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3 years ago

You randomly select four cards from a normal deck of 52 cards

Mathematics

2 answers:

bazaltina [42]3 years ago

7 0

Answer: The answer is 0.077

Step-by-step explanation:

Katen [24]3 years ago

5 0

Answer:

.019

Step-by-step explanation:

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What is the median for 252,210,264,278,208,295,248,257,284,271....expressed to the nearest tenth.

babymother [125]

Answer:

260.5

Step-by-step explanation:

7 0

3 years ago

Given the figure below, which statement correctly completes the following? ABE and HCD are what type of angles

velikii [3]

Angles are classified based on their measures.

<u>Classification of angles</u>

The following are the classification of angles

Acute Angles
Right Angles
Obtuse Angles
Straight lines
Reflex Angles

The smallest angle is 0 degrees and the largest is 360 degrees.

When the measure of an angle is less than 90 degrees, such angle is an acute angle

When the measure of an angle is exactly 90 degrees, such angle is a right angle

Angles greater than 90 degrees, but less than 180 degree are obtuse angles, while angles that measure exactly 180 degrees are straight lines.

The last type of angle is the reflex angle, and it has a measure between 180 degrees and 360 degrees (exclusive)

<em>The question is incomplete, so I gave a general explanation</em>

Read more about angles at:

brainly.com/question/17972372

3 0

2 years ago

Pls help asap $$$$$$$$$$$$$

Bond [772]

Answer:

84 couples

Step-by-step explanation:

First add the number of couples that have only one spouse that prefers dramas.

23+39+37+27=126

126 couples out of 250 prefer dramas.

126/250=.56 or 56 percent

To find the answer by making a prediction based on this data, you would find 56% of 150.

150x.56=84 out of the additional 150 surveyed couples will have one spouse that prefers a drama.

8 0

2 years ago

A tank has capacity 6 L and initially contains 11 mg of salt dissolved in 3 L of water. A solution containing 1 mg/L of salt ent

BlackZzzverrR [31]

Answer:

The answer is below

Step-by-step explanation:

a) The maximum capacity of he tank is 6 L and initially it contains 11 mg of salt dissolved in 3 L of water. Solution enters the tank at a rate of 3 L/hr, therefore in x hours, the amount of water that have entered the tank = 3x.

Solution also leaves the tank at a rate of 2L/hr, therefore in x hours, the amount of water that have left the tank = 2x

Hence the amount of water present in the tank at x hours is given as:

3 + 3x - 2x = 3 + x

The time taken to full the tank can be gotten from:

3 + x = 6

x = 6 - 3

x = 3 hr

$\frac{dQ}{dx}=3-\frac{2Q}{3+x}\\ \\\frac{dQ}{dx}+\frac{2Q}{3+x}=3\\\\let\ u'=\frac{2u}{3+x}\\\\\frac{u'}{u}=\frac{2Q}{3+x}\\\\ln(u)=2ln(3+x)\\\\u=(3+x)^2\\\\(3+x)^2Q]'=3(3+x)^2\\\\(3+x)^2Q=(3+x)^3+c\\\\Q(0)=11\\\\(3+0)^2(11)=(3+0)^3+c\\\\x=72\\\\Q=x+3+\frac{72}{(x+3)^2}\\ \\Q(3)=3+3+\frac{72}{(3+3)^2}=8\ mg$

8 mg/ 6 L = 4/3 mg/L

8 0

2 years ago

-8<2x-4<4 solve the inequality

il63 [147K]

Answer:

Step-by-step explanation:

The inequality will be split into two

It is know that, if a<b<c

Then a<b and b<c

-8<2x-4<4

Apply that to this

Then,

-8<2x-4. Equation 1

Also,

2x-4<4 equation 2

Solving equation 1

-8<2x-4

Add 4 to both side of the equation

-8+4<2x-4+4

-4<2x

Divide both sides by 2

-4/2<2x/2

-2<x

Note, if a is less than b, then, b is greater than a, e.g. 4 is less than 10, this implies 10 is greater than 4

Therefore,

-2<x

Then, x greater than -2

Equation 2

2x-4<4

Add 4 to both side of the inequalities

2x-4+4<4+4

2x<8

Divide both side by 2

Then,

2x/2<8/2

x<4

Therefore x is between -2 and +4.

Check attachment for graphical solution

7 0

2 years ago