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babunello [35]
3 years ago
5

The number of known elements changed very rapidly over a 150-year period.

Mathematics
1 answer:
dimaraw [331]3 years ago
6 0

Answer:

118

Step-by-step explanation:

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4. A bag contains five red marbles, two orange marbles, one yellow marble, and two green marbles. Two marbles are drawn from the
Vitek1552 [10]

Answer:

  • C. 0.08889

Step-by-step explanation:

<u>Total number of marbles:</u>

  • 5 + 2 + 1 + 2 = 10

<u>There are two possibilities</u>

  • Orange then green or green the orange

<u>The probabilities are:</u>

  • P(o&g) = 2/10*2/9 = 2/45
  • P(g&o) =2/10*2/9 = 2/45

<u>Required probability is:</u>

  • P = 2/45*2 = 4/45 =  0.08889

Correct choice is C

4 0
3 years ago
Suppose that 18 inches of wire costs 72 cents.
frozen [14]
Kdtoddtocludlyflyfoyfoydlfylfol
4 0
3 years ago
What's the error? Jerry says that a cube with edges that measure 10 cm has a volume that is twice as much as a cube with sides t
disa [49]
The quick way to dispute something like this is to simply do the calculation and then create a ratio. 

Cube One (Large Cube)
The formula for a cube is V = e^3 
e = the measurement of an edge. In this case.
e = 10 cm
V = e^3
V = 10^3 = 10*10*10
V = 1000 cm^3

Cube 2 (Small Cube)
V = e^3
e = 5 cm
V = 5*5*5
V = 125 cm^3

Ratio
Large Cube / Small Cube = 1000 / 125 = 8/1.

The difference in size is 8 to 1 not 2 to 1.

Explanation
He's right if he sticks to one side. The ratio of one side of the large cube to the small one is 2 to 1. But once you put that into the formula for volume, three sides are multiplied together and that 2 shows up everytime you multiply the sides together. 

4 0
4 years ago
Triangle ABC is shown below.
zhannawk [14.2K]

Answer:

b

Step-by-step explanation:

3 0
4 years ago
Read 2 more answers
In June, it rained 6 out of the 30 days. What decimal is equivalent to the fraction of days in June that it rained?
zepelin [54]

Answer:

.30

Step-by-step explanation:

because rounded up it would equal 30 days

3 0
3 years ago
Read 2 more answers
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