I think that it would be true, but, don't make me promise that it's right, lol XD
Answer:
Then, a=-1 and b=-1
Step-by-step explanation:
We need to solve the following system of equations using the adition method:
2a+3b=-1 (i)
3a+5b=-2 (ii)
First, we multiply the equation (i) by -3 and the equation (ii) by 2, so we get:
-6a-9b=3
6a+10b=-4
Adding the two equations we have:
-6a-9b=3
6a+10b=-4
--------------------------
0 + b = -1
Then b=-1. Now, let's substitute the value of b into equation (i):
2a+3b=-1
2a + 3(-1) = -1
2a -3 = -1
2a = 2
a = 1
Then, a=-1 and b=-1
A = bh/2
A = 2.4 x 3 / 2
A = 7.2 / 2
A = 3.6 m²
They will need 4 bags of pebbles.
Answer and steps in picture
Step-by-step explanation:
by ours to do if the radius