To find X, set up a ratio with the given dimensions:
10/15 = X/42
Cross multiply:
420 = 15x
Divide both sides by 15:
x = 420 / 15
x = 28
To factor quadratic equations of the form ax^2+bx+c=y, you must find two values, j and k, which satisfy two conditions.
jk=ac and j+k=b
The you replace the single linear term bx with jx and kx. Finally then you factor the first pair of terms and the second pair of terms. In this problem...
2k^2-5k-18=0
2k^2+4k-9k-18=0
2k(k+2)-9(k+2)=0
(2k-9)(k+2)=0
so k=-2 and 9/2
k=(-2, 4.5)
Answer:
n=46
Step-by-step explanation:
Since this is a right triangle, you are left with 90 degrees
2n-2=90
2n=92
n=46
Answer:
= 
Step-by-step explanation:
The values are in proportion if the right side is a multiple of the left side
Consider
× 
= 
=
Thus and are in proportion
This does not happen for any of the other three.
Answer:
g+3=b
Step-by-step explanation:
You cant fully solve without more information
