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
rewona [7]
3 years ago
14

From a deck of 52 cards, two cards are radomly drawn without replacement. Which expression represents the probability of drawing

two hearts?
A. 2/52
B. 13/52· 13/51
C. 13/52· 12/51
D. 13/52· 13/52
Mathematics
1 answer:
tatuchka [14]3 years ago
6 0
There are 13 hearts in a standard deck of 52 cards.

So the probability of picking a heart is 13/52.

The probability of picking another card and not replacing the heart we drew will be 12/51, because we are short on 1 heart.

So the expression is:

13/52 * 12/51
You might be interested in
A student raises her grade average from a 75 to a 90. what was the percent of increase in the student's grade average? round you
Leona [35]
Here are some formulas...
percent increase = (new number - original number) / original number...* 100
percent decrease = (original number - new number) / original number...* 100
============
a student raises her grade from a 75 to a 90....since it is going from a smaller number to a larger number, u have an increase
percent increase = (90 - 75) / 70....* 100
                           =   15/70   * 100
                           = 0.2142 * 100
                           = 21.42 rounds to 21.4%  increase
-------------------------
36.50 on sale for 32.12...since it goes from a larger number to a smaller number, u have a decrease
percent decrease = (original number - new number) / original * 100
                             = (36.50 - 32.12) / 32.12...* 100
                             = 4.38 / 32.12...* 100
                             = 0.1363...* 100
                             = 13.63 rounds to 13.6% decrease
------------------------------
23.5 to 21.2......this is a decrease
percent decrease = (original number - new number) / original...* 100
                            = (23.5 - 21.2) / 23.5....* 100
                            = 2.3 / 23.5....* 100
                            = 0.0979 * 100
                            = 9.79 rounds to 9.8% decrease






3 0
3 years ago
Read 2 more answers
Landon bought 4 pounds of walnuts for $10.92. What is the constant of proportionality that relates the cost in dollars, y, to th
Lunna [17]

Step-by-step explanation:

The constant of proportionality is the ratio of the cost to the number of pounds of walnuts.  In other words, it is the price of one pound of walnuts.

$10.92 / 4 lb = $2.73 / lb

6 0
3 years ago
A business uses straight-line depreciation to determine the value y of an automobile over a 5-year period. Suppose the original
Elena-2011 [213]

For this problem. it is found that:

a) The automobile has depreciated 75% in 5 years.

b) The value of the automobile was reduced by $10,500 in five years.

c) The linear function is: s(t) = 14,500 - 2,100t.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = ax + b

In which:

  • a is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

From the problem, we have that:

a) The automobile has depreciated 75% in 5 years, as 4000/14500 = 0.25, and 100% - 25% = 75%.

b) The value of the automobile was reduced by $10,500 in five years, as 14500 - 4000 = $10,500.

For the linear function, we have that:

  • The initial value is b = 14500.
  • The slope is of a = -10500/5 = -2100.

Hence the linear function is: s(t) = 14,500 - 2,100t.

More can be learned about linear functions at brainly.com/question/24808124

#SPJ1

6 0
1 year ago
Find 3 consecutive odd integers whose sum is 225, explain please
aleksklad [387]
3 odd integers have a property that they average up to the middle large one. Let's say we have 3, 5, and 7. 3 is 2 less than 5 and 7 is 2 more than 5. so when you add them it equals 2 times 5. 
After we know that, the sum of 3 odd integers is just 3 times the middle number. ex. 3+5+7 = 3 times 5 = 15
Then we know the some number times three = 225. we find out that the middle number is 75, so the other two are 73 and 77
5 0
3 years ago
Simplify (-7/8)(-3/4).<br> O 6/7<br> o 2132<br> 0-2132
Andrews [41]

(-7/8)(-3/4)

multiply the numerators together

(-7)(-3)=21

multiply the denominators together

(-8)(-4)=32

answer:

21/32

7 0
3 years ago
Read 2 more answers
Other questions:
  • The goal of this problem is to use the definition of the derivative to find ah + b where a and b are constants. find these const
    10·1 answer
  • Can someone please help me with this question
    11·2 answers
  • Use the product propety for radicals to simplify the following radical expressions as much as possible √500 =
    12·1 answer
  • 5x - 2y = 21
    13·1 answer
  • What’s an equation of a line that’s perpendicular to 4x-16y=-8 and passes through the point (-3,3)
    7·2 answers
  • What is the sum of the interior angles of the pentagon
    15·1 answer
  • X/6.4=4 solve for X it’s for pre al 8th grade
    13·1 answer
  • Find the area:<br> look at pic
    6·1 answer
  • Which bulb would be better to use on the factory floor
    11·1 answer
  • In a right triangle, cosine a = 0.352 and sine a = 0.936. what is the approximate value of tangent a? 0.329 0.376 1.288 2.659
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!