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2 years ago

11

Lower bound is 18, upper bound is 28. what is the point estimate of the population mean

2 answers:

MrRissso [65]2 years ago

8 0

23 is a good estimate of the mean

hichkok12 [17]2 years ago

7 0

23 is the mean estimate

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(5xexponent-2)exponent3

Assoli18 [71]

Multiply the two exponents together.

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2 years ago

The chart shows the cost of 2 new vehicle. Which digit in the trucks price is one tenth of the value of that same digit in the c

Dafna11 [192]

It's the 8.
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2 years ago

The equation y 4.9t 2 3.5t 2.4 relates the height y in meters to the elapsed time t in seconds for a ball thrown downward at 3.5

tamaranim1 [39]

Answer:

$t \approx 0.43\,s$

Step-by-step explanation:

The vertical displacement function is $y(t) = -4.9\cdot t^{2}-3.5\cdot t + 2.4$ , where $y(t)$ is measured in meters and $t$ in seconds. Ball hits the ground when $y(t) = 0$ . That is:

$-4.9\cdot t^{2}-3.5\cdot t + 2.4 = 0$

Whose roots can be found by using the General Formula for Second-Order Polynomials:

$t_{1,2} = \frac{3.5\pm \sqrt{(-3.5)^{2}-4\cdot (-4.9)\cdot (2.4)} }{2\cdot (-4.9)}$

Solutions of this polynomial are:

$t_{1} \approx 0.43\,s,t_{2} \approx -1.14\,s$

Only the first root is physically consistent.

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2 years ago

There were 8 finalists in the Atlantic County spelling bee and 12 finalists in the Ocean County spelling bee. If one finalist fr

wolverine [178]

I think it is A
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2 years ago

Read 2 more answers

What is the mass in kilograms of a 100-lb person on earth ?

maksim [4K]

The answer would be 45.3592 killograms

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2 years ago