<span>y=3x
2. x=-y
2x+y=-2
3. 2x+2y=4
x=10-3y
4. y=7-x
2x+3y=-1</span>
Answer:

Step-by-step explanation:

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<u>Simplifying the expression using "a ÷ b = a x 1/b"</u>


Answer:
x=21.7
Step-by-step explanation:
cos ø=adjacent/hypotenuse
cos37°=17.3/hypotenuse
hypotenuse=17.3/cos 37°
hypotenuse=21.66