Add the two expressions. −6m+10 and 9m−9 Enter your answer in the box.

Mathematics

1 answer:

mixer [17]3 years ago

8 0

3m+1 I’m pretty sure

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A homeowner is installing a swimming pool. You have been asked to install a circuit to operate a 600-watt underwater light and a

insens350 [35]

Answer:

The answer is given below

Step-by-step explanation:

The loads in the circuit are continuous duty, so the circuit can only loaded to 80% of its current rating.

Calculate 80% current rating of the circuit breaker.

Icb = [ 80/100] (20 A)

= (O.8) (20 A )

= 16 A

Now we assume that the value of supply voltage is 120 V

Now we will calculate current flows via under water light which will be taken as Load 1

Ii = 500 W/120 V

= 4.167 A

Current via the circulating pump which will be taken as Load 2 IS 8.5 A

I = load1 + load 2

= 4.167 A + 8.5 A

= 12.67 A

The total current in the circuit obtained which is less than the circuit breaker rating current. Therefore, the power can be operated for both the loads.

3 0

3 years ago

What is the exact value of the expressions the square root of 180 − the square root of 125 the square root of 5 ? simplify if po

joja [24]

$\sqrt{180}-\sqrt{125}+\sqrt5=\sqrt{36\cdot5}-\sqrt{25\cdot5}+\sqrt5\\\\=\sqrt{36}\cdot\sqrt5-\sqrt{25}\cdot\sqrt5+\sqrt5\\\\=6\sqrt5-5\sqrt5+\sqrt5\\\\=\boxed{2\sqrt5}$