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emmainna [20.7K]
3 years ago
5

Help Please!!!! I'm Going To Get A Test Tomorrow On This And Ion Know How To Do These

Mathematics
2 answers:
Dmitriy789 [7]3 years ago
8 0

y=3x-2  y=-2x+8

3x-2=-2x+8  (plus 2 each side)

3x=-2x+6     (plus 2x each side)

5x=6   (divide by 5 each side)

x=1.2

Plug x back into an equation

y=3(1.2)-2

y=3.6-2

y=1.6

Answer: (1.2, 1.6)

iVinArrow [24]3 years ago
8 0
The same as this person and yeah I hope you get a a ok bye
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How can you use distributive property to find 3/4 times 2 and 1/3
zubka84 [21]

Answer:

1 3/4

Step-by-step explanation:

You can set it up like the distrubtive property first

3/4(2+ 1/3)    Next you use the distirbutive property instead of adding inside the parenthesis and you multiply the 3/4 by 2 and then the 3/4 by 1/3

Use 2 as 2/1 in fraction problems

3/4 * 2/1        Now multiply the numerators together and the denomenators together

3 * 2 = 6          4 * 1 =4

6/4

3/4 *1/3

3 * 1 =3

4 * 3 =12

3/12

Now we have to make them both like terms (same denominator) so we can add them, we will multiply the 6/4 by 3 (Both top and bottom)

6 * 3 = 18               4 *3 =12

18/12

Now we add the fractions

3/12 +18/12 = 21/12

Reduce that and you get

21/12 = 1 9/12  or 1 3/4

5 0
3 years ago
Please help me <br><br>If 180°&lt;α&lt;270°, cos⁡ α=−8/17, what is sin -α?
rewona [7]

Starting from the fundamental trigonometric equation, we have

\cos^2(\alpha)+\sin^2(\alpha)=1 \iff \sin(\alpha)=\pm\sqrt{1-\cos^2(\alpha)}

Since 180, we know that the angle lies in the third quadrant, where both sine and cosine are negative. So, in this specific case, we have

\sin(\alpha)=-\sqrt{1-\cos^2(\alpha)}

Plugging the numbers, we have

\sin(\alpha)=-\sqrt{1-\dfrac{64}{289}}=-\sqrt{\dfrac{225}{289}}=-\dfrac{15}{17}

Now, just recall that

\sin(-\alpha)=-\sin(\alpha)

to deduce

\sin(-\alpha)=-\sin(\alpha)=-\left(-\dfrac{15}{17}\right)=\dfrac{15}{17}

6 0
3 years ago
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Explanation:
There are 2 25’s 25x25, so the amount of exponents is the same as the number of repeated numbers
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2 years ago
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Answer:

BC = 2.149

.

.

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3 years ago
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25 POINTS HURRY Brainliest!!!
Alborosie
I think the answer is B
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