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Zanzabum
3 years ago
14

O) Simplify the expression. 1 - 14 =

Mathematics
1 answer:
Mashutka [201]3 years ago
7 0
It’s already simplyfied
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Whats the solution for y+5x=17
Travka [436]
This is my answer/how I did it :
y+5x=17 can also be 5x+y=17
5x+y=17
   -y      -y
5x=17-y
+17       +17
5x+17=y (answer)

5 0
3 years ago
Please help with the question!
MAVERICK [17]

Answer:

68.2275604137

Step-by-step explanation:

you can round down

I hope this helps

8 0
3 years ago
Prove the following identity :<br>Sin α . Cos α .<br> Tan α =  (1 – Cos<br> α)  (1 + Cos<br> α)
Umnica [9.8K]
Let's work on the left side first. And remember that
the<u> tangent</u> is the same as <u>sin/cos</u>.

sin(a) cos(a) tan(a)

Substitute for the tangent:

[ sin(a) cos(a) ] [ sin(a)/cos(a) ]

Cancel the cos(a) from the top and bottom, and you're left with

[ sin(a) ] . . . . . [ sin(a) ] which is [ <u>sin²(a)</u> ]  That's the <u>left side</u>.

Now, work on the right side:

[ 1 - cos(a) ] [ 1 + cos(a) ]

Multiply that all out, using FOIL:

[ 1 + cos(a) - cos(a) - cos²(a) ]

= [ <u>1 - cos²(a)</u> ] That's the <u>right side</u>.

Do you remember that for any angle, sin²(b) + cos²(b) = 1  ?
Subtract cos²(b) from each side, and you have sin²(b) = 1 - cos²(b) for any angle.

So, on the <u>right side</u>, you could write [ <u>sin²(a)</u> ] .

Now look back about 9 lines, and compare that to the result we got for the <u>left side</u> .

They look quite similar. In fact, they're identical. And so the identity is proven.

Whew !





4 0
3 years ago
Read 2 more answers
What is 1/4×2/5÷1/3 as a fraction<br> please help
Vikki [24]

Answer:

3/10

Step-by-step explanation:

Please give brainliest!

hope this helps :)

the first step is to multiply 1/4 and 2/5

1/4 times 2/5 = 2/20

you figure this out by multiplying the numerators and denominators.

next, we solve 2/20 ÷ 1/3

we do this by taking the reciprocal of 1/3, which is 3/1, and then multiplying the fractions

2/20 times 3/1 = 6/20

6/20 = 3/10

4 0
2 years ago
What are the intercepts of 2x+3y-6=30
Zolol [24]
X-Intercept is found by setting y to = 0. 
<span>Y-intercept is found by setting y to =0.</span>
7 0
3 years ago
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