Answer:
6.3 & -6.3
Step-by-step explanation:
6.3 is the same as -6.3, hope this helps
Answer: Second option: (4,0) and (-9,0)
f(x)=x^2+5x-36
The x-intercepts of the graph of a function f(x) are the values of the variable x that makes f(x)=y equal to zero. To find these values we only have to equal f(x)=y to zero:
f(x)=y=0
x^2+5x-36=0
Factoring the polynomial:
(x+9)(x-4)=0
Using that if a b=0, then: a=0 or b=0
with a=x+9 and b=x-4
x+9=0 or x-4=0
Solving for x:
x+9-9=0-9 or x-4+4=0+4
x=-9 or x=4
Then the x-intercepts are the poitns (x,y)=(x,0):
(4,0) and (-9,0)
The general trench of the sequence is that it is going down in halves, so the next term in the sequence should be 1.5 :)
Answer:
-15
Step-by-step explanation:
x2 – 2(x - y) – 23
if x = -3, y = 4 and z = -1
-----------------------------------------------
-3 x 2- (-3 - 4) - 23
-15
Answer:
1 hour later , 21 pages read
Step-by-step explanation:
x hour later they will read the same number of pages
Tori: 16 + 5x
cora: 13 + 8x
16 + 5x = 13 + 8x
minus 5x each sides: 16 = 13 + 3x
minus 13 each sides: 3 = 3x
divide 3 each sides: x = 1
1 hour later both of them will read 16 + 5 x 1 = 21 pages
check cora: 13 + 8 x 1 = 21
