Answer:
147 square feet
Step-by-step explanation:
If there are 3 measurements, it will be a rectangular prism.
7x7=49
49x3=147
Let's plug the values and see which couple satisfy the equation: since
, if we plug the values from the first option
we have

which is correct.
If we plug the values from the second option
we have

which is not correct
If we plug the values from the third option
we have

which is not correct
If we plug the values from the fourth option
we have

which is not correct
So, the answer is the first one.
Answer:
√3
Step-by-step explanation:
We cannot solve this operation directly. Because cot7pi/6 is undefined.
We know that 1/tan= cot.
so we will first take the reciprocal of cot that is 1/tan.
So,
cot7pi/6= 1/tan 7π/6
∵7π/6 = 210 where pi=180
so cot7π/6 =1/tan210
cot7π/6 =1/1÷√3
cot7π/6 = √3
Answer:
CD= 34
Step-by-step explanation:
As CD is the diameter the circle divides to half and point E is on the circle ∴∠CED =90° (angle of a semi circle)
as CD is the diameter it would be the lengthiest of all ∴ CD is hypotenuse
so 
= CD=
=CD=
∴CD=34
If I understood given text quite well than equation will be
4x + 3 (x+4) = -9 => 4x+3x+12=-9 => 7x=-21 => x=-21/7=-3 => x= -3
Good luck!!!