Step-by-step explanation:
19-4c=17
19-17=4c
2=4c
2/4=c
therefore, c=1/2
|x + 2| < 4
As neither x or 2 are negative, the bars do not matter and can be eliminated.
x + 2 < 4
Minus 2 from both sides, and because you subtracted, make sure to turn the 'less than' sign into a 'greater than' sign.
x > 2 is your answer
A quadratic has the form ax^2+bx+c
To factor a quadratic you want to find two values, j and k, which satisfy two conditions...
j*k=a*c and j+k=b
In this case ac=-140 and b=4.
The only values possible are j=14 and k=-10
so jk=-140 and j+k=4 which are the conditions we needed to satisfy...
Now you remove the linear, or "b term", from the original equation and replace it with jx and kx... and in this case you will have:
-2h^2-14h+10h+70 now you can factor out the greatest common factor from the first pair of terms and the second pair of terms...
-2h(h+7)+10(h+7) which is equal to
(-2h+10)(h+7) and you can factor the first term again if you wish...
-2(h-5)(h+7)
Answer:
65
Step-by-step explanation:
Im to lazy to do the math
Answer:
y=-10
Step-by-step explanation:
1) we can substitute x as -3:
so
y=3(-3)-1
y=-9-1
y=-10
hence when x=-3, y=-10
Hope this helps!
