9514 1404 393
Answer:
x² +2x +1
Step-by-step explanation:
Substitute the given expressions and collect terms.
p(x) -t(x)
(x² +3x -4) -(x -5)
x² +3x -4 -x +5 . . . . . eliminate parentheses
x² +2x +1 . . . . . . . . . .combine like terms
Answer:
t=9.8
Step-by-step explanation:
t= 9.8
don't forget to add the time measurement such as hours.
Answer:
y = 2x - 3
Step-by-step explanation:
The graph is a straight line, thus linear with equation
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = 
with (x₁, y₁ ) = (3, 3) and (x₂, y₂ ) = (6, 9) ← 2 points on the line
m =
=
= 2 , thus
y = 2x + c ← is the partial equation
To find c substitute either of the 2 points into the partial equation
Using (3, 3 ), then
3 = 6 + c ⇒ c = 3 - 6 = - 3
y = 2x - 3 ← equation relating x and y
Answer:
p = 0.68 and p^ = 0.6
Step-by-step explanation:
Jackie received 68% of the votes in an election.
Here p is the decimal equivalent of 68 %.Hence ,
p = 0.68
Now we have taken a sample of 30 people from the total number of voters and we have to find the percentage of votes that Jackie gets in this .
Out of 30 people Jackie got 18 votes. Hence,
p^ =
= 0.6
Hence the values are
p = 0.68 and p^ = 0.6
In the random sample we have taken the probability of Jackie has decreased but it will be compensated by another sample where it will be more.
-12C
if it rose 8 degrees, then just subtract 8 from 20.