the member increased their elevation 290 feet during their hike this morning. now they are at an elevation of 450 feet
1 answer:
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Greetings!
"<span>Six times a number increased by 20 is four less than eight times the number. Find the number."...
This would be, as an equation:
</span>
Solve:
Add 4 and -6x to both sides.
Simplify.
Divide both sides by 2.
Simplify.
<span>
x=12
Hope this helps.
-Benjamin
</span>
"<span>Six times a number increased by 20 is four less than eight times the number. Find the number."...
This would be, as an equation:
</span>
Solve:
Add 4 and -6x to both sides.
Simplify.
Divide both sides by 2.
Simplify.
<span>
x=12
Hope this helps.
-Benjamin
</span>
Answer:
(0 , -a²)
Step-by-step explanation:
tangent at x = a and x = -a
y = x² (a , a²) and (-a , a²) must be on the curve and tangent to curve
gradient dy/dx = 2x
slope (m) at x = a is <u>2a</u> and slope (m') at x=-a is<u> -2a</u>
line1: (y - a²) / (x - a) = 2a
y - a² = 2a (x - a) y = 2ax - a² ... (1)
line2: (y - a²) / (x + a) = - 2a y = -2ax- a² ... (2)
(1) - (2): 4ax = 0 a≠0 x = 0
y = - a²
I wish I did it right, or ....
