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Darina [25.2K]
3 years ago
11

A science class has 5 girls and 7 boys in the seventh grade and 5 girls and 5 boys in the eighth grade. The teacher randomly sel

ects a seventh grader and an eighth grader from the class for a compettion. What is the probability that the students she selects are both boys?
Mathematics
1 answer:
Elodia [21]3 years ago
6 0
P(the students she selects are both boys)=7/12×5/10=35/120=7/24
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A triangle has sides with lengths 5, 12, and 13. Verify this is a Pythagorean triple. Approximate the acute angles in this trian
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A triangle with lengths 5, 12, and 13 is a Pythagorean triple

The approximate acute angles are 22.6° and 67.4°

Pythagorean triple

Pythagorean triple consist of positive number(a, b, c) such that it obeys the rule:

  • c² = a² + b²

A triangle whose sides form a Pythagorean triple is called a right angle triangle.

The longest side is the hypotenuse side.

Therefore,

  • 5² + 12²
  • 25 + 144 = 169
  • √169  = 13

Therefore,

5² + 12² = 13²

This means the triangle is a Pythagorean triple.

<h3>Acute angles</h3>

Acute angles are angles that are less than 90 degrees. This means the other two angles are acute angle.

Therefore, let's find them

  • tan ∅ = opposite / adjacent = tan ∅ = 5 / 12 = ∅ = 22.6198649155 = 22.6°
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learn more on Pythagorean triple here: brainly.com/question/2293263?referrer=searchResults

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2 years ago
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3 years ago
An amount of 41,000 is borrowed for 15 years at 8.5% interest, compounded annually. If the loan is paid in full at the end of th
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Answer: $139390 must be paid back.

Step-by-step explanation:

We would apply the formula for determining compound interest which is expressed as

A = P(1 + r/n)^nt

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r represents the interest rate.

n represents the periodic interval at which it was compounded.

P represents the principal or initial amount borrowed.

From the information given,

P = 41000

r = 8.5% = 8.5/100 = 0.085

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t = 15 years

Therefore,

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A = 41000(1 + 0.085)^15

A = 41000(1.085)^15

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3 years ago
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dlinn [17]

After 24 hours, 35.4% of the initial dosage remains on the body.

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The exponential decay is written as:

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2 years ago
What is the slope of the line?​
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Answer:

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