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Zinaida [17]
3 years ago
7

Solve this please 3 1/4 - 2 1/2

Mathematics
2 answers:
Lera25 [3.4K]3 years ago
7 0
<span>3 1/4 - 2 1/2
Convert the mixed numbers into improper fractions
13/4 - 5/2
Multiply until both fractions have the same common denominator
13/4 - 10/4
Subtract the numerators but NOT the denominators
Final Answer: 3/4</span>
Naddika [18.5K]3 years ago
5 0
3 1/4 - 2 1/2 = 3/4

3.25 - 2.50 = 0.75
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You can see that you're constantly subtracting 8 to get the next number. So, we have

a_1 = 15

a_2 = a_1-8

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a_4=a_1-3\cdot 8

a_5=a_1-4\cdot 8

So, as you can see, to get the n-th term we must subtract (n-1) times 8 from the original number.

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Step-by-step explanation:

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ankoles [38]

Answer:

Kevin's constant of proportionality,k = $8.25 per hour

Greg's constant of proportionality,k = $9 per hour

Savannah's constant of proportionality,k = $9.5 per hour

Step-by-step explanation:

1. What is the constant of proportionality, k, of Kevin's wage? Greg's? Savannah's?

Solution

y = kx is a proportional variation

Where,

y and x are represent two different variables

k represent constant of proportionality

From the attached table,

Let

y = wages earned (in dollars)

x = hours worked

To find the constant of proportionality k of Kevin's wage, divide the variable y (total earned) by the variable x (number of hours)

Using any points on the table

Take (8,66.00) for example

constant of proportionality k of Kevin's wage = variable y (total earned) / variable x (number of hours)

= 66.00/8

= 8.25

k = $8.25 per hour

B. Constant of proportionality of Greg's wage = variable y (total earned) / variable x (number of hours)

Using (9, 81.00)

k = 81.00/9

= 9

Greg's k = $9 per hour

C. Constant if proportionality of Savannah's wage = variable y (total earned) / variable x (number of hours)

Using (6, 57.00)

k = 57.00/6

= 9.5

Savannah's k = $9.5 per hour

Therefore,

Kevin's constant of proportionality,k = $8.25 per hour

Greg's constant of proportionality,k = $9 per hour

Savannah's constant of proportionality,k = $9.5 per hour

7 0
3 years ago
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