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
Verdich [7]
3 years ago
5

In a bag of keys, there are 12 silver keys, 5 black keys, 11 copper keys, and 2 painted keys of various colors. One key is drawn

out at random. What is the probability that the key that is drawn is silver or copper?
Mathematics
1 answer:
umka2103 [35]3 years ago
7 0
The total number of keys equals:
12 + 5 + 11 + 2 = 30 keys

The probability to pick a sliver key is:
12/30 = 2/5

The probability to pick a copper key is:
11/30

Hope that helps
You might be interested in
A plane is flying from Albuquerque new Mexico to Austin Texas so far it has flown 161 miles or 23% of the total distance of the
Karo-lina-s [1.5K]

Answer: 700 miles.

Step-by-step explanation:

1. You know that 23% of the total distance of the flight from Albuquerque New Mexico to Austin Texas is 161 miles.

2. Then, keeping that information on mind, you can calculate the total distance of the flight (which you call x) as following:

\frac{161miles}{23\%}=\frac{x}{100\%}

Solve for x. Then, you obtain that the result is:

x=\frac{161miles*100\%}{23\%}\\x=700miles

3 0
3 years ago
To evaluate 43/2 find A) the square of 4 and then take the cube root. B) the cube of 4 and then take the square root. C) the squ
tatiyna

Answer:

  B) the cube of 4 and then take the square root

Step-by-step explanation:

43/2 = 21.5

___

The answer choices suggest you want ...

  4^(3/2) . . . . . . . appropriate math symbols are very helpful

This can be evaluated several ways:

  4^{\frac{3}{2}}=\sqrt{4^3}=(\sqrt{4})^3=10^{\frac{3}{2}\log{4}}\\\\=8

_____

Since the 3 is in the numerator of the fraction, it represents a cube, not a cube root. Any of the answer choices suggesting cube root is involved are incorrect. (Eliminating those leaves only the correct answer choice.)

4 0
3 years ago
Solve 1/2n x (n+1) =78
Leya [2.2K]

Answer:

n=-13, n=12

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
PLEASE DO NOT BE NONSENSE​
gayaneshka [121]
7. 18.3 divided by 4 is 4.575. 4.575 is closest to 4.5 which would be our answer

8. 14.6 divided by 3 is 4.86. If we round it, then it would be 5 which would be the answer

10. The answer to the problem would be 11.58
6 0
2 years ago
Read 2 more answers
Which of the following is the equation of the line that is parallel to y=35x+8 y = 3 5 x + 8 and goes through point (-10,4)?
xeze [42]

Slope-intercept form of a line is y=mx+b.

Where m= slope and b= y-intercept.

First step is to compare the given equation y=35x+8 with the above equation to get the value of m.

After comparing the two equations we will get m=35.

Slope of paralle lines always equal which means slope of a line which is parallel to the above line will also be 35.

Now the line is passing through (-10,4).

Point slope form of a line is :

y-y_{1} =m(x-x_{1} )

Next step is to plug in m=35, x1=-10 and y1=4 in the above equation. So,

y-4=35(x-(-10)

y-4=35(x+10)

y-4=35x+350

y=35x+350+4

y=35x+354.

So, the equation of the line is y=35x+354.

4 0
3 years ago
Other questions:
  • Log 10,000 = ?<br><br><br>This is such a stupid question, sorry lol
    12·2 answers
  • NEED HELP ASAP !!!! PLEASE EXPLAIN !!!! I JUST NEED HELP WITH PART B !!!
    6·1 answer
  • The total amount paid on a 35 year loan was $98,000. If the interest rate was 4.1% and compounded monthly, what was the principa
    9·2 answers
  • I really need help with number nine
    14·2 answers
  • Approximately how many degrees are in the measure of an interior angle of a regular seven side polygon
    11·1 answer
  • A rectangular poster is three times as it is wide. A rectangular banner is five times as long as it is wide. But the banner in t
    5·1 answer
  • What method is best to solve each equation?
    5·1 answer
  • How many solutions does each equation have?
    6·1 answer
  • Solve for y- 6y-1.5x=8
    14·1 answer
  • Shelly has a gift card for her favorite restaurant for $15. She wants to treat a group of her friends to sandwiches at the resta
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!