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bulgar [2K]
3 years ago
9

The Value of x in the system of equation at the right is -2 what is the value of a? use elimination to help you find the value.

ax + 4y = 6
2x - 4y = -16
Mathematics
1 answer:
sammy [17]3 years ago
7 0

2x-4y=-16
ax+4y=6      +
--------------------
2x+ax=-10;     for x=-2, 
2(-2)+a(-2)=-10
-2a=-10+4
a=-6/-2
a=3
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Answer:

A

Step-by-step explanation:

The side lengths must satisfy the Pythagorean Theorem to be a right triangle. The formula is a^2 + b^2 = c^2 where a is the smallest side, b is the medium side, and c is the largest side. Test each set of numbers.

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Answer:

x        y

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8 0
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Answer:

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Step-by-step explanation:

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Using the formula to calculate the standard deviation

s=\sqrt{s^2}

As

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so the standard deviation can be calculated as:

standard deviation =\sqrt{s^2}

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