Evaluate formulas

To evaluate a formula, we replace its letters, called variables, with specific numbers and evaluate the right side using the order of operations rule.

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QUESTION OF
Views #: 514
Questions #: 2
Time: 5 minutes
Pass Score: 80.0%
Style
Mode

Trapezoid

1 pts

The formula for the area of a trapezoid is \(A = \frac12 h(a + b)\), where A is the area, h is the height, and a and b are the lengths of its bases.  Find A when \(h = 1\frac23\)in., \(a =2\frac12\) in., and \(b = 5\frac12\) in.

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Correct Answer

Explanation

Triangle

1 pts

The formula for the area of a triangle is \(A = \frac12 bh\).  Find the area of a triangle whose base is \(12\frac12\) meters long and whose height is \(15\frac13\) meters.

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Correct Answer

Explanation

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0
sin cos tan
sin-1 cos-1 tan-1 π e
xy x3 x2 ex 10x
y√x 3√x √x ln log
( ) 1/x % n!
7 8 9 + MS
4 5 6 – M+
1 2 3 × M-
0 . EXP ÷ MR
± RND C = MC
Keywords
Year 7