3(6x-2)+ 2(x+5)
= 3*(6x)-3*2 +2x +2*5 (distributive property)
= 18x -6 +2x +10
= (18x +2x) +(10-6)
= 20x +4

The final answer is 20x+4.

Hope this helps~

6 0

3 years ago

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The ratio of the number of left handers to the number of right handers in a middle school is 6:15. If there are 120 left handers

fiasKO [112]

Answer:

300

Step-by-step explanation:

there are 9 15's in 120 which means its going by 15's 3 x 5= 15 and if it says 6 that means its timesed by 2. 15 x 2= 30 then 30 x 10= 300

8 0

3 years ago

A cable company wants to provide cell phone service for residents on an island. The function for the cost of laying the cable fr

laila [671]

Answer:

C) domain: all real numbers greater than or equal to 0

range: all real numbers greater than or equal to 13,000

Step-by-step explanation:

We have, the function for the cost of laying cable is given by,

$c(x)= 6500\sqrt{x^2+4}$ , where x is the length of the cable (in feet).

As, 'x' represents the length of the cable.

We have that, the value of x cannot be negative.

So, x ≥ 0.

Since, the domain of $c(x)= 6500\sqrt{x^2+4}$ is the set of points where $x^2+4\geq 0$ and we have that x ≥ 0.

Thus, the domain is 'Set of all real numbers greater than or equal to 0'.

Now, we substitute x= 0 in $c(x)= 6500\sqrt{x^2+4}$ .

i.e. $c(0)= 6500\sqrt{0^2+4}$

i.e. $c(0)= 6500\sqrt{4}$

i.e. $c(0)= 6500\times 2$

i.e. c(0) = 13000.

So, we get that the vertex point of the function is (0,13000).

Thus, the range is 'All real numbers greater than or equal to 13,000'.

5 0

3 years ago

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21. Find the volume of the figure below.

ryzh [129]

Answer:

b 2,557.51

Step-by-step explanation:

7 0

3 years ago