1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
julsineya [31]
3 years ago
6

2. A stone is an English measure of weight. There are 14 lb in 1 stone and 2.2 lb in 1 kg. A certain person weighs 9 stone. (a)

If you wanted to convert the person’s weight to kilograms, what conversion factor should you use? Show your work. (b) What is the person’s weight in kilograms?
Mathematics
2 answers:
Tasya [4]3 years ago
7 0
Multiply the person's weight (9 stone) by the conversion factors (14 lb / 1 stone) and (1 kg / 2.2 lb).  Please show your work.
GenaCL600 [577]3 years ago
6 0

Answer:

Step-by-step explanation:

Multiply the person's weight (9 stone) by the conversion factors (14 lb / 1 stone) and (1 kg / 2.2 lb).  Please show your work.

You might be interested in
20 people each bring 3 food dishes to an awards banquet. The dishes are shared equally by 180 people at the banquet. How many pe
kherson [118]

Answer:

3 people

Step-by-step explanation:

If 20 people each bring 3 food dishes to an awards banquet, the total amount of food brought will be (20 * 3) = 60foods

If the dishes are shared equally by 180 people at the banquet, then;

60foods = 180 people

1 food = x

Cross multiply

60* x = 180

60x = 180

x =180/60

x = 3

Hence 3 people will share 1 dish

4 0
2 years ago
The quantity, Q, of a drug in the blood stream begins with 250 mg and decays to one-fifth its value over every 90 minute period.
Mazyrski [523]

Answer:

a=250 \, mg\\\\b=5\\\\T= 90'

Step-by-step explanation:

We have that Q(t) = a\cdot b^{-\frac{t}{T}} \\

Where t is the time (in minutes) and for the sake of dimensional consistency, let's assume that T is also in minutes, b is an adimensional number, and a is in mg.  So we will have Q in mg as a consequence.

We now want to find out what values these constants might take. Let's see what happens when t=0, that is, just as we start. At that point, we have that the amount of drug in the bloodstream must be equal to 250mg, thus:

Q(0)= a\cdot b ^{-\frac{0}{T} }=250\,mg\\Q(0)= a=250\,mg

We have found the constant a! It is the initial amount of drug! we have made use of the fact that any number raised to the 0th power is equal to one.

Now, we know that every 90 minutes, the amount of drug decreases to one fifth of its former value. How do we put this in mathematical form? Like so:

Q(t+90')=Q(t)/5

That is, 90 minutes after time t the amount of drug will be one fifth of the amount of drug at time t. Let's expand the last equation:

Q(t+90')=Q(t)/5\\\\a\cdot b^{-\frac{t+90'}{T} }=a\cdot b^{-\frac{t}{T} }/5\\\\ b^{-\frac{t+90'}{T} }=b^{-\frac{t}{T} }/5\\\\b^{-\frac{t}{T} }b^{-\frac{90'}{T} }=b^{-\frac{t}{T} }/5\\\\b^{-\frac{90'}{T} }=\frac{1}{5}

Now the last expression isn't enough to determine both T and b, but that also means that we have some freedom in how we choose them. What seems most simple is to pick T=90' and thus we will get:

b^{-1 }=\frac{1}{5}\\\\\frac{1}{b}= \frac{1}{5}\\\\b=5

And that is our final result.

3 0
3 years ago
Find the x-intercept and y-intercept of the line.
castortr0y [4]
The y intercept is when x = 0   so it is:-

8(0) + y = 8
0 + y = 8

y = 6 <-------  y-interdept

x intercept is when y = 0 so:-
8x + 0 = 8

x  = 1 <-------- x intercept


8 0
3 years ago
Read 2 more answers
What is the simplified form of the equation 4/5n - 1/5 = 2/5n ?
Gnoma [55]

we are given

\frac{4}{5}n -\frac{1}{5} =\frac{2}{5}n

Firstly , we will multiply both sides by 5

5*\frac{4}{5}n -5*\frac{1}{5} =5*\frac{2}{5}n

now, we can simplify it

4n-1 =2n

2n =1

now, we can solve for n

n =\frac{1}{2}.............Answer

8 0
3 years ago
Which statement is true for the equation 4n – 3 = 4n – 2 Select one: a. It has no solution. b. It has one solution. c. It has tw
oksian1 [2.3K]
4n-3=4n-2  subtract 4n from both sides

-3=-2 

Since -3!=-2, there is no solution.

So your answer is a.
7 0
3 years ago
Read 2 more answers
Other questions:
  • Help please I need to get it done today​
    15·2 answers
  • Very Easy Question 2/3 divided by 5.
    9·1 answer
  • Write an equation that is parallel to the line y = 3x - 5 and passes through the point (-1, 2)
    7·1 answer
  • What is the slope of the line that passes through the points (3,-2) and (9,-2)?
    5·2 answers
  • Write 32/12 as a mixed number. Give your answer in its simplest form.
    7·2 answers
  • PLEASE HELP WILL GIVE BRAINLIEST
    15·1 answer
  • NEED HELP ASAP!! Find the measure of the missing angle X
    8·1 answer
  • 7. How many solutions does the given system have?
    14·2 answers
  • How did the 5 become 15/4... kinda confuse can anybody help????????????
    7·1 answer
  • A music-streaming service charges $9 per month for a single user. Additional users within the same household can be added for $3
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!