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san4es73 [151]
3 years ago
7

Factorise the following expressions 5x^2-25xy​

Mathematics
1 answer:
Natali [406]3 years ago
3 0

Answer: 5x ( x - 5y )

Step-by-step explanation:

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Help is needed please help
Anna007 [38]

You have to do Pythagorean theorem:

a^{2} +b^{2}  = c^{2}

"a" and "b" are the legs. In this case 7 is a leg and x is a leg

"c" is the hypotenuses, which is 19 here

so...

a = 7

b = x

c = 19

Plug the numbers above into the equation:

7^{2} + x^{2} = 19^{2}

49 +x^{2} = 361

Isolate x by subtracting 49 to both sides:

(49-49) + x^{2} = 361 - 49

x^{2} = 312

To solve for x you have to take the square root to both sides of the equation:

\sqrt{x^{2} } = \sqrt{312}

x = 17.6635

x = 17.7

Hope this helped!

6 0
3 years ago
1. A box of fruit has 12 plums and 15 bananas. The
sukhopar [10]

Answer:

12p x (15 x 25) I might not be correct :')

3 0
3 years ago
Read 2 more answers
Write the standard form of the line passing through the following points (-5,1) and (0,-5)
Ronch [10]

Answer:

-6/5

Step-by-step explanation:

-5-1 / 0-(-5)

3 0
3 years ago
Please help, if you do not know do not answer please!
Paul [167]

Answer:

1,3 are functions

2,4 are not

6 0
3 years ago
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The diagonal AC is drawn in parallelogram ABCD Which method can NOT be used to prove that AABC is congruent to ACDA?
diamong [38]

Answer:

B SSA

Step-by-step explanation:

Geometric proofs can be used to show that the two triangles are congruent using ASA, SAS and SSS.

However, there is no such thing as SSA in geometry because an angle and two sides can not show congruence of triangles. This is so because the angle is not an included angle.

5 0
3 years ago
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