21.4
it’s an equal triangle so you do
2 x 3 = 6
6 x 3 = 18
2(1 x 1.7) = 3.4
18 + 3.4 = 21.4
Answer:
let, the days for 10 men be x
- 30/10=x/30
- 900=10x
- x=900/10
- x=90
so 10 men can complete the same work in 90days.
Hope it helps.
Answer:
Step-by-step explanation:
If x is inversely porportionaly to y, then for some constant k,
Since y is 4 when x = 18, k is equal to 4*18=72, so the equation is:
Answer:
Step-by-step explanation:
We want to simplify:
We rewrite as:
We split the radical sign to obtain:
Simplify the square root for the perfect squares to get:
Therefore the simplified form is:
X² + 4x + 4 = (x+2)²
<span>B. x + 2</span>