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3 years ago

Add or subtract them in simplest form please help me as fast as possible

Mathematics

1 answer:

NARA [144]3 years ago

8 0

Answer:

Okay so im seeing you need help okay I will tell you how to do number 21 as an example

Step-by-step explanation:

Look for a commen donominater of the 3/8 and 1/3 the denominater would be 24 so 8 times 3 and 3 times 3 so those would be 9/24 and 3/24 , do the 8 plus the ten and you get 18 so 18+ 9/24+3/24= 18 12/24, or 18 1/2

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Find the area between y=(x-2)ex and the x-axis from x=2 to x=4.

mojhsa [17]

Answer:

$e^4+e^2$

Step-by-step explanation:

It can be found by integral.

First let's find the intersection points.

$(x-2)e^x = 0$

Only intersection point is x = 2.

And it is asked to find the area in the interval (2, 4).

$\int\limits^4_2 (x-2)e^x \,dx=?$

We will use integration by parts.

$x-2=u\\dx=du\\e^xdx=dv\\e^x=v$

$\int\limits^4_2 (x-2)e^x \,dx=uv-\int vdu=(x-2)e^x-\int e^xdx=(x-2)e^x-e^x=\\\\=(x-3)e^x|^4_2=(4-3)e^4-(2-3)e^2=e^4+e^2$

3 0

3 years ago

R/3 + 5 < 8<br><br> please help

Feliz [49]

Answer:

r<9

Step-by-step explanation:

r/3 + 5 < 8

Subtract 5 from each side

r/3 + 5-5 < 8-5

r/3 < 3

Multiply each side by 3

r/3 *3 <3*3

r<9

3 0

3 years ago

Giving all my points

Dominik [7]

The answer is $2.50 because you do 145-132.50=12.5
Then you divide by 5 because that’s the difference between students then the final answer is 2.50

4 0

3 years ago

Find the distance between the two points in simplest radical form. (−3,6) and (−8,−6)

pashok25 [27]

Answer: The distance between the two points is 13.

8 0

2 years ago

Two different airlines have a flight from Los Angeles to New York that departs each weekday morning at a certain time. Suppose t

marusya05 [52]

Answer: 0.8167

Step-by-step explanation:

Let E denotes the event that the first airline's flight is fully booked on a particular day, and F denotes the event that the second airline's flight is fully booked on that same day.

Given : P(E) = 0.7, P(F) = 0.6, and P(E ∩ F) = 0.49.

Then, by conditional probability formula , we have

$P(E|F)=\dfrac{P(\cap F)}{P(F)}\\\\=\dfrac{0.49}{0.6}=0.816666666667\approx0.8167$

Hence, the probability that the first airline's flight is fully booked given that the second airline's flight is fully booked.= 0.8167

5 0

3 years ago