63
Step-by-step explanation:
2x+54=180
2x=180-54
2x=126
divide each side by two u will get x
The formula of an area of a rhombus:
The diagonals bisect each other. That is, they divide each other into two equal parts.
Therefore we have:
Substitute:
Answer: 2.16 m²
Answer:
6x-7y=17-----y=6/7x-17/7
6x-11y=-13----y=6/11x-13/11
6x-11y=13----y=6/11x+13/11
11x-6y=13-----y=11/6x-13/6
Step-by-step explanation:
First of all, the first power of 'x' is the highest power in the whole equation,
so we only expect one solution.
You said that <span><u>3x+9 = 21+7x </u>
Subtract 3x from each side:
9 = 21 + 4x
Subtract 21 from each side:
-12 = 4x
Divide each side by 4 :
<u>-3 = x </u>
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