Answer:
140cm
Step-by-step explanation:
We first have to change 2.4 meters into centimeters. And the formula for that is (x)m = (x)cm x 100.
So 2.4 x 100 = (x)m. We can solve this by moving the "." two times to the right and we will get 2.4m = 240cm.
The next step is to divide it by twelve because Billy wants to share it with 12 friends. 240cm/12 = 20cm per person.
Then we have to multiply 20 with 7 to see how many centimeters 7 friends would get.
20*7 = 140. So the answer is 140cm.
1) (x+3)(x+4)
2) (x-9)(x+1)
3) (x-6)(x+5)
4) (x-3)(x-5)
5) (x-10)(x+1)
6) (x+3)(x+8)
7) (x-2)(x-8)
8) (x+4)(x-1)
9) (x-9)(x+5)
10) (x-8)(x+2)
x=πn, n∈Z
if sin²2x=1-cos²2x, then
1-cos²2x-2cos2x+2=0; ⇒ cos²2x+2cos2x-3=0; ⇔ (cos2x+3)(cos2x-1)=0;
Because it's a multiplication, we can choose this:
72=8x9