Answer:
The clue to find 'x' is-
- As both, the lines here are intersecting at a point to form VERTICALLY OPPOSITE ANGLES.
According to this theory (2x+20)=60
So, (2x+20)=60
= 2x=60-20
= 2x= 40
= x=40/2
= x=20 degrees
26x3=78
78-x=72
x=6
She needs to buy at least 6 more to have enough for 26 students
Answer:
x=-4 x=2
Step-by-step explanation:
y = x^2 + 2x - 8
Set equal to zero
0 = x^2 + 2x - 8
Factor
What two numbers multiply to -8 and add to 2
4 * -2 = -8
4+-2 = 2
0=(x+4) ( x-2)
Using the zero product property
x+4 =0 x-2 =0
x=-4 x=2
Step-by-step explanation:
really ?
this is just using the calculator and see. there is no knowledge or anything else needed.
sqrt(17) = 4.123105626...
so, where does it go ? ... well ? ... right, third position.
sqrt(20) = 4.472135955...
soooo .... ? ... well ... ? ... right, first position.
sqrt(23) = 4.795831523...
aaaaand ... ? ... right, fourth position.
sqrt(19) = 4.358898944...
well, really, there is only one position left : second
