**Answer:**

Re= 5*10^5

**Step-by-step explanation:**

The numbers are not totally clear as they repeat each other. Under this consideration I will assume the closest values according to the advertised.

r=0.5m

V=1m/s (or) V=11m/s

We know that Reynolds number is given by,

Or for the another velocity

In reality, all of them are parallel to y=3x-8.

To find the one that crosses (4,-5) you will probably have to substitute for 4 in all formulas and check if .

Work done:

The only option that gave us an equality was **B.** Therefore, **B.** is the answer.

First, find 20% of 5 hours. 20% is also 1/5 of something, and 1/5 of 5 is 1.

Multiply 5 by 3 for the 300%, getting 15 hours, and add 1 for the 20%.

He spent 16 hours on the project. Hope this helps!

**Answer:**

maybe the second equation i.e(10+1.2)x=24

**Answer:**

never because you're multiplying the number -2 times so it will be positive only if the variable is positive.

**Step-by-step explanation:**

what if x=2?

2^-2

=
1
/2*2

=
1
/2^2

=
1
/4 or 0.25

what if x=-5?

-5^-2

=−1*5−2

=−1* 1
/5*5

=
−1
/5*5

=
−1
/5^2

=
−1
/25 or-0.04

n