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jolli1 [7]
3 years ago
8

If a+b = 7, and a² +b²=25then ab = ?​

Mathematics
1 answer:
Rama09 [41]3 years ago
3 0

a2+b2=25

or, (a+b)^2-2ab=25

or, (7)^2-2ab=25 [a+b=7]

or, 49-25=2ab

or, 24/2=an

•°• ab=12....

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kodGreya [7K]

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Step-by-step explanation:

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3 years ago
HELP WITH THIS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
wlad13 [49]

Answer:

B., E.

Step-by-step explanation:

what was the difficulty ? this is just to understand the movement of a thrown rock.

what happens, when you throw a rock through the air ? it will first move up a little bit, reaches a maximum height, and then drops down again.

that is what the graphic shows.

so, can A. be correct ? no. as we move from 0 seconds to the right (time passes) the height of the rock increases first (before decreasing again later on).

can C. be correct ? no, it would mean that the function would look the same on both sides of the x-axis. this is clearly impossible.

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4 0
3 years ago
BRAINLIEST <br>if -x = x -6 then x = <br>A. -6<br>B. -3<br>C. 0<br>D. 3<br>explain please​
Paul [167]

Answer:

D or 3

Step-by-step explanation:

The equation you are saying is

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If you move both x's to one side, you get

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From this, you can simplify by dividing by -2

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Hope this helped!

5 0
3 years ago
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