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adelina 88 [10]
3 years ago
14

Help please!! will give brainiest :))

Mathematics
2 answers:
jeyben [28]3 years ago
7 0

Answer:

81(x + 2y)(x - 2y)

Step-by-step explanation:

81 {x}^{2}  - 324 {y}^{2}  \\  \\  =  {(9x)}^{2}  -  {(18y)}^{2}  \\  \\  = (9x + 18y)(9x - 18y) \\  \\  = 9(x + 2y) \times 9(x - 2y) \\  \\  = 81(x + 2y)(x - 2y)

Kitty [74]3 years ago
3 0
<h2><u><em /></u></h2><h2><u><em> -98415 is the answer because im smart</em></u></h2>
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Please answer both questions i will fail if i don't get these
MrRa [10]

Answer:

its  below

Step-by-step explanation:

a) (0,1)   (-1,2)  (1,2)  (2,5)   (-2,5)

b) (0, -1, 1, 2, -2)

c) (1,2,5,5)

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4 0
3 years ago
-3/7 + 9/10 (estimate the value of the expression)
Delicious77 [7]

Answer:3/35

Step-by-step explanation:

7 0
3 years ago
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A county has a goal to build 12,000 bus stop shelters in 48 months . If the county builds 215 bus shelters each month , will it
Leokris [45]

Answer:

No, it will not reach its goal.

Step-by-step explanation:

The main reason why it will not meet its goal is because if you do the math, 215 x 48 does not equal 12000, it equals 10320 which is just 1680 shelters low. Therefore, they will not meet their goal.

8 0
3 years ago
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Pls help I’ll give brainliest
alexandr402 [8]
What grade is this? are these meant to be fractions?
7 0
3 years ago
Dr bell donated 2(3x+60) dollars to the salvation army, 5x dollars to the church and $100 to a sport shop. If he donated a total
Andreyy89
He donated $285 to the salvation army.
The first thing to do is solve for "x". The equation would be {2(3x+60)}+5x+100=550. 
Then, you would multiply 2 with 3x and 60. Your new equation would be 5x+120+5x+100=550. 
Next, you would combine like terms. This means to combine the terms that are similar. In this case, it would be the whole numbers and the numbers with the variable. Your new equation would be 10x+220=550. 
After that, you subtract 220 on both sides of the equal sign. This makes the equation 10x=330. 
Then, you divide ten on both sides of the equal sign, giving you x=33.
The second things to is replace the x with 33. The amount for the salvation army is 5x+120. Replacing 33 with x, your final equation will be 165+120=$285.

Have a great day!!! :)
5 0
3 years ago
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