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4 years ago

Introduction to Interval Notation What is the domain and range?

Mathematics

1 answer:

Snezhnost [94]4 years ago

3 0

The domain of this function is 3≤x≤5 in interval notation that is [3,5]

The range is -3≤y≤3. In interval notation that is [-3,3]

The domain of this function is -5≤x≤-1 in interval notation that is [-5,-1]

The range is 1≤y≤5. In interval notation that is [1,5]

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Answer:

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3 years ago

A rectangle has a length that is 9 feet less than four times its width. Its area is 90 square feet

kramer

Answer:

The length of rectangle is $15\ ft$

The width of rectangle is $6\ ft$

Step-by-step explanation:

Let

x-----> the length of rectangle

y----> the width of rectangle

we know that

The area of rectangle is equal to

$A=xy$

$A=90\ ft^{2}$

$90=xy$ -----> equation A

$x=4y-9$ -----> equation B

substitute equation B in equation A and solve for y

$90=(4y-9)y$

$4y^{2}-9y-90=0$

using a graphing calculator

The solution is

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4 years ago

Ruth Barr rented a car for 5 days at 59.95 per day with unlimited mileage she drove 1156 miles and paid 137.76 for gasoline. Wha

Paha777 [63]

Answer:

£13860.44

Step-by-step explanation:

59.95 / 5 = 11.99

£11.99 for 1 day

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