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Lynna [10]
3 years ago
14

Can Somone Help me with my homework ​

Mathematics
2 answers:
lisov135 [29]3 years ago
6 0

Answer:

part A) yes, the bases and heights are the same

Part B) yes, the bases and heights are the same

Part C) not enough info

Step-by-step explanation:

Part C)

area of the circle = π(1/2h)²

area of ellipse = π(1/2h)(1/2 major axis)

DedPeter [7]3 years ago
5 0

Part A:

The area of a triangle is given by the product of its base and the height relative to that base.

Since theses triangles have the same base b and same height h, they have the same area.

Part B:

The area of a rectangle or parallelogram is given by the product of base and height. Since these figures have the same base and height, they have the same area.

Part C:

These figures have different shapes, so we can't affirm that they have the same area.

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Step-by-step explanation:

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Suppose that 90% of bolts and 85% of nails meet specifications. One bolt and one nail are chosen independently. What is the prob
White raven [17]

Answer:

76.5% probability that both meet specifications.

1.5% probability that neither meets specifications

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Step-by-step explanation:

We have these following probabilities:

A 90% probability that a bolts meets specifications

A 85% probability that a nail meets specifications.

What is the probability that both meet specifications?

We multiply both probabilities:

0.9*0.85 = 0.765

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What is the probability that neither meets specifications?

A 10% probability that a bolts does not meet specifications

A 15% probability that a nail does not meet specifications.

0.1*0.15 = 0.015

1.5% probability that neither meets specifications

What is the probability that at least one of them meets specifications?

Either neither meets specifications, or at least one of them does. The sum of these probabilities is 100%.

From the second question, 1.5% probability that neither meets specifications.

So 100-1.5 = 98.5% probability that at least one of them meets specifications

3 0
3 years ago
Find the circumference of a circle with radius 280 mm. Use 22/7 for π
lara31 [8.8K]

Answer:

1760 mm

Step-by-step explanation:

The circumference of a circle can be found using:

c=2πr

We know that the radius is 280. Therefore, we can substitute 280 in for r

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We also know that we are using 22/7 for π, so we can substitute that in

c=2* 22/7 * 280

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c=560* 22/7

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So, the circumference is 1760 mm

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