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Tems11 [23]
3 years ago
10

Ela

Mathematics
1 answer:
77julia77 [94]3 years ago
4 0

Answer: 3 × 10⁴ miles²

Step-by-step explanation:

Given that:

Estimated Surface area of Lake = 30,000 square miles

Expressing the estimated area as a whole number multiplied by a power of ten

Hence, we are required to express the surface area in standard form:

30,000 miles ² in standard format:

30,000 is equivalent to (3 × 10,000)

3 is a whole number

10,000 = (10 * 10 * 10 * 10)= 4 th power of 10

10,000 = (10 * 10 * 10 * 10) = 10⁴

Hence,

3 × (10 * 10 * 10 * 10) = 3 × 10⁴ miles²

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3 0
3 years ago
Solve for n.<br> n^2–15n–16=0
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3 years ago
A marble is randomly selected from a bag. The probability of selecting a marble with dots on it is 0.2. The probability of selec
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Answer:

0.5

Step-by-step explanation:

Let D be the event of selecting a marble with dots.

Let P be the event of selecting a purple marble.

The probability of selecting a marble with dots, P(D)=0.2

The probability of selecting a marble that is both purple and has dots, P(D \cap P)=0.1

We want to determine the probability of selecting a purple marble given that the marble has dots on it, P(P|D)

By the definition of conditional probability:

P(P|D)= \dfrac{P(P \cap D)}{P(D)} \\= \dfrac{0.1}{0.2}\\ =0.5

The probability of selecting a purple marble given that the marble has dots on it is 0.5.

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3 years ago
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It’s either C or B but I’m not sure
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3 years ago
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Answer:

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Step-by-step explanation:

<u>Perimeter of garden A  is </u>

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<u>Perimeter of garden B  is </u>

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<u>Sum of perimeters:</u>

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The statement 2 is FALSE as number we got is different from the one in the statement

6 0
3 years ago
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