Answer:
Equation: y = -2x + 2
Step-by-step explanation:
given coordinates: (-1, 4) , (2, -2)
Find the slope: (y2-y1)/(x2-x1)
: (-2-4)/(2--1)
: -6/3
: -2 ...........this is the slope,(m) of the line
Find equation using: y - y1 = m ( x - x1 )
: y - 4 = -2 ( x - -1)
: y - 4 = -2x -2
: y = -2x + 2
Answer:
61 coins that are not nickels
n = 82 - 61
Step-by-step explanation:
22 pennies + 23 dimes + 16 quarters = 61 coins that are not nickels
n = no. of nickels
n = 82 - 61
Answer:
3n^2+9+5n^4+55n
Step-by-step explanation:
Steps
$\left(3n^2+9+5n^4-3n\right)+\left(-9n\left(-7\right)-5n\right)$
$\mathrm{Remove\:parentheses}:\quad\left(a\right)=a,\:-\left(-a\right)=a$
$=3n^2+9+5n^4-3n+9n\cdot\:7-5n$
$\mathrm{Add\:similar\:elements:}\:-3n-5n=-8n$
$=3n^2+9+5n^4-8n+9\cdot\:7n$
$\mathrm{Multiply\:the\:numbers:}\:9\cdot\:7=63$
$=3n^2+9+5n^4-8n+63n$
$\mathrm{Add\:similar\:elements:}\:-8n+63n=55n$
$=3n^2+9+5n^4+55n$
Answer:
Step-by-step explanation:
Cos(Sec - 1 ) = 1 - cosC
Cos and Sec are reciprocals which when multiplied together is 1
-1 * Cos = -Cos
SO: 1 - Cos = 1 - Cos
Hope this helps!