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3 years ago

Two times a number minus six is eight less than

1 answer:

5 0

Idk how to do this but if you use socratic you can take a picture of the question and it usually comes up with an answer

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In an article about the cost of health care, USA Today reported that a visit to a hospital emergency room has a mean cost of $14

Misha Larkins [42]

Answer: 0.8461

Step-by-step explanation:

Given : $\mu=144\ \ ; \sigma=392$

Let x be the random variable that represents the cost for the hospital emergency room visit.

We assume that cost for the hospital emergency room visit is normally distributed .

z-score for x=1000 ,

$z=\dfrac{1000-1400}{392}\approx-1.02\ \ \ [\because z=\dfrac{x-\mu}{\sigma}]$

Using z-value table , we have

P-value =P(x>1000)=P(z>-1.02)=1-P(z≤ -1.02)=1-0.1538642

=0.8461358≈0.8461 [Rounded nearest 4 decimal places]

Hence, the probability that the cost will be more than $1000 = 0.8461

3 0

3 years ago

-3 (3) (-1)<br> i need help

Law Incorporation [45]

Answer: -3 x 3= -9 x -1= 9

Step-by-step explanation: So, you need to times -3 with 3 and you should get -9 then, times -9 with -1 and you get 9.

6 0

3 years ago

A large drink casts 50 cents more than a small drink. Write an expression for the total costs of small drinks and 3 large drinks

Alexeev081 [22]

Large drinks=l small drinks=s c=total cost

c=s +3l

idk how many small drinks u have, buy if u have more than one it'll be 2s, 3s, 4s, etc

5 0

3 years ago

Read 2 more answers

Becky wants to fence in a rectangular play area for her dog. If she wants the length of the play area to be 9 feet longer than h

Anni [7]

Answer:

Length= (0.5x+9) ft

Width= (x) ft

Step-by-step explanation:

Let the width be represented by x and since the length is 9 feet longer than half its width it means half the width is 0.5x plus 9 feet. Therefore, the dimensions are as follows

Length= (0.5x+9) ft

Width= (x) ft

5 0

4 years ago

The cost in dollars, y, of a large pizza with x toppings from Pat’s Pizzeria can be modeled by a linear function. A large pizza

Lisa [10]

Answer: b. $22.75

Step-by-step explanation:

Given : A large pizza with no toppings costs $14.00. A large pizza with 2 toppings costs $17.50.

Let x denotes the number of toppings and y be the cost of that pizza.

Then, $y=mx+c$ , m= cost per topping and c= cost of pizza without any topping.

From the given information.

c= $14

Function of cost becomes = $y=mx+14$

For x= 2 and y= 17.50, we have

$17.50=m(2)+14$

tex]3.50=m(2)[/tex] [Subtract 14 from both sides]

$m=\$ 1.75$ [Divide both sides by 2]

For c= 14 and m =1.75 , our function becomes.

$y=1.75x+14$

Now, for x= 5

$y=1.75(5)+14=8.75+14=22.75$

Hence, the cost of a pizza with 5 toppings = $22.75

5 0

4 years ago

Read 2 more answers