Answer:
D) Multiply A by -4 and B by 5
Step-by-step explanation:
5x-2y=10
4x+3y=7
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-4(5x-2y)=-4(10)
5(4x+3y)=5(7)
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-20x+8y=-40
20x+15y=35
---------------------
23y=-5
y=-5/23
5x-2(-5/23)=10
5x+10/23=10
5x=10-10/23
5x=230/23-10/23
5x=220/23
x=(220/23)/5
x=(220/23)(1/5)
x=220/115
x=44/23
Answer:
14 1/3
Step-by-step explanation:
Answer:
The slope is 8.
Step-by-step explanation:
If you were to graph the price of meat per pound, you would need to choose the x-axis and y-axis labels.
The x-axis is the <u>independent</u> variable, meat in pounds.
The y-axis is the <u>dependent</u> variable, price in dollars.
The price depends on the number of pounds you buy.
Slope is calculated using rise over run, or:

"Rise" is the number of squares going up.
"Run" is the number of squares going to the right.
In the graph below, <u>to go from one red dot to the next, you count 1 to the right and 8 going up</u>.



Therefore, the slope is 8.
Factor the numerator and denominator...
(n^4-5n^2-6n^2+30)/(n^4-2n^2-5n^2+10)
[n^2(n^2-5)-6(n^2-5)]/[n^2(n^2-2)-5(n^2-2)]
[(n^2-5)(n^2-6)]/[(n^2-5)(n^2-2)] notice the (n^2-5)s cancel out
(n^2-6)/(n^2-2)
We could further factor this because each is a difference of squares to:
[(n+√6)(n-√6)]/[(n+√2)(n-√2)
Answer:The answer are the red card(The second), A dependent event is an event that relies on another event to happen first.
Since he keep his first took red card,his probability to get another red card became lower,therefore it effects on what card he will take next.
the third one doesn't called a dependent event because it's a Dice,so the probability still the same
The fourth one doesn't count to,since he return back the marble.