In 20 years, Kayleen will be four times older than she is today. What is her current age?
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Determine the equation of a line in point-slope form that passes through (3, -4) and is perpendicular
to the line -2x + 3y = -15.
The lengths of three rods are 6 cm, 9 cm, and 11 cm. How can you use those rods to measure a length of 14 cm?
A triangle has an area of 150 m² and a perpendicular height of 15 m. Find the length of its base.
6x⁴ - 3x - 2x⁴ + 2x
= 4x⁴ - x Why does it not equal 4x⁴ - 5x ? Trying to help my son who thinks the - before the 3x is a minus sign not a negative sign. So why do I simplify this part as -3x + 2x = -x, he thinks it should be 3x + 2x = 5x, which is subtracted from the 4x⁴.
Sophie is 6 years older than Betty. In 3 years' time Sophie will be twice as old as Betty. How old is Sophie now?
A tv has a listed price "$627.98" before tax. If the sales tax rate is 6.75% , find the total cost of the TV with sales tax included.
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