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NeTakaya
3 years ago
6

Give an indirect proof of the following statement

Mathematics
1 answer:
arlik [135]3 years ago
3 0
Complicated answer.............
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Find the product of (3x + 7y)(3x − 7y)
nalin [4]

Answer:

9x^2 - 49y^2

Step-by-step explanation:

7 0
2 years ago
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please help! find the scale factor and ratio of perimeters for a pair of similar octagons with areas 64ftsq and 81ftsq. i need t
kati45 [8]

Answer:

the scale factor and the ratio of their perimeters is 8/9

Step-by-step explanation:

k^2=area 1/area 2

k^2=64/81

=square root if k^2=square root of 64/81

=<u>k</u><u>=</u><u>8</u><u>/</u><u>9</u>

4 0
2 years ago
Where does the graph of y=2x2-x-3 cross as the x-axis?
tiny-mole [99]
This can be determined by finding the x-intercept. In doing so, we let y=0 to find the value of x.

y= 2x^2 -x -3
[0 = 2x^2 -x-3]÷2
0 = x^2 -1/2 x - 3/2

Complete the squares:

1/16 + 3/2 = x^2 - 1/2x + 1/16
25/16 = (x -1/4)^2
sqrt (25/16) = x - 1/4
+/- 5/4 = x - 1/4

Thus,
x = 1/4 + 5/4 = 3/2
x = 1/4 - 5/4 = -1

Thus, the graph crosses at x = 3/2 and x = -1.
6 0
3 years ago
2+2= ???????<br><br> Will give brainlyest answer!!!!!!
Alex17521 [72]

Answer: fish

Step-by-step explanation: 2+2=fish

6 0
2 years ago
Sunil wants to find a side length of a cube with a volume of 27 cubic units. To find the length of one side, Sunil sets up the f
e-lub [12.9K]

Answer:

Step-by-step explanation:

Use math-way go quick and easy answers without step by step explanations, and use math-soup-calculator for step by step explanation

6 0
3 years ago
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