Answer:
10a(1+5b)+50(b-1)
Step-by-step explanation:
10a-25+5b10a-25+5b10
10a+50ab+50b-25-25
10a+50ab+50b-50
10a(1+5b)+50(b-1)
5- 25
4- 20
2- 10
please give brainliest if correct
Answer:
a.
Step-by-step explanation:
The curve
is not a conic.
Convert to rectangular coordinates.
First multiply through by r.
Substitute
and
We can see clearly that this is not a conic.
is an equation of a cardioid.
is a circle.
is a parabola.
is an ellipse.
X = soft tacos
y = double deckers
Dory:
3x + 3y = 11.25
Nemo:
4x + 2y = 10.00
---Now to solve for x and y---
---We find LCM of either x or y then make them cancel each other---
Dory multiply by 2:
6x + 6y = 22.50
Nemo multiply by 3:
12x + 6y = 30.00
--eliminate y---
Nemo subtract Dory:
6x = 7.50
Therefore x = 7.50 <em />÷ 6 = 1.25
---Now substitute x = 1.25 in either equation.---
Dory:
3.75 + 3y = 11.25
Therefore 3y = 11.25 - 3.75
therefore 3y = 7.50
there fore y = 2.50
y = 2.50 , x = 1.25
Sorry, that this is so long, I hope you understand. This is called simultaneous equations, you can read up on it.
Speed = Distance/Time
Stewart:
Time = 7h
Speed = 35mph
Distance = 245miles ( 7x35)
Jewel:
Time = 5h
Distance = 245miles
Speed = 49mph (ANSWER)