Answer:
Step-by-step explanation:
F(x)=2x^2+5x-16 for x=4
1. 5x72+6 over 72 = 366/72
2. 8x9+3 over 9. = 75/9
Answer:
(4,-6)
x=4, y=-6
It wants me to type it longer help I just know the answer
Answer:
24
Step-by-step explanation:
if we observe carefully we can see that the difference in the number of dots from the first picture to the second picture is 5
and the difference in the number of dots from the second picture to the third picture is 7
so there might be a chance that the difference between the 3rd figure and 4th figure may be 9
so my answer is the number of dots in the 3rd picture + 9
15+9= 24
Solution :
2a + 2b = 7 ...1)
4a + 3b = 12 ...2)
In equation, 1)
a = (7 - 2b)/2 ...3)
Putting value of a in equation 2) we get :
4 × (7 - 2b)/2 + 3b = 12
2( 7 - 2b ) + 3b = 12
14 - 4b + 3b = 12
b = 2
Putting value of b in 3) we get :
a = ( 7 - 2×2)/2
a = 3/2 = 1.5
Now,
2x - 3y = 16 ...5)
x + 2y = -6 ...6)
x = -6 - 2y
Putting above value of x in eq 5) , we get :
2( -6 - 2y ) - 3y = 16
-12 - 4y - 3y = 16
7y = -28
y = -4
x = -6 - ( 2× -4 )
x = 2
Hence, this is the required solution.
