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e-lub [12.9K]
3 years ago
13

Find each percent decrease. Round to the nearest percent. From 20 miles to 11 miles

Mathematics
2 answers:
Ahat [919]3 years ago
7 0
The answer is 45%. The miles went down 9 miles, so you do 9/20, or 45%
hjlf3 years ago
4 0
First we should find the percent that this number of miles are currently at:
20n = 11
n = 11/20
n = 0.55
1 - 0.55 = 0.45
A 45% decrease
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3 years ago
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12y(5y-7)(4y+9)=0<br> please show step by step to solve
Tcecarenko [31]

Answer:

y=0,y=7/5,y=-9/4

Step-by-step explanation:

12y(5y-7)(4y+9)=0

Using the zero product property

12y =0   (5y-7) =0  (4y+9)=0

12y/12 =0/12      5y-7 +7 =0+7     4y+9-9=0-9

y =0                        5y = 7               4y = -9

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3 0
3 years ago
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What is an equation of the line that passes through the point (-5, -6) and is
Vikentia [17]

Answer: y= 2x +4

Step-by-step explanation:

1. To be able to write the equation of the line, you want to be able to find the slope first. To do so, rearrange the given equation x+2y=2 into slope-intercept form, which is y=mx+b

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2. Now that you have the equation, look for the slope in the new equation; this will be the m value. In this case, the slope is -1/2. Since we are looking for a line that is perpendicular, we have to change the slope so that it is the opposite reciprocal. The opposite reciprocal of -1/2 is 2, so the slope of the equation we want to find is 2.

3. Next, all we have to do is plug the given ordered pair (-5, -6) and the slope that we found (m=2) into the point-slope equation, which is y-y_{1} = m(x-x_{1} )

That will give us:

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4. Now, solve this equation.

y+6 = 2(x+5)  --> distribute the 2 inside the parentheses

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4 0
3 years ago
Which kind of triangle is shown
KiRa [710]

Answer:

scalene triangle

Step-by-step explanation:

7 0
3 years ago
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Answer:

9 * 10^4 is 300 times larger than 3 * 10^2

Step-by-step explanation:

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as we can see, by squaring the second figure, we get the first

Mathematically, what we are saying is that;

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Hence we can conclude that the first number is 300 times bigger than the second number

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