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
pshichka [43]
2 years ago
7

The length of a rectangle is three times its width. One way to write an expression to find the perimeter would be

Mathematics
1 answer:
navik [9.2K]2 years ago
5 0
It could be written as 8w the simplified version of the example.

Or you could write it as 2(3w + w) which is 2 time the length and width.
You might be interested in
How many ways are there to choose a committee of 7 people from a group of 10 people?7201208405040?
lyudmila [28]

Answer: 120

---------------------------------------------------------------------------------------

Explanation:

We have seven slots to fill. Let's call the slots A, B, C, D, E, F, G

There are 10 choices for slot A

There are 9 choices for slot B

There are 8 choices for slot C

There are 7 choices for slot D

There are 6 choices for slot E

There are 5 choices for slot F

There are 4 choices for slot G

We count down because each previous slot reduces the pool to choose from. Multiply those values out: 10*9*8*7*6*5*4 = 604800

Now divide that result by 5040. Why 5040? Because this is the number of ways to arrange 7 people within a single grouping. Note how 7! = 7*6*5*4*3*2*1 = 5040. W're dividing because order does not matter for any committee.

So we have 604800/5040 = 120 which is the answer we want

---------------

Side note: We could use the alternate route of the nCr combination formula

nCr = (n!)/(r!*(n-r)!)

where n = 10 and r = 7


5 0
3 years ago
A textile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 ki
shepuryov [24]

Answer

given,

mean = 12 Kg

standard deviation = 0.5 Kg

assume the observed statistic is = 11.1

 now, \bar{X}=11.1 , \mu = 12 , \sigma = 0.5

assuming the number of sample = 4

n = 4

Hypothesis test:

H₀ : μ≥ 12

Ha : μ < 12

now,

significant level α = 0.05

z* = \dfrac{\bar{X}-\mu}{\dfrac{\sigma}{\sqrt{n}}}

z* = \dfrac{11.1-12}{\dfrac{0.5}{\sqrt{4}}}

     z* = -3.60

Test statistics, Z* = -3.60

P-value

P(Z<-3.60) = 0.002 (from z- table)

P- value = 0.002

now,

reject the value of H₀ when P-value < α

    0.002 < 0.05

since, it is less P-value < α , we have to reject the null hypothesis

5 0
3 years ago
Rewrite (120 + 20) using factoring.
solong [7]

5(24+4) Also 20(6+1)...................

5 0
1 year ago
Read 2 more answers
F(x)=square root 5x+7, g(x)= square root 5x-7 Find (f+g)(x)
o-na [289]

Answer: sqrt of 5x+7+ sqrt of 5x-7

Step-by-step explanation:

5 0
3 years ago
Help quick! i will give you 20 points. You have 412 pints of ice cream for your birthday party. If you are going to serve 34 pin
coldgirl [10]

Division word problems often ask you to split something evenly. You should solve this problem by dividing the total amount of ice cream by the amount you will serve each guest. After converting to fractions, 4.5 divided by .75. You will have enough to serve six guests, and no ice cream left over.

5 0
3 years ago
Other questions:
  • F(x)=x^2. What is g(x)? <br>A. g(x)=1/4x^2<br>B. g(x)=1/2x^2<br>C. g(x)=(1/2x)^2<br>D. g(x)=2x^2
    7·1 answer
  • Please help due tomorrow
    5·1 answer
  • X-2/x+1 &gt; 0, what si da solution set?
    11·2 answers
  • 2 1 /4 meters by 1 7 /8
    9·1 answer
  • Supoose y varies directly with x. If y=6 when x=-2, find x when y=15
    15·1 answer
  • What is the answer of this ratio What's the equivalent number :24 and 5:3 ??? <br><br> help!!
    13·1 answer
  • Is 0.3 and 1/3 equivalent?
    11·1 answer
  • Find the area of the shape below.<br> 10 cm<br> 27 cm<br> 9 cm<br> 24 cm
    7·2 answers
  • Can someone help me with this problem
    8·1 answer
  • Harper invested $3,200 in an account paying an interest rate of 7% compounded continuously. Assuming no deposits or withdrawals
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!