Please help me with this geo problem

Mathematics

1 answer:

Over [174]4 years ago

5 0

Answer:

x = 1.25
y = 1.75

Step-by-step explanation:

Find x

8/10 = 5/(5 + x) Cross multiply
8*(5 + x) = 10*5 Combine on the right
8(5 + x) = 50 Remove the brackets on the left.
40 + 8x = 50 Subtract 40 from both sides.
40-40 +8x = 50-40 Combine
8x = 10 Divide by 8
8x/8 = 10/8 Divide
x = 1.25

Find y

7/(7 + y) = 8/10 Cross multiply
8*(7 + y) = 10 * 7 Combine the right
8(7 + y) = 70 Remove the brackets.
56 + 8y = 70 Subtract 56 from both sides
56 - 56 + 8y = 70 - 56 Combine
8y = 14 Divide by 8
y = 1.75

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Claim: The mean pulse rate (in beats per minute) of adult males is equal to 68.9 bpm. For a random sample of 134 adult males, th

LenaWriter [7]

Part A. Express the original claim in symbolic form.

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Therefore, the original claim in symbolic form is:

ANSWER:

$\mu=68.9\text{ bpm}$

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6 0

2 years ago

How do you do this question?

attashe74 [19]

Answer:

∑ₙ₌₀°° 8 (-1)ⁿ x⁴ⁿ⁺¹ / (9ⁿ (2n)!)

Step-by-step explanation:

Start with the Maclaurin series for cos x.

cos x = ∑ₙ₌₀°° (-1)ⁿ x²ⁿ / (2n)!

Substitute ⅓ x².

cos (⅓ x²) = ∑ₙ₌₀°° (-1)ⁿ (⅓ x²)²ⁿ / (2n)!

cos (⅓ x²) = ∑ₙ₌₀°° (-1)ⁿ (⅓)²ⁿ x⁴ⁿ / (2n)!