There are 7 rocks altogether they weigh 5kg. 6 of the rocks each weigh 720g what is the weight of the other rock

680g

Step-by-step explanation:

Weight of the other rock

= 5kg - 6(720g)

= 5000g - 4320g

= 680g

680 g

Step-by-step explanation:

7 rocks ⇒ 5 kg ⇒ 5000g

6 of the rocks each weigh 720g .

So,

The total weight of those 6 rocks is,

6 rocks ⇒ 720 g × 6

             ⇒ 4320 g

Now you have to find the weight of the other rock.

There fore, let the weight of the other rock be x

x + 4320 = 5000

x = 5000 - 4320

x =  680 g

So, the weight of the other rock is 680 g.

Hope this helps you.

8

step-by-step explanation:

just put √(2) * √(32) into a calculator. that will make the answer be 8.

(1, –1), (16, –4), (36, –6)

step-by-step explanation:

given that the function is

this can also be written as

we have to graph this function and check which list of points lie on the graph

see attachment for graph:

we find that the points lying are (1,-1) (16,-4) and (36,-6)

since square root is there we find that x can only be posiitve but y can be since square root both positive and negative.