If u multiply the first equation by -4, u get -2x - y = -20
and when u add the 2 equations..
-2x - y = -20
2x + 3/8y = 5
-----------------
0 - 5/8y = -15.....u notice that the x terms r eliminated.
Answer:
1500 g
Step-by-step explanation:
To find the mass of each bag, we divide 6 kg by 4.
(6 kg)/4 = 1.5 kg
Now we convert 1.5 kg to g.
1 kg = 1000 g
1.5 kg * (1000 g)/(1 kg) = 1500 g
Step-by-step explanation:
when multiplied together, the gradients of the 2 graphs should equal -1 (of they are perpendicular).
x-7y=4
-7y= -x + 4
y= -1/7 x + 4/7
21x+ 3y=11
3y=-21x+11
y=-21/3 x + 11/3
-21/3 * -1/7 = 1
when multipled together, the 2 gradients dont equal -1 therefore they are not perpendicular
unless I've made a mistake with the signs at some point haha
The roots of a function are when y=0. The function seems to cross the x-axis at -3,-1, and 8.
Thus, the answer is C.
