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bagirrra123 [75]
3 years ago
13

Casey wants to determine whether the rate at which melted glass cools affects the strength of the glass. He pours melted glass i

nto a form and cools the glass at different rates. Then, he tests the breaking strength of each form. Which of the following is the test variable in this experiment?
A. type of glass
B. strength of the glass
C. thickness of the glass
D. cooling rate of glass

Help if you know and are sure!
Mathematics
1 answer:
Ivenika [448]3 years ago
5 0
Answer is B
test variable is what you measure
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Answer:

√245

Step-by-step explanation:

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A peculiar six-sided die has uneven faces. In particular, the faces showing 1 or 6 are 1 × 1.5 inches, the faces showing 2 or 5
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Answer:

0.2216

Step-by-step explanation:

The probability of a particular face coming up is proportional to its area.

Hence, we first calculate the areas.

For 1 or 6, area = 1 × 1.5 = 1.5 in²

For 2 or 5, area = 1 × 0.4 = 0.4 in²

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Probability of a 1 showing up = 1.5/5 = 0.30

Probability of a 2 showing up = 0.4/5 = 0.08

Probability of a 3 showing up = 0.6/5 = 0.12

Probability of a 4 showing up = 0.6/5 = 0.12

Probability of a 5 showing up = 0.4/5 = 0.08

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Probability of doubles with the die is a sum of the probabilities of all the possible doubles with the die.

Probability of a 1 double = 0.3 × 0.3 = 0.09

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Probability of a 4 double = 0.12 × 0.12 = 0.0144

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Probability of a 6 double = 0.3 × 0.3 = 0.09

Probability of a double with the die = (0.09 + 0.0064 + 0.0144 + 0.0144 + 0.0064 + 0.09) = 0.2216

4 0
3 years ago
The difference of two numbers is 3 the sum is 13 find the numbers
Serga [27]
X - y = 3
x + y = 13
Adding both equations
2x = 16
x = 8
y = 5


3 0
3 years ago
Read 2 more answers
What is the constant of proportionality?
lawyer [7]

Answer:

2

Step-by-step explanation:

5 0
3 years ago
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