Answer:
x=30o+n90on∈Z
Step-by-step explanation:
cos2x=sin(90o−2x)=sin(2x−30o)
Which mean 90o−2x=2x−30o+n360o
or 90o−2x+2x−30o=(2n+1)180o
The later cannot be true.
so x=30o+n90on∈Z
Answer: 7.25%
Step-by-step explanation:
There are a few ways to do this, but the easiest might be to set up a proportion:
321.75/300 = x percent/100 percent
Now cross multiply;
300x = 321.75(100) = 32,175
Divide both sides by 300 to solve for x:
300x/300 = 32,175/300
x = 107.25 This means that the tip was 7.25% on top of the $300 meal.
It will travel 39.11 miles on one gallon of fuel
hope it helps :)
Answer: g= 25 oranges
Step-by-step explanation:
.38g + 15 = 24.5
.38g = 24.5 - 15
.38g = 9.5
g = 9.5 ÷ .38
g = 25
Answer:
2*(5x - 2) + 2*(3x+1) ; Perimeter = 62 centimeters
Step-by-step explanation:
2*(5x - 2) + 2*(3x+1) = 10x - 4 + 6x + 2
= 16x -2
If x = 4 , then Perimeter = 16*4 - 2 = 64 - 2 = 62 cm
