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2 years ago

1. 12x^2 +2xy

Mathematics

1 answer:

brilliants [131]2 years ago

4 0

Answer:

1. 12x^2 +2xy

Step-by-step explanation:

1. 12x^2 +2xy

2. 21ab^2 +35ab

3. w^2+15w+ 14

4. m^2-12m+20

5. 2k^2+5k-3

6. -r^2-5r-6

7. 8y^2+26y+15

8. -2d^2-7d-5

9. (h+6)(h-4)=0

10. s^2-7s+12=0

11. -2d^2-7d-5

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For a diamond problem what two numbers' sums equal 31 and their product is 234?

s344n2d4d5 [400]

Let

x-------> the first number

y------> the second number

we know that

$x+y=31$

$x=31-y$

equation $1$

$x*y=234$

equation $2$

substitute equation 1 in equation 2

$(31-y)*y=234\\ 31y-y^{2} =234\\ -y^{2} +31y-234=0$

using a graph tool-----> to resolve the second order equation

see the attached figure

the solution is

$13 and 18$

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2 years ago

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The large sphere has a diameter of 12 feet.

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Answer:

2520ft

Step-by-step explanation:

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3 years ago

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A hiker climbs a 5-mile trail up a mountain in 2 hours. On the return trip downhill, she walks the same trail and returns to her

Ivahew [28]

Answer:

3.33 miles per hour

Step-by-step explanation:

The total distance traveled by the hiker is 5 * 2 = 10 miles, and the total time travelled is 2 + 1 = 3 hours.

So, to find the average speed of the entire trip, we can use the formula:

distance = speed * time

With distance = 10 and time = 3, we have:

10 = speed * 3

speed = 10/3 = 3.33 miles per hour.

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2 years ago

A right circular cylinder is inscribed in a sphere of radius r. Find the dimensions of such a cylinder with the largest possible

Burka [1]

Answer:

Largest volume in terms of r = 4r^3π/ 3√3 or you could write it as 4√3r^3π/9.

Step-by-step explanation:

3 0

3 years ago

A campus deli serves 101 customers over its busy lunch period from 11:30 am to 1:30 pm. A quick count of the number of customers

iogann1982 [59]

Answer:

21.38 minutes

Step-by-step explanation:

the total number served = 101

teh number of hours that is spent in serving from 11.30 to 1.30 = 2 hours

Lq = average number of those that are in line = 18 customers

from here we are to find the flow rate

= $\frac{total served}{service hour}$

= 101/2 = 50.5

the average time in waiting =

Lq/flow rate

= 18/50.5

= 0.3564 hours

convert to minutes = 0.3564 * 60 minutes

= 21.38 minutes

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3 years ago