Y=mx+b
M is the slope and b is the y-intercept
Answer:
23√2
Step-by-step explanation:
1. Simplify √8 to 2√2
19√2 +2* 2√2
2. Simplify 2*2√2 to 4√2
19√2 + 4√2
3. Simplify
23√2
Answer:
Speed of the biker is 13 mph and that of wind is 1 mph.
Step-by-step explanation:
Given:
Time taken by the biker to cover a distance is 7 hrs when he was travelling against the speed of the wind.
Time taken to cover same distance is 6 hours when he was travelling with the speed of the wind.
We have to find the speed of the biker and that of the wind.
Let the speed of the biker is "b" mph
And the speed of the wind is "w" mph
As we know:
Distance = Product of speed and time
Re-arranging the above situation in terms of equation.
⇒ ⇒
⇒ ...(i) ⇒ ...(ii)
Multiplying equation (i) with 6 and equation (ii) with 7 so that we can eliminate one variable that is "w" after adding both the equation.
⇒ equation (iii)
⇒ equation (iv)
⇒ Adding both the equations.
⇒
⇒
⇒ mph.
Speed of the biker is 13 mph.
⇒ Plugging b=13 in equation (ii),we have:
⇒
⇒
⇒
⇒
⇒
⇒
⇒ mph.
Speed of the biker is 13 mph and the speed of the wind is 1 mph whenever the biker is with the speed of the wind the biker's speed increases by 1 mph and subsequently decreases when he is against the speed of the wind.
Answer:
Step-by-step explanation:
(2x-1)²=x²+4²
4x²-4x+1=x²+16
3x²-4x-15=0
a=3 b=-4 c= -15
D=b²-4ac
=16-4*3*(-15)=196
x1=-b+√D/2a=4+14/6=3
x2=-b-√D/2a=4-14/6=-10/6=-5/3
To find the unit rate for the T-shirts:
you divide the $150 by the number of T-shirts.
150/50 = 3
50/50 = 1
Therefore, one T-shirt = $3
Do the same with the rest:
$3/shirt
$4.43/video game
6 tablespoons of sugar/glass of cocoa cola
Hope that helps!
P.S. I don't know what you mean when you say to write an equation but hopefully you can still figure it out!