P(22

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3 years ago
Which is the difference of 6 - (-1).
Savatey [412]
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Answer:

Step-by-step explanation:

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Probability of compound event is probability of first event multiplied by probability of second even

So 1/2×1/2=1/4

Second one is 9/10×1/2=9/20

8 0
3 years ago
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