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Korvikt [17]
3 years ago
15

Help me please ): I'm stuck here I don't remember how to do this .----.

Mathematics
1 answer:
inessss [21]3 years ago
8 0
The last number would be 86 , TRUST ME I know these stuff!!
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Find all the polynomials f (t ) of degree ≤ 2 [of the form f (t) = a + bt + ct2] whose graphs run through the points (1, 3) and
Ugo [173]

Answer:

f(t) = 4 - 3t + 2t^2

Step-by-step explanation:

Given:

f(t) = a + bt + ct^2

Differentiate w.r.t. "t"

f'(t) = b + 2ct

1) f(1) = 3

a + b +c = 3...........1)

2) f(2) = 6

a + 2b + 4c = 6.........2)

3) f'(1) = 1

b + 2c = 1 ...............3)

Solving above three simultaneous equations:

a = 4

b = -3

c = 2

Therefore equation becomes:

f(t) = 4 + (-3)t + (2)t^2

3 0
3 years ago
We want to do a taste test comparing the flavor of two new zero calorie colas, "Cola Zero" and "The Null Cola." We had 25 people
Grace [21]

Answer:

No, there is not a significant difference

Step-by-step explanation:

The sample mean (1.3) is less than the sample standard deviation (1.9). The sample mean would have to be greater than 1.9 for there to be a significant difference

8 0
4 years ago
Match each trigonometric function with its Unit Circle definition. Note that Angle A is correctly oriented for the Unit Circle d
PtichkaEL [24]
The first diagram below shows a circle with a radius of 1 (unit circle). The circle is drawn on a Cartesian graph with (0,0) as the center of the circle.

From the second diagram, we can determine the value of sin(Θ) = y
and cos(Θ) = x

We can further deduce that
tan(Θ) = \frac{y}{x}
sec(Θ) = \frac{1}{cos(Θ)} = \frac{1}{x}
cosec(Θ) = \frac{1}{sin(Θ)} = \frac{1}{y}
cot(Θ) = \frac{cos(Θ)}{sin(Θ)} = \frac{x}{y}

4 0
3 years ago
Read 2 more answers
mandy is on a bus that is traveling at a constant speed of 60 miles per hour how far will she travel in 3 1/2
tekilochka [14]
3 and a half hours i assume. so, 60 times 3 is 180, then divide by 2 to get your half, which is 30 now add that to 180. You have 210. She will travel 210 miles in 3 and a half hours. :)
4 0
3 years ago
8x-7y-(3-6y)<br> Simplify each expression
castortr0y [4]
8x - 7y - (3 - 6y) =
8x - 7y - 3 + 6y =
8x - y - 3
7 0
4 years ago
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