Lizzie buys 3 clocks for a total cost of £50 at a car boot sale. She sells 2 clocks for £22 each and the other for clock for £20
1 answer:
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32.5 % of lab are wireless devices
<em><u>Solution:</u></em>
Given that there was a total of 30 computers and the computer lab is removing 3 broken computers and adding 13 wireless devices
Now we can first find out total number of computers and devices in lab
total number of computers and devices in lab = 30 computers - 3 + 13 wireless devices
total number of computers and devices in lab = 30 - 3 + 13 = 40
So there are 40 computers and wireless devices in lab
<em><u>To find: what percent of the lab are wireless devices</u></em>
So we have to find what percent of 40 is 13
Let "a" be the required percent
a % of 40 = 13
32.5 % of of lab are wireless devices
Answer:
<h3>He should have found 8 as the exponent, not –8.</h3>Step-by-step explanation:
Given the expression simplified by Pablo as
On simplification we have;
According to one of the law of indices
Applying this law to the question will give;
Based on the calculation above, the exponent of 2 is 8 which means that Pablo should have found 8 as the exponent, not –8.