Answer:
y=ax+1
Step-by-step explanation:
y=mx+b where m=slope and b=y-intercept
y=ax+1
1. find the sum of angles .
If the sum=180,then it forms a triangle.
2. your answer is wrong.
sum of three angles=180
and find x.
3.find the sum of two sides and see if it is > third angle
then it forms a triangle.(repeat with different pairs)
4.fourth case
Answer:99.33
Step-by-step explanation:
Answer:
f(x)=0.333*(1*x+-4)*(1*x+1)
Step-by-step explanation:
<u>Your exercise:</u>
Find a quadratic function with roots at 4 and -1 whose graph goes through the point -2 .
The function f(x)=a*(1*x+-4)*(1*x+1) has the desired roots.
Insert the point (1, -2) to find a.
-2=a*(1*1+-4)*(1*1+1)
-2=1*a*(1*1+-4)*(1*1+1) (add 1 to -4)
-2=1*a*-3*(1*1+1) (add 1 to 1)
-2=1*a*-3*2 (Multiply -3 by 2)
-2=1*-6*a (Swap both sides of the equation.)
-6*a=-2 : (-6)
1*a=0.333
f(x)=0.333*(1*x+-4)*(1*x+1)
Answer:
Step-by-step explanation:
Amount invested 39000 dollars
Let x be invested at 8% and y at 9.5%
Then interest on X = 0.08x and interest of Y =0.095 Y
The equations that connect x and y are
![x+y =39000\\-0.08x+0.095y=467.50](https://tex.z-dn.net/?f=x%2By%20%3D39000%5C%5C-0.08x%2B0.095y%3D467.50)
Multiply second equation by 100 and I equation by 8
![8x+8y = 312000\\-8x+9.5y=46750\\----------------------\\17.5y =358750\\y=20500](https://tex.z-dn.net/?f=8x%2B8y%20%3D%20312000%5C%5C-8x%2B9.5y%3D46750%5C%5C----------------------%5C%5C17.5y%20%3D358750%5C%5Cy%3D20500)
![x = 39000-20500 = 18500](https://tex.z-dn.net/?f=x%20%3D%2039000-20500%20%3D%2018500)
18500 at 8% and 20500 at 9.5%