Answer:
undefined
Step-by-step explanation:
Becouse any number under a root sign that is negative does not give any answer.Therefore it doesn't exist in real number system.
Answer:
b
Step-by-step explanation:
each always has a x
Answer:
it is C
Step-by-step explanation:
40% of 20 is 8
so 15% of 20 is 3
X - the rate charged by the first mechanic
y - the rate charged by the second mechanic
The sum of the two rates was $155.

The first mechanic worked for 10 hours, the second mechanic worked for 5 hours, and together they charged $1000.

Set 155-x and 200-2x equal to each other:

The rate charged by the first mechanic was $45, and the rate charged by the second mechanic was $110.
First since it is a triangle and it says meter square that means its an area
so the area is 1/2hb h stands for height and b stands for base
so
a=1/2bh
a=1/2(12)(9)
a=1/2(108)
a=54m^2
It says the cost of sail is $15 per square meter
so
$15*54
=$810
Why times by 54 because if 1 piece is $15 how about 54pcs?
thats why we will multiply it