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posledela
4 years ago
12

James is 13 years older than one half of Abby's age. Monica is one year younger than four times Abby's age. If James and Monica

are the same age, how old are they
Mathematics
2 answers:
Andrej [43]4 years ago
8 0
J = 13+0.5A
M = 4A - 1
Since J = M you can just say
X = 13+0.5A
X = 4A - 1
Merge the equations by getting rid of one of the variables and solve for the remaining variable
Vika [28.1K]4 years ago
5 0
James and Monica are 15 years old and Abby is 4 years old.
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See attachment for the whole question.
KengaRu [80]

Using probability concepts, it is found that:

a) \frac{4}{13} probability of drawing a card below a 6.

b) \frac{4}{9} odds of drawing a card below a 6.

c) We should expect to draw a card below 6 about 4 times out of 13 attempts, which as an odd, it also 4 times for every 9 times we draw a card above 6, which is the third option.

------------------------------

  • A probability is the <u>number of desired outcomes divided by the number of total outcomes</u>.

Item a:

  • In a standard deck, there are 52 cards.
  • There are 4 types of cards, each numbered 1 to 13. Thus, 4 \times 5 = 20 are less than 6.

Then:

p = \frac{20}{52} = \frac{4}{13}

\frac{4}{13} probability of drawing a card below a 6.

Item b:

  • Converting from probability to odd, it is:

\frac{4}{13 - 4} = \frac{4}{9}

\frac{4}{9} odds of drawing a card below a 6.

Item c:

  • The law of large numbers states that with a <u>large number of trials, the percentage of each outcome is close to it's theoretical probability.</u>
  • Thus, we should expect to draw a card below 6 about 4 times out of 13 attempts, which as an odd, it also 4 times for every 9 times we draw a card above 6, which is the third option.

A similar problem is given at brainly.com/question/24233657

7 0
3 years ago
A car salesperson earns a 20% commission for each car she sells. How much will she earn if she sells one car for $24,900 and ano
Anna [14]

Answer:

D. $10,540

Step-by-step explanation:

1. 20% of $24,900 is $4,980

2. 20% of $27,800 is $5,560

3. Add $4,980 to $5,560

4. Answer is $10,540 in commission

7 0
3 years ago
HELP ASAP MARKING AS BRINLIST
weeeeeb [17]

Answer:

Because they are equal (Right angle)

Two figures or objects are congruent if they have the same shape and size, or if one has the same shape and size as the mirror image of the other.

8 0
4 years ago
Read 2 more answers
A researcher measured the heights of forty high-school students. The measurements are recorded here.
lord [1]
63 inches is her height

7 0
4 years ago
Read 2 more answers
HELP ME QUICK PLEASE THIS IS A TEST OMG
xxMikexx [17]

Answer:

It's 1/2,-2 just did the math.

3 0
3 years ago
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