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olganol [36]
3 years ago
14

Expand & simplify(9x - y) (9x + y)​

Mathematics
1 answer:
grandymaker [24]3 years ago
5 0

Answer:

81x^{2}- y^{2} this is the answer

Step-by-step explanation:

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to print tickets, a printer charges $45 setup fee plus $2.00 per ticket. Write an algebraic expression for the cost of t tickets
Cerrena [4.2K]

Answer:

equation is 45+2.00t. the price of 350 tickets would be 700... but the total cost is 745

3 0
3 years ago
Find the Unit Rate in decimal representation. Round to the nearest hundredth, if
Mekhanik [1.2K]

Answer:

$4.1

Step-by-step explanation:

To find the Unit Rate, you have to find how much it cost of 1 lb. So, you have to divide 16 and 3.99

16/3.99

= 4.01002506

≈ $4.1

6 0
3 years ago
74ft <br> 24ft <br> b<br> What is the length of the missing leg?
amm1812

Answer: 70

Step-by-step explanation:

a^2 + b^2 = c^2

24^2 + b^2 = 74^2

576 + b^2 = 5,476

-576             -576

b^2             =4,900

(square root)

b                 =70

4 0
3 years ago
Sue bought 54 ft of lumber for building a window frame each window frame requires 13 1/2 feet of lumber how many window frames h
Arturiano [62]

Answer:

The correct answer is 4 window frames.

Step-by-step explanation:

Sue bought 54 feet of lumber for building window frame.

Each window frame requires 13 1/2 feet = \frac{27}{2} feet of lumber.

Therefore the number of window frames Sue can make with 54 feet of lumbers she bought is given by dividing the total amount of lumber she has by the lumber it takes to make a single window frame.

= \frac{54}{27} × 2 = 2 × 2 = 4

Thus Sue can make 4 window pane from 54 feet of lumber, each of 13 and a half feet.

6 0
3 years ago
Whole number 6 is equal to ?/3
Ugo [173]

Step-by-step explanation:

That means 6/3 is equivalent to 2 wholes! When the numerator is divisible by the denominator, the fraction is equivalent a whole number. If the numerator is equal to the denominator, you will always have one whole, or 1.

5 0
3 years ago
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