3x = -5y -------------- (1)
6x - 7y = 17 --------- (2)

From (1):
3x = -5y
x = -5/3 y ---------- sub into (2)

6 (-5/3 y) - 7y = 17
-10y - 7y = 17
-17y = 17
y = -1 ------------ Sub into (1)
3x = -5 (-1)
3x = 5
x = 5/3

Ans: x = 5/3, y = -1

7 0

3 years ago

Simplify (8m2+m+7m2)-(3m-4m3+2m2)

kondaur [170]

$(8m^2+m+7m^2)-(3m-4m^3+2m^2)\\\\=8m^2+m+7m^2-3m+4m^3-2m^2\qquad|\text{combine like terms}\\\\=(4m^3)+(8m^2+7m^2-2m^2)+(m-3m)\\\\=4m^3+13m^2-2m$

4 0

3 years ago

Which of the following sequences is an arithmetic sequence?

Elza [17]

Answer:

The answer is C

Step-by-step explanation:

The only equation that you are adding n of each time. In this scenario n=3

4 0

3 years ago

May I ples have a little help pless <br> Simplify using the laws of exponents<br> [2^4/2^ 3]^5

xxMikexx [17]

$\left[\dfrac{2^4}{2^3} \right]^5 \\\\\\=[2^{4-3}]^5\\\\=[2^1]^5\\\\=2^5\\\\=32$

5 0

2 years ago