Y = -2x + b
Plug in point
1 = -2(-9) + b
1 = 18 + b, b = -17
Solution: y = -2x - 17
When is a=21000?
solve
21000=3400t+600
solve for t
minus 600 both sides
20400=3400t
divide both sides by 3400
6=t
t is in minutes
6 minutes
Answer:
x = -2
y = 5
Step-by-step explanation:
2x - 3y = -19 ---------------------------(I)
7x+ 7y = 21 -----------------------------(II)
Multiply equation (I) by 7 and equation (II) by 3.Then add and so y will be eliminated and you will get the value of x
(I)*7 14x - 21y = - 133
(II)* 3 <u> 21x + 21y = 63 </u> {Now add}
35x = -70
x = -70/35
x = - 2
Plug in x = - 2 in equation (I)
2*(-2) - 3y = -19
-4 - 3y = -19
-3y = -19 + 4
-3y = -15
y = -15/-3
y = 5
-22 is the answer because since 2 is negative and 11 is positive the answer is going to be negative. Hope it helps
A regular polygon has about 5 lines of symmetry. The number of lines of symmetry is equivalent to the number of sides.
