(10)x= -7_______(i)
3x-5y= -16____(ii)
put value of x in (ii) then we have:-
3x-5y= -16
3(-7)-5y= -16
-21-5y= -16
-5y = -16+21
-5y = 5
y = 5/-5= -1
y= -1
(11)
Answer:
a = 12
Step-by-step explanation:
as C^2 = A^2 + B^2
by Pythagoras theorem
so
A^2 = C^2 - B^2
= 13^2 - 5^2
= 169- 25
144
as 12^2 is equal to 144
hence side a is equal to 12
Answer:
$140
Step-by-step explanation:
Joe earns $68 after working 8 hours because $8.50 time 8 equals 68
Maggie earns $72 after working 8 hours because
$9.00 times 8 equals 72
so altogether they earn $140
Check out the graph below. We see that (3,0) is a root or x intercept. More specifically, the graph only touches the x axis at this point, rather than cross over (in contrast to a root like (-2,0) ). We say that the root here is of multiplicity 2. The multiplicity is due to the exponent of 2 over the (x-3) factor.
You can also say that the graph is decreasing on the left side of (3,0) and then it bounces off the root x = 3 to increase afterward. In this region, the graph never goes below the x axis.
(1/2) * x^3 + 3.4y when X = 2 and Y = 5.
= (1/2) * (2^3) * 3.4(5)
= (1/2) * 8 * 17
= (1/2) * 136
= 136/2
= 68.