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Anastaziya [24]
3 years ago
14

You pick a marble from this bag. What is the probability you will choose either a plain black or plain white marble? Simplify yo

ur answer.
Mathematics
1 answer:
exis [7]3 years ago
5 0

Answer:

50% chance for both

Step-by-step explanation:

If its two marbles then you have a 50% chance of picking up either the black or white. If four marbles are in the bag it would be 25%, if 10 then you have 10% and so on.

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Write each fraction as a percent!!~!!<br><br> 7/20<br><br><br> 3/5
grin007 [14]

Answer:

35%

60%

Step-by-step explanation:

7/20= 35% .  7 divided by 20 equals .35

3/5=60%       3 divided by 5 equals .6

4 0
3 years ago
Suppose that you are to make a rectangular box with a square base from two different materials. The material for the top and fou
saw5 [17]

Answer:

height = 14.5 ft

width = length = 3.2 ft

Step-by-step explanation:

Let the side of the square base is a and the height of the box is h.

The material required to make the box is equal to the total surface area of the box.

Area of base = a²

Cost of square base is $ 2 per ft²

So, the cost of making base = 2a²

Area of four walls + area of top = 2 (a² + ah + ah) + a² =  3a² + 2ah

Cost of making walls and the top is $ 1 per ft²

So, the cost of making walls and the top = 1 x ( 3a² + 2ah)

Total cost of making the box = 2a² + 3a² + 2ah = 5a² + 2ah

According to the question

144 = 5a² + 2ah

h = \frac{144-5a^{2}}{2a}     .... (1)

The volume of the box is V = length x width x height

V = a x a x h

V = 72 a - 2.5 a³     from equation (1)

Differentiate both sides with respect to a.

dV/da = 72 - 7.5 a²

Put, it equal to zero for maxima and minima

7.5 a² = 72

a = 3.2 ft

Put in equation (1)

h = \frac{144-5\times 3.2\times 3.2}{2\times 3.2}

h = 14.5 ft

So, the dimensions of the box are

height = 14.5 ft

width = length = 3.2 ft

6 0
3 years ago
What is the least common denominator (LCD) of 1/3 and 3/4
Len [333]
D. because 3 and 4 don't both go into any other number besides 12, they don't go into 3, 4 or 7, so its 12.
6 0
3 years ago
Read 2 more answers
A bicycle has a listed price of $660.95 before tax. If the sales tax rate is 7.25%, find the total cost of the bicycle with sale
skelet666 [1.2K]

9514 1404 393

Answer:

  $708.87

Step-by-step explanation:

The price with tax included is ...

  660.95 + 0.0725×660.95 = 660.95(1 +0.0725) = 708.87

The total cost of the bicycle with tax is $708.87.

8 0
2 years ago
Read 2 more answers
HELP PLEASE 14 POINTS
hram777 [196]

Answer:

To my knowledge of congruency, I would say the answer is A,

Step-by-step explanation:

Hope this helped!!!

8 0
2 years ago
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