Subtract 8.263 from 13.48.
A)5.217
B)5.783
C)21.743
D)6.815

Answers

Answer 1

Answer: 13.48-8.263=5.217 just use a calculator i mean it helps

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Suppose that w and t vary inversely and that t = 5/12 when w= 4. Write a function that models the inverse
variation and find t when w = 5.
A. T=5/12w; 5/12
B.t=5/3w;1/3
C.t=5/48w;5/192
D.t=5/12w;1/3

Answers

Answer:

Option B. t=5/3w ;1/3

Step-by-step explanation:

We are told that $w$ varies Inversely with $t$ thus generally speaking $w$ ∝ $(1)/(t)$ since they are inverted, otherwise if they were proportionally varied then $w$ ∝ $t$ . This means that there is a constant value ( $a$ ) for which $w$ is inversely proportional to $t$ and can be mathematically expressed as:

$w=(a)/(t)$ Eqn. (1)

Now since we are given the values of $w=4$ and $t=(5)/(12)$ , we can plug them in Eqn. (1) and find our constant of proportionality $a$ as follow:

$w=(a)/(t)\n \na=wt\n\na=(4)((5)/(12) )\n\na=(5)/(3)$

Now that we have our constant we can find the new $t$ value for the second value of $w=5$ as follow:

$w=(a)/(t) \n\nt=(a)/(w)\n \nt=((5)/(3) )/(5)\n\nt=(5)/(15)\n \nt=(1)/(3)\n$

Therefore based on the options give, we can see that Option B. is correct since

$t=(5)/(3w)$ and for $w=5$ , then $t=(1)/(3)$

Andrew has a cell phone plan that provides 300 free minutes each month for a flat rate of $19. For any minutes over 300, Andrew is charged $0.39 per minute. Which of the following piecewise functions represents charges based on Andrew's cell phone plan?

Answers

Answer:

$f(x)=\left\{\begin{array}{l}19,\ \ x\le 300\n \n19+0.39(x-300),\ \ x>300\end{array}\right.$

Step-by-step explanation:

Andrew has a cell phone plan that provides 300 free minutes each month for a flat rate of $19. For any minutes over 300, Andrew is charged $0.39 per minute.

Let x be the number of minutes Andrew uses per month and f(x) be the charges based on Andrew's cell phone plan.

If $x\le 300,$ then $f(x)=19.$

If $x>300,$ then first 300 minutes are free and each minute of next (x-300) minutes costs $0.39, therefore

$f(x)=19+0.39(x-300).$

Hence,

$f(x)=\left\{\begin{array}{l}19,\ \ x\le 300\n \n19+0.39(x-300),\ \ x>300\end{array}\right.$

Answer:

19, x≤ 300

19+.39(x-300), x>300

Step-by-step explanation:

I just did this quiz

What is the solution to the linear equation? 6k+10.5=3k+12

Answers

Answer:

$k=0.5$

Step-by-step explanation:

Given: The linear equation $6k+10.5=3k+12$ .

To find: The solution of the linear equation.

Solution: The given linear equation is:

$6k+10.5=3k+12$

Rewriting the like terms, we get

$6k-3k=12-10.5$

Solving the above equation, we have

⇒ $3k=1.5$

⇒ $k=(1.5)/(3)$

⇒ $k=0.5$

which is the required solution to the linear equation.

the answer is k=0.5 hope it helps

Is 4,400 is 10 times as much as 440

Answers

to do question we have to multiply 10 and 440: ("x times as much" is x Multiplied by", so "twice as much as 4 is 8", or "3 times 4 is 12),

this is 4400 or 4,400 - this is true!

How many feet is 96 inches

Answers

1 foot = 12 inches

96 inches divided by 12 inches equals 8 feet

96 inches = 8 feet

first you divide 96 by 12 and then that should be your answer or use a calculator

Alice works at a health care facility. She has measured the hemoglobin levels of 200 people. The data follows a normal distribution with a mean of 14 g/dL and a standard deviation of 1. From the given data, we can conclude that about people have hemoglobin levels less than 13, and about people have hemoglobin levels greater than 14.

Answers

Since the data follows a normal distribution, the 68-95-97 rule can be used to describe the number of people falling under N standard deviations from the mean. Since the standard deviation is 1, hemoglobin levels of 13 -15 g/dL contains 68% of the sample, or 136 people. This means the 32 people have less than 13 g/dL and 32 people have more than 15 g/dL.

Answer:

Step-by-step explanation:

took the test and got it right

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