Answer:
x=7−√10 or x=7+√10
Step-by-step explanation:
−5(x−7)2+30=−20
Step 1: Simplify both sides of the equation.
−5x2+70x−215=−20
Step 2: Subtract -20 from both sides.
−5x2+70x−215−(−20)=−20−(−20)
−5x2+70x−195=0
For this equation: a=-5, b=70, c=-195
−5x2+70x+−195=0
Step 3: Use quadratic formula with a=-5, b=70, c=-195.
x=
−b±√b2−4ac
2a
x=
−(70)±√(70)2−4(−5)(−195)
2(−5)
x=
−70±√1000
−10
x=7−√10 or x=7+√10
Answer:
the answer should be 0.25
formula for slope is m=(y2-y1)/(x2-x1)
therefore m=(-42-(-60))/(60-(-12))
(-42+60)/(60+12)
18/72
simplify
1/4
further simplify
0.25 should be the final answer
19x + rx = -37x + w
Add 37x on both sides
19x + rx + 37x = w
Factor out the x
x(19 + r + 37) = w
You can simplify this to:
x(56 + r) = w
Divide (56 + r) on both sides to get x by itself
x = 
A=17 cm
you would need to find the volume of the shape! (:
Answer:
J. 19.7
Step-by-step explanation:
SOH<em>(</em><em>sine = </em><em>opposite side/hypotenuse)</em> CAH TOA
sin 80° = RS/20
=> 0.985 = RS/20
=> RS = 20 × 0.985 = 19.7
