Suppose that the water level of a river is 34 feet and that it is receding a rate of 0.5 foot per day. Write an equation for the
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-4 + x = 6 Add 4 to both sides (to cancle out the -4)
x = 10
ANSWER
45.6cm to the nearest tenth.
EXPLANATION
The diagonal of the rectangular painting is 62cm.
The height of the painting is 42 cm.
The height of the painting h , the diagonal, and the width of the painting forms a right triangle with the diagonal being the hypotenuse.
From the Pythagoras Theorem,
The width of the painting is 45.6cm to the nearest tenth.