2x + 5y = 20
5y = -2x + 20
y = -2/5x + 4. The slope here is -2/5. A perpendicular line will have a negative reciprocal slope. To find the negative reciprocal of -2/5, we flip the slope and change the sign. So our perpendicular line will have a slope of 5/2.
y = mx + b
slope(m) = 5/2
(10,-4)....x = 10 and y = -4
now we sub and find b, the y int
-4 = 5/2(10) + b
-4 = 25 + b
-4 - 25 = b
-29 = b
so our perpendicular equation is : y = 5/2x - 29 <==
Step-by-step explanation:
5 is not the factor of 24
4. Options 3
5 option 1
6 option 4
7 option 2
Answer:
Question 1:
Equation 1: q+d=100
Equation 2: 25q + 10d = 19
Question 2:
Equation 1: a + 2c = 35
Equation 2: 2a + 3c = 60
Answer:
21,810,000,000
Step-by-step explanation:
Given the following question:
![2181\times10^7](https://tex.z-dn.net/?f=2181%5Ctimes10%5E7)
To find the answer we have to remember that all numbers have an invisible decimal point on the right side of the number. To convert a scientific notation into standard form we look to see if the exponent is positive or negative. If positive we move the decimal point to the left, if negative move the exponent to the right.
![2181\times10^7](https://tex.z-dn.net/?f=2181%5Ctimes10%5E7)
![2181=2181.](https://tex.z-dn.net/?f=2181%3D2181.)
![+7](https://tex.z-dn.net/?f=%2B7)
![2181.=2181.0.0.0.0.0.0.0.=21810000000](https://tex.z-dn.net/?f=2181.%3D2181.0.0.0.0.0.0.0.%3D21810000000)
![=21810000000](https://tex.z-dn.net/?f=%3D21810000000)
Which means your answer is "21,810,000,000!"
Hope this helps.