4 years ago

Solve the system by either elimination or substitution

1 answer:

5 0

The correct answer is A: x=2 and y=-3. Either method would work, but for example, let's use elimination. If you multiply the second equation by 5, you get: 10x +5y = 5. When you add both equations, you can then cross out both y terms. You are left with one equation that reads: 13x=26. Solving for x gives you 2. You can substitute 2 in for x in either equation and you will receive -3 for your y value.

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The attendance at a seminar in year 1 was 500. In year 2, the attendance changed by 100. What was the percent change in attendan

Citrus2011 [14]

Answer:

20%

Step-by-step explanation:

to figure this out yourself you could simply do 100/500 = 0.2 which translates to 20%

3 0

3 years ago

Can someone help me on this

Nikitich [7]

Hi there! The third answer is correct.
x = 110
y = 12

x = 110 because angle D equals angle B.
y = 12 because the length of AB equals the length of CD.

5 0

3 years ago

Read 2 more answers

P=1/2 q=-1/4 r=1/6 evaluate this: 48pqr(p+q+r)/(p+q)(p+r)

timama [110]

Answer:

-2

Step-by-step explanation:

48pqr x (p + q + r) / (p + q) x (p + r)

48(1/2)(-1/4)(1/6) x (1/2 + (-1/4) + 1/6) / (1/2 + (-1/4)) x (1/2 + 1/6) dear lord..

48(1/2)(-1/4)(1/6) x (0.4) / (0.25) x (0.7)

-1 x (0.4) / (0.25) x (0.7)