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Stells [14]
3 years ago
14

A bag contains 5 red cubes and 7 white cubes. Celinda will select one cube, put it in her pocket, and then select a second cube.

Which expression gives the probability that she will select two red cubes? A. B. C. D.
Mathematics
2 answers:
SashulF [63]3 years ago
5 0

Answer:

Idnu

Step-by-step explanation:

Len [333]3 years ago
4 0
The number of ways of picking up a red cube out of 12 cubes are 5/12. Number of ways of picking up a second red cube is 4/11. 
<span>Thus probability of picking up 2 red cubes = 5/12 * 4/11 = 20/121. 

20 / 121 = .165 or .17

So the probability of Celinda getting two red cubes is .17.</span>
You might be interested in
Help please i really need it
Vsevolod [243]

Problem 1

Answer: x = 9

----------

Explanation:

For now focus on triangle DEF. We need to find the missing angle D.

D+E+F = 180

D+71+42 = 180

D+113 = 180

D = 180-113

D = 67

In order for DE to be parallel to GH, the alternate interior angles EDF and GHF must be congruent

Let's see what happens when we force them to be equal

angle EDF = angle GHF

67 = 5x+22

67-22 = 5x

45 = 5x

5x = 45

x = 45/5

x = 9

==========================================

Problem 2

Answers:

Converse: "if it is winter, then it is snowing"

Inverse: "If it is not snowing, then it is not winter"

Contrapositive: "If it is not winter, then it is not snowing"

----------

Explanation:

The original conditional is in the form "If P, then Q". The P and Q are placeholders for logical statements.

We then have the following forms

  • converse = "if Q, then P" (swap P and Q)
  • inverse = "If not P, then not Q" (negate each)
  • contrapositive = "If not Q, then not P" (do both inverse and converse operations)

==========================================

Problem 3

Answer: choice B) "If the sum of two angles is not 180 degrees, then they aren't supplementary"

----------

Explanation:

Refer to problem 2 for the general form of the inverse. We negate each of the P and Q to get our final answer.

==========================================

Problem 4

Answer: Choice C) "If I do not need an umbrella, then it is not raining"

----------

Explanation:

Refer to problem 2 for the general form of the contrapositive. We swap P and Q, and negate each.

==========================================

Problem 5

Answer: Choice A) "If two lines have opposite slopes, then they are perpendicular"

----------

Explanation:

Refer to problem 2 for the general form of the converse. We swap the positions of P and Q.

4 0
3 years ago
Question Content Area
kap26 [50]

b. Total fixed cost are $49885

<h3>What is fixed cost of product ?</h3>

Sometimes production of a product may increase or decrease, but the cost which do not change with the change of output is called fixed cost of the product.

<h3>What is the total fixed cost ?</h3>

Highest monthly total cost = $83800

Highest monthly production units = 3500 desks

Lowest monthly total cost = $61900

Lowset monthly production units = 1240 desks

So, variable cost per unit = (Highest cost-lower cost)/(highest production units-lowest production units)

= ($83800-$61900)/(3500-1240)

= $21900/2260

= $9.7

∴ Total fixed costs=Highest monthly total cost-(highest production units×variable cost per unit)

= $83800-(3500×$9.7)

= $83800-$33950

= $49850

Nearest value is $49885, whch is the correct one.

Learn more about fixed cost here:

brainly.com/question/27328807

#SPJ10

3 0
2 years ago
What is the are of this triangle? ( Look at the photo)
Eva8 [605]

Answer:

9 x 4 = 36 divided by 2 = 18

3 0
3 years ago
The diameter of a circle is 6ft. Find it’s area to the nearest tenth
prisoha [69]

Answer:

The area of the circle is 113.0 ft²

Step-by-step explanation:

To solve this problem we need to use the area formula of a circle:

a = area

r = radius = 6ft

π = 3.14

a = π * r²

we replace with the known values

a = π * (6ft)²

a = π * 36ft²

a = 113.04ft²

The area of the circle is 113.04ft²

round to the nearest tenth

a = 113.04ft²  = 113.0 ft²

8 0
3 years ago
Show your work for the right answer
Degger [83]

Answer:

= a^7

Step-by-step explanation:

Given in the question,

a^5 * a^4 / a²

To find,

show working

<h3>Explanation</h3>

As we know that to divide exponents (or powers) with the same base, we subtract the exponents. Division is the opposite of multiplication, so when multiplying the exponents (or powers) with the same base add the exponents.

<h3>Working</h3>

a^5 * a^4 / a²

= a^(5 + 4) / a²  (Multiplying)

= a^9 / a²

= a^(9 - 2)          (Dividing)

= a^7  

<em>hence shown</em>

8 0
3 years ago
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