Answer:
2.4 days is the answer.
Step-by-step explanation:
It takes 15 men working steadily 4 days to dig the foundation for a new apartment.
Let 25 men takes 'x' days to complete the same task.
Applying ratio we get:
Solving this we get;
=> 
So, x = 2.4 days
Add <span>19x</span> and x to get <span>20x</span>.<span><span><span><span><span>20x</span><span>−y</span></span><span><span>−2</span>z</span></span>+<span>5y</span></span>+<span>2z</span></span>Add <span>−y</span> and <span>5y</span> to get <span>4y</span>.<span><span><span><span>20x</span>+<span>4y</span></span><span><span>−2</span>z</span></span>+<span>2z</span></span>Add <span><span>−2</span>z</span> and <span>2z</span> to get 0.<span><span><span>20x</span>+<span>4y</span></span>+0</span>Add <span>20x</span> and 0 to get <span>20x</span>.<span><span>20x</span>+<span>4<span>y
</span></span></span>
hope i helped best of luck :)
<span><span><span /></span></span>
since its the zeros it should be x -/+ something
(x-1)(x+1)(x+4)
multiply for standard form
((x^2)-1)(x+4)
x^3-x
+ x^2 -4
x^2 + x^2 -x -4
Not all heroes wear capes. Anyways thank you!
Answer:
d = 6.1m
n = 7km
Step-by-step explanation:
To find the variables, use tan
⇒ tan = 
finding d:
⇒tan 63 = 
tan of 63 is 1.963
⇒ 1.963 =
multiply 3.1 on both sides
⇒ 1.963 x 3.1 = x 3.1
⇒ 6.0853 = d
round to the nearest tenth:
⇒ 6.0853 = 6.1
finding n:
⇒ tan 45 = 
tan of 45 is 1
⇒ 1 =
multiply 7 on both sides:
⇒ 1 x 7 = x 7
7 = n
