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Aleks04 [339]
3 years ago
5

Mark simplified 3/5 divided by 5/8; his work is shown below. Identist where he made his error.

Mathematics
1 answer:
dolphi86 [110]3 years ago
4 0

Answer:

Mark forgot to multiply 5 · 5, so he ended up with 5 in the denominator instead of 5 · 5 = 25

Step-by-step explanation:

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nevsk [136]
C is the correct answer because you can take out a 3 of both numbers and a y of both numbers
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4 years ago
Some parts of California are particularly earthquake- prone. Suppose that in one metropolitan area, 25% of all homeowners are in
aleksandrvk [35]

Answer:

a. Binomial random variable (n=4, p=0.25)

b. Attached.

c. X=1

Step-by-step explanation:

This can be modeled as a binomial random variable, with parameters n=4 (size of the sample) and p=0.25 (proportion of homeowners that are insured against earthquake damage).

a. The probability that X=k homeowners, from the sample of 4, have eartquake insurance is:

P(x=k) = \dbinom{n}{k} p^{k}(1-p)^{n-k}\\\\\\P(x=k) = \dbinom{4}{k} 0.25^{0}\cdot0.75^{4}

The sample space for X is {0,1,2,3,4}

The associated probabilties are:

P(x=0) = \dbinom{4}{0} p^{0}(1-p)^{4}=1*1*0.3164=0.3164\\\\\\P(x=1) = \dbinom{4}{1} p^{1}(1-p)^{3}=4*0.25*0.4219=0.4219\\\\\\P(x=2) = \dbinom{4}{2} p^{2}(1-p)^{2}=6*0.0625*0.5625=0.2109\\\\\\P(x=3) = \dbinom{4}{3} p^{3}(1-p)^{1}=4*0.0156*0.75=0.0469\\\\\\P(x=4) = \dbinom{4}{4} p^{4}(1-p)^{0}=1*0.0039*1=0.0039\\\\\\

b. The histogram is attached.

c. The most likely value for X is the expected value for X (E(X)).

Is calculated as:

E(X)=np=4\cdot0.25=1

6 0
3 years ago
An 8ft length of 4 inch wide crown molding costs $15. How much will it cost to buy 24 ft of crown molding?
Sauron [17]

Answer: 123$

Step-by-step explanation:

I dont even know but this gives me free five points

8 0
3 years ago
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HELP PLZZZ will give branliesstttttt Triangle congruence with sss asa aas sas
miskamm [114]

Answer:

1) Not congruent

2) AAS

3) Not congruent

4) SAS

5) SSS

6) ASA

Step-by-step explanation:

In SSS, ASA, AAS, and SAS, S stands for side and A stands for angle.  If the sides and angles are congruent in any of those patterns, the triangles are congruent.

Hope it helps <3

7 0
4 years ago
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PLease help me out with this...I will mark the first one as the brainiest answer.
Slav-nsk [51]
You cannot add row 2 to column 3 because they have different dimensions. You can do any of the other operations, but the only one that makes any sort of sense is ...
  Multiply row 2 by -1 and add it to row 3

_____
It makes no sense to multiply a row by zero. That makes the entire row zero and makes the matrix useless for finding any sort of solution.

You can switch columns, but that doesn't get you any closer to a solution here.

If I were trying to find a solution, I might
  switch rows 1 and 2
  multiply the new row 1 by -3 and add it to the new row 2
  multiply the new row 1 by 2 and add it to row 3
This sequence of operations will make the first column [1 0 0], reducing the problem to 2×2 from 3×3.
3 0
4 years ago
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