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3 years ago

I just need help on this

Mathematics

2 answers:

Tju [1.3M]3 years ago

8 0

Answer:

a = 12.1

A (area) = 66.7

Step-by-step explanation:

Because the right triangle with legs lengths a and 7 has a hypotenuse or 14, you can use the Pythagorean Theorem (I think you know this from the scratch work you have done) and get a^2+49=196, so a^2=147, so a is 7sqrt3, and sqrt3 is approximately 1.732, 7sqrt3 is 7 + 4.9 + 0.21 + 0.014, or 11.9 + 0.224 or 12.124, which is approximately 12.1.

To find the area, we can just do 7sqrt3 times the base length, or 4 + 7 = 11, over 2. This is 77/2 times sqrt3 (1.732). To find this, we can do 38.5 * 1.732, or (40 * 1.732) - (1.5 * 1.732), which is 4 * 17.32 minus (1.5 * 1.732), or 69.28 - 1.732 - 0.866, which is 66.682 or 66.7.

Note: We can use 12.1 as the height, but because it is not fully rounded, you will get a different result (66.55 or 66.6).

natima [27]3 years ago

3 0

Answer: 12.1

Step-by-step explanation:

14^2 - 7^2 = square root of a

196 - 49 = square root of a

147 = square root of a

147 square rooted equals 12.1243557 rounded to the nearest tenth is

12.1

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snow_lady [41]

Answer:

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Step-by-step explanation:

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So, probability of success = 0.05

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We will use binomial distribution

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So, $P(X\leq 2)=P(X=0)+P(X=1)+P(X=2)$

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2 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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Answer:

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Answer:

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Step-by-step explanation:

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