Simplify: 21/36 Dddrtghjdrsrsxyffyyguguggu

Please help me

Alla [95]

Answer:

Step-by-step explanation:

Let one number = x

Let the other number = y

x + y = 9

xy2 is a maximum

Since we need positive numbers, we assign values of x and y respectively that will give us a sum of 9.

x: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

y: 9, 8, 7, 6, 5, 4, 3, 2, 1, 0

Next, we square the values of y.

y2: 81, 64, 49, 36, 25, 16, 9, 4, 1, 0

Next, we multiply x by y2 to see which product is the highest value.

x : 0 , 1 , 2 , 3 , 4 , 5 , 6, 7, 8, 9

y2 : 81, 64, 49, 36, 25, 16, 9, 4, 1, 0

We can eliminate x = 0, x = 8 , and x = 9 , since the product of xy2 is of lowest value.

1 x 64 = 64

2 x 49 = 92

3 x 36 = 108

4 x 25 = 100

5 x 16 = 80

6 x 9 = 54

7 x 4 = 28

The highest product value here is 108.

The two numbers in the solution are 3 and 6.

7 0

3 years ago

Which polynomial is equivalent to (11r – 8) + (5r - 9)?

pickupchik [31]

<h3>Answer: 16r - 17</h3>

Work Shown:

(11r - 8) + (5r - 9)

11r - 8 + 5r - 9

(11r+5r) + (-8-9)

16r - 17

4 0

3 years ago

Use summation notation to express each of the following calculations Add the scores and square the sum O 2(SX) Square each score

iragen [17]

a)

Add the score and then square the sum.

By using the summation notation we can write the above statement is (Σx)²

b)

Square each score and then add the squared values.

By using the summation notation we can write the above statement is Σx²

Subtract 2 point from each score and then add the resulting values.

By using the summation notation we can write the above statement is Σ(x-2)

Subtract 1 point from each score and square the resulting values. Then add the squared values.

By using the summation notation we can write the above statement is Σ(x-1)²

7 0

4 years ago

Micah can do 75 push up in 3 minutes Edward Lowe can do 130 push-ups in 5 minutes are these rates equivalent

IrinaK [193]

No because Edward can do 26 push-ups per minute while Micah can only do 25 push-ups per minute

6 0

4 years ago

Delta Airlines quotes a flight time of 2 hours, 5 minutes for its flights from Cincinnati to Tampa. Suppose we believe that actu

gregori [183]

Answer: 0.5

Step-by-step explanation:

Given : Delta Airlines quotes a flight time of 2 hours, 5 minutes for its flights from Cincinnati to Tampa.

i.e. Flight time = 2(60) +5= 125 minutes [∵ 1 hour = 60 minutes]

Actual flight times are uniformly distributed between 2 hours and 2 hours, 20 minutes.

i.e. In minutes the flight times are between 120 minutes and 140 minutes.

Let x be a uniformly distributed variable in [120 minutes, 140 minutes] that represents the flight time.

Since the probability density function for x uniformly distributed in [a,b] is $f(x)=\dfrac{1}{b-a}$

⇒ Probability density function for flight time : $\dfrac{1}{140-120}=\dfrac{1}{20}$

5 minutes late than usual time = Flight time+ 5 = 125+5 = 130 minutes

Now , the probability that the flight will be no more than 5 minutes late will be :-

$\int^{130}_{120} \dfrac{1}{20}\ dx\\\\=\dfrac{1}{20}[x]^{130}_{120}\\\\= \dfrac{130-120}{20}\\\\=\dfrac{1}{2}=0.5$

Hence, the probability that the flight will be no more than 5 minutes late is 0.5.

3 0

3 years ago

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