Answer:
, OR
, OR -1.2
Step-by-step explanation:
When there is a (+) in front of an expression in parentheses, the expression remains the same
Calculate the sum or difference
An 18 tip is left on an $84 dinner bill. Write 2 different expressions that can be used to determine the total paid for dinner
1 answer:
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to find the sum:
2(3t-4) - (t^2 + 2) - 4t(t-1)
6t - 8 - t^2 - 2 - 4t^2 + 4
6t - 8 - 5t^2 + 2
-5t^2 + 6t - 6
by the sum of roots and product of roots formulae
ax^2 + bx + c
x + y =
x + y =
xy =
xy =
x - y =
Answer:
Step-by-step explanation:
We are given that 30% of California residents have adequate earthquake supplies.
a) Ramon variable X denotes the number of the california residents that have adequate earthquake insurance
B) x can take value 1 ,2 ,3 ......
C)The distribution of random variable is geometric distribution with parameter p=0.3
The pmf of geometric distribution is
D)P(X=1) or P(X=2)=P(X=1)+P(X=2)
P(X=1) or P(X=2)=
E)
F)
p is the resident who does not have adequate earthquake supplies.
p = 1-0.3 = 0.7
G)
Answer:
Manuel is moving with a constant speed and reach his destination at 5 units distance from his house after 3 units of time.
He took rest at his destination for 4 units of time.
Then he reach his house at 5 units distance in 1 unit time.
Step-by-step explanation:
See the graph attached.
Manuel is riding his bike.
As the graph shows that Manuel starts his journey from his house and the time counts starts and then he is moving at a constant speed and reach his destination at 5 units distance from his house after 3 units of time.
The constant speed is units.
Then he took rest at his destination for 4 units of time.
After that, he again starts to move towards his house at a constant speed and reach his house at 5 units distance in 1 unit time.
Therefore, his speed of return is units. (Answer)