Answer: -42
explanation: you start with the innermost parentheses and work out
To put this into slope-intercept form (y=mx+b), you need to solve the equation for y.
4x + 7y = 14
First move the 4x to the right by subtraction.
Then isolate the y by dividing everything on both sides by 7. Be sure to divide **everything** by 7.
Answer: x=−1/2,4/3
Step-by-step explanation:
1. Split the second term in 6x^2−5x−4 into two terms.
6x^2+3x−8x−4=0
2. Factor out common terms in the first two terms, then in the last two terms.
3x(2x+1)−4(2x+1)=0
3. Factor out the common term 2x+1.
(2x+1)(3x−4)=0
4. Solve for x.
Ask: When will (2x+1)(3x−4) equal zero?
When 2x+1=0 or 3x-4=0
Solve each of the 2 equations above.
x=−1/2,4/3
Answer:
bro just use desmos
Step-by-step explanation:
it's a graphing calculator
this is for the Sin
*Remember that sin = opposite / hypotenuse*
a² + b² = c² (where a and b are legs and c is the hypotenuse)
From the picture, you can see:
a = 3
c = 4
Plug these into the equation and solve for b.
* a² + b² = c² *
step 1: 3² + b² = 4²
step 2: 9 + b² = 16
step 3: b² = 16 - 9
step 4: b² = 7
step 5: √(b²) = √7
step 6: b = ± √7
FOR COS:
From the picture, you can see that if θ is in quadrant II, b has to be negative.
b = -√7 = adjacent
Remember that cos θ = adjacent / hypotenuse.
cos θ = adjacent / hypotenuse
cos θ = (-√7 / 4)