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
nordsb [41]
3 years ago
9

the length of a rectangle is four times its width. the rectangle has an area of 1024cm^2 work out the width of the rectangle

Mathematics
2 answers:
olga2289 [7]3 years ago
7 0
The width is 16 so the length is 64  (TO clarify W=16)

Hope this helps :)
Papessa [141]3 years ago
6 0

Answer:

Area of a rectangle is given by:

A = lw            ....[1]

where

l is the length

w is the width of the rectangle respectively.

As per the statement:

the length of a rectangle is four times its width.

⇒l = 4w

It is also given that: area of rectangle is 1024 cm square

Substitute the given values in [1] we have;

1024=(4w)w

⇒1024=4w^2

Divide both sides by 4 we have;

256 = w^2

or

w^2 =256

Taking square root both sides we have;

w = \sqrt{256} = 16 cm

Therefore, the width of the rectangle is, 16 cm

You might be interested in
Sue is thinking of buying some 2-liter sodas which are on sale for $1.25 each. The total cost, c, ofall the 2-liter sodas will b
4vir4ik [10]
Ways to get 2$ is easy just multiply
3 0
3 years ago
Evaluate |x + y|, for x = 8 and y = -15.<br><br> 7<br> -7<br> 23<br> -23
natka813 [3]

Answer:

7

Step-by-step explanation:

When evaluating absolute values, a great way to remember what they do is simple. No matter the number, whether it is negative or positive, the number(s) IN THE absolute values are ALWAYS positive.

So, |x + y| is then substituted with the numbers given for the variables.

|x + y|

|8 - 15|

|-7|

7

Hope this helps!

3 0
2 years ago
A box contains four 75 W lightbulbs, three 60 W lightbulbs, and three burned-out lightbulbs. Two bulbs are selected at random fr
Law Incorporation [45]

Answer:

a. 0.689

b. 0.8

c. 0.427

Step-by-step explanation:

The given scenario indicates hyper-geometric experiment because because successive trials are dependent and probability of success changes on each trial.

The probability mass function for hyper-geometric distribution is

P(X=x)=kCx(N-k)C(n-x)/NCn

where N=4+3+3=10

n=2

k=4

a.

P(X>0)=1-P(X=0)

The probability mass function for hyper-geometric distribution is

P(X=x)=kCx(N-k)C(n-x)/NCn

P(X=0)=4C0(6C2)/10C2=15/45=0.311

P(X>0)=1-P(X=0)=1-0.311=0.689

P(X>0)=0.689

b.

The mean of hyper-geometric distribution is

μx=nk/N

μx=2*4/10=8/10=0.8

c.

The variance of hyper-geometric distribution is

σx²=nk(N-k).(N-n)/N²(N-1)

σx²=2*4(10-4).(10-2)/10²*9

σx²=8*6*8/900=384/900=0.427

6 0
2 years ago
A person selecting a bank should consider the services they need. True False
In-s [12.5K]
True you have different types of interest rates and stuff like that
5 0
3 years ago
What is 78% of 10,000 ????????
cricket20 [7]

The answer to your question is:

7800

7 0
3 years ago
Read 2 more answers
Other questions:
  • When is an expression undefined? give an example.
    8·1 answer
  • What is the value of x in the equation 1/3x-2/3=-18?
    11·2 answers
  • Kelso sold digital cameras on her website. She bought the cameras for $65 each and included 60% markup to get the selling price.
    14·1 answer
  • Select the correct answer.
    11·1 answer
  • Can someone help me I will mark BRAINLIESt for the rest of my questionS!
    11·2 answers
  • There were 20 boys and 26 girls in a chess club last year. This year the number of boys increased by 30% but the number of girls
    13·1 answer
  • Needddddd helpppppp asapppp/ Necesitoooo ayudaaaaa rapidooo
    14·1 answer
  • 50 POINTS! The fifth term of an arithmetic sequence is 11 and the tenth term is 41. What is the first term?
    11·2 answers
  • Tom earns $3200 a month. He pays $950 to rent an apartment. What percent of Tom’s income does he pay
    7·2 answers
  • Elizabeth lives in San Francisco and works in Mountain View. In the morning, she has 3 transportation options (take a bus, a cab
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!