Answer:
(1,1)
Step-by-step explanation:
3x + 2y = 5
4x − 9y = −5
Multiply the first equation by 4 and the second equation by -3 so we can eliminate x
4(3x + 2y) = 5
*4
Distribute
12x +8y = 20
-3(4x − 9y) = −5*-3
-12x +27y = 15
Add the two new equations together
12x +8y = 20
-12x +27y = 15
------------------------
35y = 35
Divide by 35
35y/35 = 35/35
y=1
Now we can find x
3x+2y =5
3x+2(1) =5
3x +2 =5
Subtract 2 from each side
3x+2-2=5-2
3x=3
Divide by 3
3x/3 = 3/3
x=1
(1,1)
Answer:
Step-by-step explanation:
From the question we are told that:
Weight of Roger
Distance of Roger from fulcrum
Weight of Ellen
Generally the equation for distance-weight relationship is mathematically given by
Therefore
Therefore the distance from the fulcrum she must sit to balance the seesaw is given as
The answer will be 388.6 because you will use the formula V=pi.r^2.h.
pi we know is 3.14 we also know that radius is half the diameter so half of 5 is 2.5 and the height is 9 so here is what we have so far. V=3.14x2.5^2x9.
2.5x2.5=13.75 13.75x3.14=43.175 43.175x9=388.575 and if we round that it will be 388.6 so your answer is 388.6
Answer:
$6,720
Step-by-step explanation:
20% of 5600 is 1120.
1120+5600= 6,720
Let 185lb equate to 100%
20lb of fat will be ?
= 10.81%
Dave has 10.81% of body fat and it falls at the athlete category.