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
elixir [45]
3 years ago
13

I need help with this urgent

Mathematics
1 answer:
Gnom [1K]3 years ago
7 0
I can’t see anything
You might be interested in
1. Find a. The length of side
RideAnS [48]
Are you good at math
5 0
3 years ago
Kyra wants to make the area of her rectangular closet 9 times larger than the size it currently is. What scale factor should she
romanna [79]

Answer:

choice 3) scale factor of 3

Step-by-step explanation:

3 times length + 3 times width = 9 times area

5 0
3 years ago
A stereo store is offering a special price on a complete set ofcomponents (receiver, compact disc player, speakers, cassette dec
Korvikt [17]

Answer:

Step-by-step explanation:

(a)

The number of receivers is 5.

The number of CD players is 4.

The number of speakers is 3.

The number of cassettes is 4.

Select one receiver out of 5 receivers in 5C_1 ways.

Select one CD player out of 4 CD players in 4C_1 ways.

Select one speaker out of 3 speakers in 3C_1 ways.

Select one cassette out of 4 cassettes in 4C_1 ways.

Find the number of ways can one component of each type be selected.

By the multiplication rule, the number of possible ways can one component of each type be selected is,

The number of ways can one component of each type be selected is

=5C_1*4C_1*3C_1*4C_1\\\\=5*4*3*4\\\\=240

Part a

Therefore, the number of possible ways can one component of each type be selected is 240.

(b)

The number of Sony receivers is 1.

The number of Sony CD players is 1.

The number of speakers is 3.

The number of cassettes is 4.

Select one Sony receiver out of 1 Sony receivers in ways.

Select one Sony CD player out of 1 Sony CD players in ways.

Select one speaker out of 3 speakers in ways.

Select one cassette out of 4 cassettes in 4C_1 ways.

Find the number of ways can components be selected if both the receiver and the CD player are to be Sony.

By the multiplication rule, the number of possible ways can components be selected if both the receiver and the CD player are to be Sony is,

Number of ways can one components of each type be selected

=1C_1*1C_1*3C_1*4C_1\\\\=1*1*3*4\\\\=12

Therefore, the number of possible ways can components be selected if both the receiver and the CD player are to be Sony is 12.

(c)

The number of receivers without Sony is 4.

The number of CD players without Sony is 3.

The number of speakers without Sony is 3.

The number of cassettes without Sony is 3.

Select one receiver out of 4 receivers in 4C_1 ways.

Select one CD player out of 3 CD players in 3C_1 ways.

Select one speaker out of 3 speakers in 3C_1 ways.

Select one cassette out of 3 cassettes in 3C_1 ways.

Find the number of ways can components be selected if none is to be Sony.

By the multiplication rule, the number of ways can components be selected if none is to be Sony is,

=4C_1*3C_1*3C_1*3C_1\\\\=108

[excluding sony from each of the component]

Therefore, the number of ways can components be selected if none is to be Sony is 108.

(d)

The number of ways can a selection be made if at least one Sony component is to be included is,

= Total possible selections -Total possible selections without Sony

= 240-108

= 132  

Therefore, the number of ways can a selection be made if at least one Sony component is to be included is 132.

(e)

If someone flips the switches on the selection in a completely random fashion, the probability that the system selected contains at least one Sony component is,

= \text {Total possible selections with at least one Sony} /\text {Total possible selections}

= 132  / 240

= 0.55

The probability that the system selected contains exactly one Sony component is,

= \text {Total possible selections with exactly one Sony} /\text {Total possible selections}\frac{1C_1*3C_1*3C_1*3C_1+4C_11C_13C_13C_1+4C_13C_13C_13C_1}{240} \\\\=\frac{99}{240} \\\\=0.4125

Therefore, if someone flips the switches on the selection in a completely random fashion, then is the probability that the system selected contains at least one Sony component is 0.55.

If someone flips the switches on the selection in a completely random fashion, then is the probability that the system selected contains exactly one Sony component is 0.4125.

6 0
3 years ago
Please help me worth a bunch of points 26 points
Romashka [77]
9hrs on sleep
6hrs on school
1.6 hrs on job
2.4 hrs on homework
1.92 hrs on meals
4.08hrs on entertainment



3 0
3 years ago
Read 2 more answers
Jerome hiked three fourths of a mile in two thirds of an hour. How many miles can Jerome hike in one hour?
KatRina [158]

Answer: 1.125 miles

Step-by-step explanation:

2/3 hour___3/4 miles

1 hour___X= 1.125 miles

(1*3/4)/(2/3) = 1.125

7 0
3 years ago
Other questions:
  • Can someone help me with these math problems
    10·2 answers
  • I need help and thank u
    5·1 answer
  • Average Monthly Temperature Month Temperature January 45 degrees February 42 degrees March 54 degrees April 62 degrees May 78 de
    8·1 answer
  • Categorize each of the following physical quantities as either a vector or a scalar quantity:
    7·1 answer
  • Ben and Sam are diving in a lake at 14 feet below the surface been spot Sam 9 feet directly below him find sams depth
    15·2 answers
  • Wich equation gives the number of 1/3 inches that are in 5/6 inches
    5·1 answer
  • The population of a town is 4,951 people. what is the value of the digit 4 in the number? answer
    14·2 answers
  • What is the answer from the picture
    15·1 answer
  • Olivia is making scarves. Each scarf will have 7 rectangles, and 6 7 of the rectangles will be purple. How many purple rectangle
    8·1 answer
  • PLZ HELP 50 POINTS The graph shows that rate is proportional to time. Point W represents a rate of 0.8 pound of potato chips mad
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!