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Fofino [41]
2 years ago
5

A bag cost $58 more than 2 identical wallets. Mrs Tan paid $632 for 2 identical

Mathematics
1 answer:
vovikov84 [41]2 years ago
6 0

Answer:

8 Wallets cost 8 * 43 = 344 $

Step-by-step explanation:

The text provides us with the following system:

1. B = 2W + 58

2. 632 = 2B + 8W

Which can be re-evaluated to:

1.    B  - 2W = 58

2. 2B + 8W = 632

We multiply 1. with 2 and get:

1.  2B - 4W = 116

We then subtract 1. from 2. and get:

12W = 516 --(:12)--> W = 43

We then insert W = 43 into 1.:

B = 2*(43) + 58

--> B = 86 + 58 = 144

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A survey is taken among customers of a fast-food restaurant to determine preference for hamburger or chicken. Of 200 respondents
kicyunya [14]

Answer:

                          Hamburger       Chicken

Adults                    65                        60         125

children                 55                        20          75

                             120                        80         200

a)What is the probability that a randomly selected individual is an adult?

Total no. of adults = 125

Total no. of people  200

The probability that a randomly selected individual is an adult = \frac{125}{200}=0.625

b) What is the probability that a randomly selected individual is a child and prefers chicken?

No. of child prefers chicken = 20

The probability that a randomly selected individual is a child and prefers chicken= \frac{20}{200}=0.1

c)Given the person is a child, what is the probability that this child prefers a hamburger?

No. of children prefer hamburger = 55

No. of child = 75

The probability that this child prefers a hamburger= \frac{35}{75}=0.46

d) Assume we know that a person has ordered chicken, what is the probability that this individual is an adult?

No. of adults prefer chicken = 60

No. of total people like chicken = 80

A person has ordered chicken, the probability that this individual is an adult= \frac{60}{80}=0.75

3 0
2 years ago
What is scientific notation?
Montano1993 [528]
An expression to represent a decimal between 1 and 10 multiplied by ten. basically to write larger numbers with less digits.
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ex. 4321= 4.321 x 10^3
7 0
3 years ago
Read 2 more answers
(a.) Vivian bought one bulb for $4. How many bulbs can Vivian buy if she has $128?
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Answer:

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Step-by-step explanation:

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2 years ago
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AysviL [449]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
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1. Ada purchased a house using a fixed rate mortgage. The annual interest rate is 6.3%
vlabodo [156]

The monthly  payment on the mortgage is option C) $2537.44

<u>Step-by-step explanation</u>:

  • Principal (P): $ 295,000
  • Rate (r): 6.3%  = 0.063
  • Number of times compounded (n): 12months\times15 years = 180
  • Number of years = 15

The formula is A = P(1 + r/n)^nt

⇒ A = 295000(1+0.063/180)^(180\times15)

⇒ A = 295000(180.063/180)^2700

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⇒ 758854.5 - 295000

⇒ Interest = 463854.5

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The monthly  payment on the mortgage = 2576.9 (approximately option C)

8 0
3 years ago
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