3 years ago

Somebody link me a video on how to do proofs

Mathematics

1 answer:

Artyom0805 [142]3 years ago

7 0

Https://youtu.be/fSu1LKnhM5Q

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Please help! 12 points

Ivahew [28]

Answer:

Step-by-step explanation:

sin2x = 2sinx*cosx

= $2\sqrt{sin^{2}x }$ * cosx

= $2\sqrt{(1-cos^{2}x }$ * cosx

= 2 $\sqrt{1-\frac{3}{5} ^{2} } *\frac{3}{5}$

= $\frac{8}{5} * \frac{3}{5}$

= 24/25

8 0

3 years ago

(9.4x-3y) -(4.5x-8y) simplified

Elena-2011 [213]

Answer:

4.9x + 5y

Step-by-step explanation:

$(9.4x - 3y) - (4.5x - 8y) \\ = 9.4x - 3y - 4.5x + 8y \\ = 9.4x - 4.5x + 8y - 3y \\ = 4.9x + 5y$

6 0

4 years ago

What is -2x-3=y in standard form

just olya [345]

<span>-2x-3=y in standard form
=
2x + y = -3

hope it helps</span>

6 0

3 years ago

Least common multiple. of 5 ,10 and 16

Andreyy89

Answer:

Step-by-step explanation:

There is no lcm other than 1 between these 3 numbers

5 factors: 1, 5

10 factors: 10,1,5,2

16 factors:16,1,4,4,8,2

All of these have the number one in common, hence the answer

4 0

3 years ago

Read 2 more answers

Hurry I’m being timed!!!

Alexxx [7]

Answer:

-2,3 cus its in the second plane (top left)

Step-by-step explanation:

give this brainliest if correct and u aced ur test :)

3 0

2 years ago