Answer:
1.25*x=5/7 and it will take 1.607 gallons maybe
Step-by-step explanation:
we know he used 1.25 gallons to cover only 5/7 of the fence. we don't know the area of the fence. we use a variable for area. 1.25 gallons of paint times the area of the fenxe equaled 5/7 of the fence getting painted. you'd need more paint for the entire fence. solve for x says that x=0.57 was the area. so now we say that 0.57 only equated to 5/7 but we want 7/7 painted so so we need 2/7 more paint so we multiply 1.25 by 2/7 to find how much per for that area and we get 0.357. add 0.357 to 1.25 to get 1.607
D = 109 - 84 = 134 - 109 = 25
2nd term = 34 + 25 = 59
Answer:
42
Step-by-step explanation:
49-7=42
If you have an angle and want to know its complement, you subtract it from 90 degrees. What angle, when subtracted from 90 degrees, gives the same value?
90 - x = x
The supplement of x is the angle that you add to x to make 180 degrees. In other words, 180 - x = the supplement of x.
For x^3-11x^2+33x+45 , we can make it an equation so <span>x^3-11x^2+33x+45=0. Next, we can find out if -1 or -3 is a factor. If -1 is a factor, than (x+1) is factorable. Using synthetic division, we get
x^2-12x+45
___ ________________________
x+1 | x^3-11x^2+33x+45
- (x^3+x^2)
_________________________
-12x^2+33x+45
- (-12x^2-12x)
______________
45x+45
-(45x+45)
___________
0
Since that works, it's either B or D. We just have to figure out when
</span> x^2-12x+45 equals 0, since there are 3 roots and we already found one. Using the quadratic formula, we end up getting (12+-sqrt(144-180))/2=
(12+-sqrt (-36))/2. Since sqrt(-36) is 6i, and 6i/2=3i, it's pretty clear that B is our answer
