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Nastasia [14]
3 years ago
14

If there are three noncollinear points there is always one plane?

Mathematics
1 answer:
guajiro [1.7K]3 years ago
4 0

Answer:

Yes I believe there is.

Step-by-step explanation:

:)

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An item is priced at $13.76. If the sales tax is 7%, what does the item cost including sales tax?HURRY
elixir [45]
How To Solve It:

$13.76 x 0.07 = $0.96

$13.76 + $0.96 = $14.72

Answer:

$14.72

I hope this helps! :)
6 0
3 years ago
A group of employees is stranded on top of a 120 feet building because a fire occurred. Your goal is to throw a rope from a 60 f
Paul [167]

Step-by-step explanation:

-16t² + 64t + 60 = 120

this is a quadratic equation, and its points of f(t) = 0 can be calculated. there are usual 2 such solutions for a quadratic equation.

so, we need to bring it to a form that ends in "= 0".

-16t² + 64t - 60 = 0

that is also the same as

-4t² + 16t - 15 = 0

the formula for the solutions of such a quadratic equation is

x = (-b ± sqrt(b² - 4ac))/(2a)

a = -4

b = 16

c = -15

so,

t = (-16 ± sqrt(256 - 4×-4×-15))/(2×-4) =

= (-16 ± sqrt(256 - 240))/-8 =

= (-16 ± sqrt(16))/-8 = (-16 ± 4)/-8

t1 = (-16 + 4)/-8 = -12/-8 = 3/2

t2 = (-16 - 4)/-8 = -20/-8 = 5/2

so, it depends on what the unit of time t is. let's assume seconds.

therefore, the rope will reach the top of the building while going up after 3/2 = 1 1/2 = 1.5 seconds.

and then, as the shot rope makes a curve and comes back down again (that is why we have 2 solutions : the rope will reach the height of 120ft during its flight path twice : once while still going up, and once when coming back down again) it will be at the height of the top of the building after 5/2 = 2 1/2 = 2.5 seconds.

so, it depends if the people there can grab it at the first chance, and if the path of the rope would allow them to grab it also again on its way back down. this we don't know.

I therefore guess, that your teacher is aiming for the first solution.

4 0
3 years ago
What is b divided by b% of b? PLS HELP
34kurt

Answer:

b / (b/100×b)

= b / (b/50

= 50b/b

= 50

Step-by-step explanation:

brainliest plz

5 0
2 years ago
Read 2 more answers
Help me with this geometey question !! thanks!​
Reptile [31]

Answer:

A=542

Step-by-step explanation:

none, sorry

6 0
3 years ago
Read 2 more answers
Which pony lies on the line described by the equation below? y + 4 = 4 ( x - 3)
CaHeK987 [17]
(3, -4) is on the line because the equation is point-slope equation where the point (x1, y1) is;
y - y1 = m(x- x1)
5 0
3 years ago
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