19. The base of a triangle is four less than three times the height. The area of the triangle is 38 square centimeters. A=(b×h)/2
(3 points)
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An expression for the base of the triangle: Response area
Equation for the area of the triangle, substituting in for the base: Response area
The first step in solving for h: Response area
Question 2
20. Solve the equation for y: 3x+5y=60
(1 point)
Responses
y=−35x+12
y is equal to negative 3 fifths x plus 12
y=60−3x
y is equal to 60 minus 3 x
y=57x5
y is equal to 57 x over 5
y=60+3x5
y is equal to 60 plus 3 x over 5
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1 answer
An expression for the base of the triangle: \[ b = 3h - 4 \]
Equation for the area of the triangle, substituting in for the base: \[ 38 = \frac{(3h - 4)h}{2} \]
The first step in solving for h:
Multiply both sides by 2 to eliminate the fraction:
76 = (3h - 4)h
Solve the equation for y:
The correct response is: