<h3>
Answer: $59.25</h3>
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Explanation:
There are two approaches
Method 1
25% of 79 = 0.25*79 = 19.75
Mary saves $19.75 and the price before tax is 79 - 19.75 = 59.25
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Method 2
She saves 25% so she must pay the remaining 75%
75% of 79 = 0.75*79 = 59.25
This is a slight shortcut, and it's very useful when it comes to chaining multiple discounts together.
the answer is D glad I could help
Answer: 21
Step-by-step explanation: This is a combination of 7 objects taken 5 at a time
nCr = n! / r! * (n - r)!
7C5 = 7! / (5! (7-5)!)
= 7! /(5! 2!)
= (7*6*5*4*3*2*1)
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5*4*3*2*1 * 2*1
Canceling
= 7*6/ (2*1)
= 21
Two things must be performed to make an equation that satisfies this. First, we need to come up with a general equation that is perpendicular to the one in the problem. To do this, the reciprocal of the slope is calculated (negative inverse). The line that is perpendicular to y=1/8x + 2 has a slope of -8. This is what our equation looks like so far:
y’=-8x
This is good, but it doesn’t pass through (1,5). To make it do this, put the point in the equation and solve it - a point on a graph that intersects the line is a “solution” of the equation, so we need to solve for it!
y’ = -8x
(5) = -8(1)
Nope, 5 doesn’t equal -8. Let’s make the two sides equal by adding 13 to the right side.
y’ = -8x + 13
(5) = -8(1) + 13
5=5 - yes!
Our equation that is perpendicular to the one in the question and also passes through the point (1, 5) is y’=-8x + 13.
Hope this helps!
