3 years ago

I WILL MARK BRAINLIEST

Mathematics

2 answers:

sashaice [31]3 years ago

7 0

Answer:

I'm pretty sure the answer is D.

Step-by-step explanation:

idontknow

Viefleur [7K]3 years ago

3 0

Answer:

I think it’s B

Step-by-step explanation:

I did the math and I’m pretty sure that it’s B

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X2-3xy-5xy-7y2+4x2+8y2

Zepler [3.9K]

For this case we must simplify the following expression:

$x ^ 2-3xy-5xy-7y ^ 2 + 4x ^ 2 + 8y ^ 2$

We must add similar terms taking into account that:

Equal signs are added and the same sign is placed.

Different signs are subtracted and the major sign is placed.

$(x ^ 2 + 4x ^ 2) + (- 3xy-5xy) + (- 7y ^ 2 + 8y ^ 2) =\\5x ^ 2-8xy + y ^ 2$

Thus, the simplified expression is:

$5x ^ 2-8xy + y ^ 2$

Answer:

$5x ^ 2-8xy + y ^ 2$

4 0

4 years ago

Can someone please help me

Talja [164]

a^2 + b^2 = c^2

65^2 + 34^2 = c^2

4225 + 1156 = c^2

5381 = c^2

c ≈ 73.3552997404

Hope this helps! ;)

5 0

4 years ago

Which expression is equivalent? Please see pictures attached!

VMariaS [17]

hey, u didn’t rlly attach anything :/

5 0

3 years ago

Wellpp, I am kinda lost! The answer I got was 27.

LekaFEV [45]

Answer:

26.7 (1 d.p.)

Step-by-step explanation:

Please see attached picture for full solution.

8 0

3 years ago

PLSS HELPP MEE

Anestetic [448]

208.53 is the anwser

3 0

3 years ago