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
sweet-ann [11.9K]
2 years ago
8

A teacher surveyed her class about their online accounts and wanted to know if they had “Fb” accounts or if they had “Snap ” acc

ounts. The Venn diagram shows her results. If a person from the class is randomly selected, what is the probability that the person has a “Fb” account but not a “Snap” account
a)1/5
b)16/25
c)7/25
d)18/25

Mathematics
1 answer:
avanturin [10]2 years ago
8 0

Answer:

a) 1/5

Step-by-step explanation:

There are 25 students total in the class.

If you look at the Venn Diagram, you can see that only 5 people have only "Fb" accounts.

Therefore, the probability that the person has a “Fb” account but not a “Snap” account is 5/25 or 1/5.

You might be interested in
the length of the shadow of a pole on level ground increases by 90m when the angle of elevation of the sun changes from 58 degre
Mama L [17]

Step-by-step explanation:

(A) Let a triangle be formed with height of pole h, length of base b and angle of elevation 58°. (Due to lack of a figure).

Tan 58° = h / b = 1.6

(B) Let another triangle be formed with height of pole h, length of base (b + 90) and angle of elevation 36°. (Due to lack of a figure).

Tan 36° = h / (b + 90) = 0.72

(C) <u>Simplifying the two equations</u> :

1.6b = 0.72b + 64.8

b = 64.8 / 0.88 = 73.6 m

h (height of pole) = 1.6 * 73.6 = 117.76 m

4 0
3 years ago
Write and solve the equation for the following situation:
tamaranim1 [39]

Answer:

B.) x + (x + 16) = 90

2x+16=90

2x=90-16

x=74/2

x=37

8 0
3 years ago
Read 2 more answers
Arlene had 1/3 as many goldfish as Isabelle. Isabelle has 5 times as many goldfish as Bruce. If Bruce had 18 goldfish, how many
kvv77 [185]

Answer: 30 goldfish

Step-by-step explanation: Bruce has 18 goldfish. If Isabelle has 5 times as many goldfish as Bruce she will have 18*5=90 goldfish. If Arlene has 1/3 times as many goldfish as Isabelle she will have 90/3=30 goldfish.

7 0
2 years ago
"if the standard deviation of a group of 20 scores is 15, what is the variance?"
DerKrebs [107]

We have been given that the standard deviation of a group of 20 scores is 15 and we are asked to find variance.

Since we know variance is square of standard deviation. In order to find out the variance of the given data we have to take the square of 15.

\text{ Variance}=\sigma^{2}\\&#10;=15^{2}=225

Therefore, our variance is 225.


7 0
2 years ago
Write an algebraic expression<br><br><br>The quotient the of 72 divided by o =
Alchen [17]

72 ÷ o should be the algebraic expression.

4 0
3 years ago
Other questions:
  • Can I please get some help?? Use the diagram and the given information to find the unknown length.
    9·1 answer
  • Trigonometric problems.<br><br> Could someone help me with this? I’m confused.
    13·1 answer
  • Joanna set a goal to drink more water daily. The number of ounces of water she drank each of the last seven days is shown below.
    9·1 answer
  • Plz help this is due today i would have done it myself but i totally forgot about these so PLZ HELP AND NO LINKS AND NO GROSS PI
    9·2 answers
  • Solve for x, find the simplified radical &amp; decimal
    15·1 answer
  • Write an equation to represent how the diameter and radius are related.​
    8·1 answer
  • PLEASE HELP ITS DUE REALLY SOON AND IM REALLY DESPERATE JUST ANSWER ANY QUESTION THAT YOU CAN AND PLS TELL ME WHICH ONE IT WAS.
    10·2 answers
  • P = (x &lt; x &lt;5)<br>List the element of this set given​
    9·1 answer
  • The price of a pair of shoes increases from $61 to $76. What is the percent increase to the nearest percent?
    10·2 answers
  • The radius of a circle is 3cm. What is the area of the circle? Use 3.14 for pie.​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!