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andriy [413]
3 years ago
12

100 this time lol sorry about last time

Mathematics
2 answers:
I am Lyosha [343]3 years ago
5 0

Answer:

1. 1

2. 40

3. 36

Step-by-step explanation:

brainliest?

saul85 [17]3 years ago
5 0

Answer:

minus 1 four

40-4

36

Step-by-step explanation:

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The function f(t) = 4t2 − 8t + 6 shows the height from the ground f(t), in meters, of a roller coaster car at different times t.
gregori [183]

Answer:

The correct option is 3.

Step-by-step explanation:

The vertex form of a parabola is

f(x)=a(x-h)^2+k            .... (1)

where a, h, and k are integers, and interpret the vertex of f(t). (h,k) is the vertex of the parabola.

The given function is

f(x)=4t^2-8t+6

It can be written as

f(x)=4(t^2-2t)+6

If an expression is defined as x^2+bx, then we need to add (\frac{b}{2})^2 to make it perfect square.

In the expression t^2-2t the value of b is -2. So, we nned to add and subtract (\frac{-2}{2})^2 in the parenthesis.

f(x)=4(t^2-2t+1^2-1^2)+6

f(x)=4(t^2-2t+1)+4(-1)+6

f(x)=4(t-1)^2-4+6

f(x)=4(t-1)^2+2                .... (2)

The vertex form of the parabola is f(x)=4(t-1)^2+2.

From (1) and (2), we get h=1 and k=2. It means the vertex of the parabola is (1,2). Vertex of upward parabola is point of minima. So the  minimum height of the roller coaster is 2 meters from the ground.

Therefore the correct option is 3.

4 0
3 years ago
You get GPS units from two manufacturers, A and B. You get 43% of your units from A and 57% of your units from B. In the past, 2
defon

Answer:

0.5015 = 50.15% probability that it came from manufacturer A.

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

P(B|A) = \frac{P(A \cap B)}{P(A)}

In which

P(B|A) is the probability of event B happening, given that A happened.

P(A \cap B) is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Defective

Event B: From manufacturer A.

Probability a unit is defective:

2% of 43%(from manufacturer A)

1.5% of 57%(from manufacturer B). So

P(A) = 0.02*0.43 + 0.015*0.57 = 0.01715

Probability a unit is defective and from manufacturer A:

2% of 43%. So

P(A \cap B) = 0.02*0.43 = 0.0086

What is the probability that it came from manufacturer A?

P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.0086}{0.01715} = 0.5015

0.5015 = 50.15% probability that it came from manufacturer A.

4 0
3 years ago
Dana is finding the perimeter of different-sized squares.
abruzzese [7]

Answer:

the answer is 4x

Step-by-step explanation:

5 0
3 years ago
Two parallel lines are crossed by a transversal. What is the value of y?
Mice21 [21]
If I where to take a guess, it would be B since the lines are exactly the same.
5 0
3 years ago
Read 2 more answers
4th grade math patterns 18250, 18500, 19000, 20000 what's the next number?
irinina [24]

22000

The number that's being added in the sequence increases by 2x.

250 * 2 = 500, which is added to 18500 to equal 19000.

500 * 2 = 1000, which is added to 19000 to equal 20000.

1000 * 2 = 2000, which added to 20000 equals 22000.

6 0
4 years ago
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