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almond37 [142]
4 years ago
6

The expression (2x^2+6x+5)-(6x^2+3x+5) is equivalent to

Mathematics
1 answer:
oksano4ka [1.4K]4 years ago
7 0

Answer:

-4x^2+3x


Step-by-step explanation:

collect like terms

(2x^2-6x^2) + (6x-3x) + (5-5)

simplify

-4x^2 + 3x

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A daily mail is delivered to your house between 1:00 p.m. and 5:00 p.m. Assume delivery times follow the continuous uniform dist
german

Answer:

25% of deliveries

Step-by-step explanation:

This is a uniform distribution with parameters a = 1.00 and b =5.00. With these conditions, the following probability distribution functions can be applied:

P(X \leq x)=\frac{x-a}{b-a}=\frac{x-1.00}{5.00-1.00}\\P(X \leq x) = \frac{x-1}{4}\\P(X \geq x) = 1- P(X \leq x) \\P(X \geq x)=1- \frac{x-1}{4}

Therefore, the probability that X ≥ 4:00 p.m. is given by

P(X \geq 4)=1- \frac{4-1}{4}\\P(X \geq 4)=0.25=25\%

Thus, 25% of deliveries are made after 4:00 p/m.

7 0
3 years ago
[8 + (24 x 3)] divided by 7 <br><br> Use PEMDAS &amp;’ show work .
posledela

Answer:

11.43

Step-by-step explanation:

[8 + (24 x 3)] divided by 7

[8 + (72)] divided by 7

80/7

11.42857142857143

11.43 (I rounded it)

6 0
4 years ago
Read 2 more answers
Melaine has written 5/6 of her essay. she has written 15 pages so far. How long does her entire essay have to be?
MrMuchimi

Answer:

18

Step-by-step explanation:

3*5=15

Therefore, every time  she completed 3 pages that was a mark down.

3= 1/6     12=4/6

6=2/6     15=5/6

9=3/6     18=6/6 or 1 whole

7 0
3 years ago
What is x-2a when a=3 and x=-3
Softa [21]

Answer:its 3

Step-by-step explanation:

7 0
3 years ago
A certain forest covers an area of 2400 km^2. Suppose that each year this area decreases by 5.75%. What will the area be after 8
kolezko [41]
We have to use the function A(t)= a(1 +/- r)^t
So A is going to be the answer- the area after 8 years. t is going to be 8, because t is time. a is 2400 because that's the starting value. Finally, we're going to turn 5.75% into it's decimal form of .0575. That's going to be r, and because the area is decreasing, we will subtract r from 1.
Our new function is:
A=2400(1-.0575)^8
Simplify a little bit.
A=2400(.9425)^8
Bring .9425 to to power of 8 and then multiply by 2400 because PEDMAS.
A=1494.38366866
The rounded answer is 1494 kilometers squared.
5 0
3 years ago
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