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3 years ago

Can someone help me with this please

Mathematics

1 answer:

MrRa [10]3 years ago

5 0

You first have to convert the 5 tons to pounds.
Once you have done that step you simply add.

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In 2013, the Pew Research Foundation reported that "45% of U.S. adults report that they live with one or more chronic conditions

marshall27 [118]

<h2>Answer with explanation:</h2>

Formula to find the confidence interval for population proportion (p) is given by :-

$\hat{p}\pm z^* SE$

, where z* = Critical value.

$\hat{p}$ = Sample proportion.

SE= Standard error.

Let p be the true population proportionof U.S. adults who live with one or more chronic conditions.

As per given , we have

$\hat{p}=0.45$

SE=0.012

By z-table , the critical value for 95% confidence interval : z* = 1.96

Now , a 95% confidence interval for the proportion of U.S. adults who live with one or more chronic conditions.:

$0.45\pm (1.96) (0.012)$

$0.45\pm (0.02352)$

$=(0.45-0.02352,\ 0.45+0.02352)=(0.42648,\ 0.47352)$

Hence, a 95% confidence interval for the proportion of U.S. adults who live with one or more chronic conditions. $=(0.42648,\ 0.47352)$

Interpretation : Pew Research Foundation can be 95% confident that the true population proportion (p) of U.S. adults who live with one or more chronic conditions lies between 0.42648 and 0.47352 .

4 0

3 years ago

Daniel is a walmart he got a hoverboard for 100 dollars he pay with 250 dollars how much money did he get back

igor_vitrenko [27]

250-100=150 dollars in change

7 0

3 years ago

A grasshopper jumps straight up from the ground with an initial vertical velocity of 8 feet per second. After how many seconds w

vlabodo [156]

Answer:

Problem 1 : After 0.25 s

Problem 2 : The squirrel doesn't reach the ground before the nut

Step-by-step explanation:

Problem 1

This is a standard physics problem

The equation that defines the movement of the grasshopper given the initial velocity, and the acceleration is the following

Distance = Do + Vo*t + 0.5*a*t^2

Where

Do is the initial distance.

(Do = 0, because the grasshopper is on the ground and we choose the reference system there)

Vo is the initial velocity = 8 feet/sec

a is the acceleration that is exerted on the body (in this case a = g = -9.8 m/s^2 = - 32.174 feet per second per second.)

t is the time

We substitute in the equation, and solve for t (time)

Distance = Do + Vo*t + 0.5*a*t^2

(1 foot)= (0)+ (8 feet/s)*t + 0.5*(-32.174 feet/s^2)*t^2

Solving this equation, we get that

t = 0.25 s

Problem 2

This problem is similar to the previous one

We apply the same formula

D = Do + Vo*t + 0.5*a*t^2

But in this case, we are going in the opposite direction, and we have an initial distance.

Do = 27 feet

Vo is the initial velocity of the nut = -6 feet/s

D = 0 (Ground)

We substitute in the equation, and solve for t (time)

(0) = (27) + (-6 feet/s)*t + 0.5*(-32 feet/s^2)*t^2

t = 1.125 s < 2s

The nut reaches ground in 1.125 s, so the squirrel doesn't reach the ground before the nut

4 0

3 years ago

Fill in the table using the graph.

Makovka662 [10]

Find an x value and f(x) is just it's y value. we can start with x=0

when x=0 y= -3

when x= 2 y= -2

and so on, choose easy to read numbers.

you can finish the rest, let me know if you wanna check your answers or if you are stuck.

8 0

4 years ago

Read 2 more answers

PLS HELP ASAP

slega [8]

Answer:

rn or later?

Step-by-step explanation:

6 0

3 years ago