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2 years ago

Increase 80 by 12.5%

Mathematics

2 answers:

Andrei [34K]2 years ago

8 0

Answer:

$80 \times \frac{12.5}{100} \\ = 10$

then 80+10 =90

Luden [163]2 years ago

6 0

Answer:

Step-by-step explanation:

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15 dollars an hour for 1 week, how much will you make?

Aleksandr-060686 [28]

$15 an hour for a 40 hour work week is $600.

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3 years ago

Read 2 more answers

If I was doing -3n - 24

Fynjy0 [20]

It will be. -3(n+8) because you have to go from greatest to least and then 2 negatives will equal a positive

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3 years ago

Simplify the expressions.1 a. –2 t + 5 t – 2 – t

masha68 [24]

Answer:

1 a.) 2t – 2

1 b.) –9z + 4

2 a.) –2v + 3

2 b.) –13k – 9

3 a.) 7w − 2

3 b.) 10s

4 a.) 5

4 b.) –3p + 11

5 a.) –29x + 9

b.) 15v – 60x – 2

a.) 25n + 2

b.) –15n

a.) –71x + 4

b.) –15b

Step-by-step explanation:

<em>NOTE: I am kind of confused about the way this question is formatted, so I tried to answer everything I could decipher.</em>

1 a.) –2t + 5t – 2 – t → 2t – 2

1 b.) –5z + 4 – 4z → –9z + 4

2 a.) 8v + 3 – 10v → –2v + 3

2 b.) –6 – 6k – 3 – 7k → –13k – 9

3 a.) –6 – 3w + 4 + 10w → 7w − 2

3 b.) 9s + s → 10s

4 a.) 6 + 8b – 1 – 8b → 5

4 b.) 1p + 6 + 5 – 4p → –3p + 11

5 a.) 4x – 3x + 9 – 6x 5 → –29x + 9

b.) 9v + 6v – 2 – 10x 6 → 15v – 60x – 2

a.) n + 2 – (–4)n 6 → 25n + 2

b.) 6n – 3n 7 → –15n

a.) –4x – 4x + 4 – 9x 7 → –71x + 4

b.) –9b + (–6)b → –15b

7 0

3 years ago

A bag contains 50 lottery balls, numbered 1-50. A ball is chosen at random, then a month of the year is selected. What is the pr

Morgarella [4.7K]

Answer:

4/75

Step-by-step explanation:

We have two sample spaces

1.Lottery balls

2. Month of the year

For lottery balls the sample space is S= 50

Multiples of 3 between 1 and 50 are

(3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48)= 16 in numbers

Hence the probability of choosing a multiple of 3

Pr(multiple of 3) = 16/50= 8/25

Also the sample space for months of the year is S= 12

Two months starts with letter m, March and may

Pr(of months with m) = 2/12= 1/6

the probability of choosing a multiple of 3 and a month starting with the letter M= 8/25*1/6= 8/150= 4/75

6 0

3 years ago

The scheduled arrival time for a daily flight from Boston to New York is 9:30 am. Historical data show that the arrival time fol

Galina-37 [17]

Answer:

Step-by-step explanation:

Let x be a random variable representing the flight arrival time from Boston to New York.

For a uniform probability distribution, the notation is

X U(a, b) where a is the lowest value of x and b is the lowest value of x

The probability density function, f(x) = 1/(b - a)

Mean, µ = (a + b)/2

Standard deviation, σ = √(b - a)²/12

From the information given, the time difference in minutes is 9:57 - 9:07 = 50 minutes. Therefore,

a = 0

b = 50

µ = (0 + 50)/2 = 25

σ = √(50 - 0)²/12 = 14.43

b) converting to minutes, it is 9:30 - 9:07 = 23 minutes

the probability that a flight arrives late(later than 9:30 am) is expressed as P(x > 23)

f(x) = 1/(50) = 0.02

P(x > 23) = (50 - 23)0.02 = 0.54

7 0

3 years ago