With a square or rectangular shape, the formula for figuring out how big an area is is simple: multiply the length and width of the shape by the square feet is the surface area of a pool that is feet long and feet wide (8x 10).

8 0

2 years ago

A jar contains n nickels and d dimes. There is a total of 216 coins in the jar. The value of the coins is $14.95. How many nicke

dybincka [34]

N + D = 216

.05(N) + .10(D) = $15.95

7 0

3 years ago

Which of the following is the equation of a line perpendicular to

slega [8]

Answer: $y = -2x - 3$

Step-by-step explanation:

Two lines are said to be perpendicular if the product of their slope = -1

Given :

$4y = 2x + 5$

to find the slope , we will write it in the form : $y = mx + x$

That is

$y = \frac{2}{4}x + \frac{5}{4}$

$y = \frac{1}{2}x + \frac{5}{4}$

which means that the slope = $\frac{1}{2}$

any line that is perpendicular to this line will have slope = -2

using the formula :

$y - y_{1} = m (x-x_{1})$ , we have

$y - (-1) = -2 ( x -(-1) )$

$y + 1 = - 2 ( x + 1 )$

$y + 1 = -2x - 2$

$y = -2x - 2 - 1$

$y = -2x - 3$

8 0

3 years ago