Find −14(−45) . Write your answer as a fraction in simplest form

4.20. According to a report released by the National Center for Health Statistics, 51% of U.S. households has only cell phones (

Sergeu [11.5K]

Answer:

The probability that the household has only cell phones and has high-speed Internet is 0.408

Step-by-step explanation:

Let A be the event that represents U.S. households has only cell phones

Let B be the event that represents U.S. households have high-speed Internet.

We are given that 51% of U.S. households has only cell phones

P(A)=0.51

We are given that 70% of the U.S. households have high-speed Internet.

P(B)=0.7

We are given that U.S. households having only cell phones, 80% have high-speed Internet. A U.S household is randomly selected.

P(B|A)=0.8

$\frac{P(A\capB)}{P(A)}=0.8\\P(A\capB)=0.8 \times P(A)\\P(A\capB)=0.8 \times 0.51\\P(A\capB)=0.408$

Hence the probability that the household has only cell phones and has high-speed Internet is 0.408

7 0

3 years ago

What is not right?? HELP PLS

liubo4ka [24]

Answer:

its supposed to be 120 degrees because the angle picture thingy looks like its an obtuse angle and too big to be 60 degrees

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

I HAVE A MATH TEST PLZ HELP I'M GIVING OUT 50 POINTS PLZ S.O.S I HAVE MATH

Nady [450]

Answer:

Graph included as picture

Step-by-step explanation:

To solve this, plot the given points on the graph

Draw a line through them.

Now select two of those values and we'll find the rate of change.

We'll be using (1,-1) and (3,3)

To find rate of change we will be using the formula: $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

$y_{2} = 3\\y_{1} =-1\\x_{2} = 3\\x_{1} = 1$

$\frac{3-(-1)}{3-1} = \frac{4}{2} = 2$

So the rate of change is 2

You will use this rate of change for your other function because they both have the same rate of change

Since we have the rate of change, we can create the slope intercept form formula: y = mx +b

Just substitute for the variables we know

m = rate of change/slope = 2

b = y-intercept = -3

y = 2x + -3

[If you connected all the points in your graph, that's how you found the y-intercept]

Now we have to create the formula for the second function.

We know it will have that same slope of 2

so we have y = 2x + b

To solve for b we can plug in the values we do have which would be (x,y) of (3,6)

6 = 2(3) + b

Now solve

6 = 6 + b

6 (-6) = 6 (-6) + b

0 = b

b = 0

This mean that the y-intercept will be on (0,0)

Plot that point

Now we finish the formula

y = 2x + 0

Connect the dots, make sure the line continues on both of them past the dots and now you have your graph!

I've included a picture of the graph for your reference. I hope this helps, don't be afraid to reach out with further questions!

4 0

3 years ago

Sabre uses the LIFO method of valuing inventory. On October 31, they sold 175 shredders. Find the cost of goods sold. Enter your

Tamiku [17]

Answer: The cost of goods sold= 5881.75

Step-by-step explanation:

Cost of available goods = 75x32.97 + 75x33.78 + 150x35.02= $10259.25

Units available= 150 + 75 + 75= 300

Sold units= 175

Ending inventory= 300-175=125

Value of ending inventory= 125x35.02= $4377.5

Cost of goods sold= cost of available goods – value of ending inventory

Cost of goods sold= 10259.25 – 4377.5= $5881.75

7 0

3 years ago

Read 2 more answers

Turn 20/12 into a mixed number

luda_lava [24]

Answer:

1 2/3

Step-by-step explanation:

well first reduce it which would be 5/3 since the greatest common denominator would be 4. Then put 3 in the 5 which goes only once and 2 is left over. Keep the threeas the denominator instead of the numerator.

3 0

3 years ago