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
Rom4ik [11]
3 years ago
6

Answer choices:

Mathematics
1 answer:
pychu [463]3 years ago
4 0

Answer:

B. 15

Step-by-step explanation:

<em>The chances of </em><em>randomly</em><em> </em><em>selecting</em><em> </em><em>keys</em><em> </em><em>for</em><em> </em><em>a</em><em> </em><em>sports</em><em> </em><em>car</em><em> </em><em>or</em><em> </em><em>convertible</em><em> </em><em>is</em><em> </em><em>5</em><em>/</em><em>4</em><em>0</em><em> </em><em>since</em><em> </em><em>there</em><em> </em><em>are</em><em> </em><em>a</em><em> </em><em>total</em><em> </em><em>of</em><em> </em><em>5</em><em> </em><em>sports</em><em> </em><em>and</em><em> </em><em>convertible</em><em> </em><em>car</em><em> </em><em>keys</em><em> </em><em>and</em><em> </em><em>a</em><em> </em><em>total</em><em> </em><em>of</em><em> </em><em>4</em><em>0</em><em> </em><em>keys</em><em> </em><em>overall</em><em>.</em><em> </em><em>We</em><em> </em><em>then</em><em> </em><em>multiply</em><em> </em><em>that</em><em> </em><em>5</em><em>/</em><em>4</em><em>0</em><em> </em><em>by</em><em> </em><em>1</em><em>2</em><em>0</em><em> </em><em>because</em><em> </em><em>Sam</em><em> </em><em>randomly</em><em> </em><em>selects</em><em> </em><em>a</em><em> </em><em>key</em><em> </em><em>1</em><em>2</em><em>0</em><em> </em><em>times</em><em>.</em><em> </em>

5/40 × 120 = 15

You might be interested in
An engine that’s being tested is coupled to a dynamometer that has a radius arm of 1.70 feet. The test data shows a speed of 5,0
Veseljchak [2.6K]
The brake horsepower of an engine that’s being tested is coupled to a dynamometer that has a radius arm of 1.70 feet is letter D. 170.
7 0
3 years ago
Read 2 more answers
. Find the value of $1,300 invested at 4.2% interest compounded continuously for 5 years, 9 months. Round your final answer to t
BARSIC [14]
The formula we use for continuous compounding is A=Pe ^{rt} where P is the initial amount invested, r is the rate as a decimal, and t is time in years.  Our P = 1300, our r = .042, and our t = 5.75 (9 months is 3/4 of a year, and 3/4 in a decimal is .75).  Putting all that into our formula we have A=1300(2.718) ^{(.042)(5.75)}.  We have to multiply those 2 powers together and then raise euler's number to it, then multiply by 1300.  Doing all of that, we get the amount at the end to be $1,655.10
5 0
3 years ago
Si "m" es el lado mayor de un triángulo, dos cuyos ángulos interiores miden 30° y 60°, entonces el perímetro del triángulo es
lions [1.4K]

Answer:

perimetro = \dfrac{(3 + \sqrt{3})m}{2}

Step-by-step explanation:

triángulo 30°-60°-90°

1~:~\sqrt{3}~:~2

1m~:~m\sqrt{3}~:~2m

\dfrac{m}{2}~:~\dfrac{m\sqrt{3}}{2}~:~m

perimetro = \dfrac{m}{2} + \dfrac{m\sqrt{3}}{2} + m

perimetro = \dfrac{m}{2} + \dfrac{m\sqrt{3}}{2} + \dfrac{2m}{2}

perimetro = \dfrac{m + m\sqrt{3} + 2m}{2}

perimetro = \dfrac{3m + m\sqrt{3}}{2}

perimetro = \dfrac{(3 + \sqrt{3})m}{2}

7 0
3 years ago
Find the empirical formula of the compound containing 2.4 gram of carbon, 6.4 gram of oxygen and 0.2 gram of hydrogen ​
Usimov [2.4K]

Answer:

Empirical formula= COOH

Step-by-step explanation:

Molecular mass of the elements

Carbon= 12

Oxygen= 16

Hydrogen= 1

We divide the elements each with their molecular formula

Carbon= 2.4/12

Carbon= 0.2

Oxygen= 6.4/16

Oxygen= 0.4

Hydrogen= 0.2/1

Hydrogen= 0.2

Now we divide with the smallest result which is 0.2

Carbon= 0.2/0.2

Carbon = 1

Oxygen= 0.4/0.2

Oxygen= 2

Hydrogen= 0.2/0.2

Hydrogen= 1

So we have

Carbon 1, oxygen 2, hydrogen 1

Empirical formula= COOH

4 0
3 years ago
The leading brand of cosmetics in the US had about 20% of the total sales in the industry. The total sales were $ 200,000. What
Elanso [62]

Answer: $40000

Step-by-step explanation:

200000(0.2) = $40000

8 0
2 years ago
Other questions:
  • Can someone help me, it due by Friday pls
    14·1 answer
  • in the diagram below ,R is located at (24,0) , N is located at (12,18) , T is located at (12,6) , and E is located at (18,15) .
    14·1 answer
  • 15. Preliminary plans are underway for construction of a new stadium for a major league base ball team. City officials question
    5·1 answer
  • What is the inverse operation of multiplication?
    7·2 answers
  • What is the answer ?
    8·1 answer
  • What are the intercepts of the graph of the equation 6 x − 1 . 5 y = 18?
    7·1 answer
  • in thier last game the schook football team scored an equal numbwr of points in each of the first 3 quaters then 14 in the fouth
    6·1 answer
  • You randomly selected one card from a 52-card desk. Find the probability of selecting a black nine or black three
    11·1 answer
  • Solve: 2y + 7 = 11<br><br>PLS HELP ASAP​
    9·1 answer
  • Please help<br> y∝1/√x If y=5<br> when x=36 find,<br> x when y=3
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!