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2 years ago

In triangle JKL, solve for x

Mathematics

2 answers:

BlackZzzverrR [31]2 years ago

8 0

Answer: x = 74.89

Step-by-step explanation:

sin 27= opp/hyp = 34/x

x(sin 27)/(sin 27) = 34/(sin 7)

x(0.453990499)/(0.453990499) = 34/0.453990499

x= 74.89

Im actually working on this question rn, and i was a little confused so i came here but turns out i just put some other ratio on my calc. Hope this helped.

MrRissso [65]2 years ago

3 0

I hope this helps you

sin27=0.45=34/x

x=34/0.45

x=75.55

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91 is 70% of what number?91 is 70% of what number?

Oduvanchick [21]

Answer: 91 is 70% of 130

Step-by-step explanation:

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2 years ago

Read 2 more answers

Prove that C(50,3) + C(50,4) = C(51,4)

valkas [14]

By definition of the binomial coefficient,

$C(n,k) = \dfrac{n!}{k!(n-k)!}$

so we have

$C(50,3) + C(50,4) = \dfrac{50!}{3!47!} + \dfrac{50!}{4!46!} \\\\ = \dfrac{50!}{3!46!} \left(\dfrac1{47} + \dfrac14\right) \\\\ = \dfrac{50!}{3!46!} \times \dfrac{51}{188} \\\\ = \dfrac{51!}{3!46!} \times \dfrac1{4\times47} \\\\ = \dfrac{51!}{4!47!} \\\\ = \dfrac{51!}{4!(51-4)!} = C(51,4)$

as required.

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1 year ago

The drama club was selling tickets

Lubov Fominskaja [6]

Answer:

108 student tickets, and 176 adult tickets were sold

Step-by-step explanation:

Adult ticket $8 Call the number of adult tickets sold "a"

Student ticket $5 Call the number of student tickets sold "s"

Since we are talking about TWO consecutive days of sold out seats, the total number of seats sold were 2* 142 = 284

Then we create two different equations with the information given:

a + s = 284

8 * a + 5 * s = 1948

we can solve for s in the first equation as follows: s = 284 - a

and use it in the second equation

8 a + 5 (284 - a) = 1948

8 a + 1420 - 5 a = 1948

combining

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we find the number of student tickets using this answer in the substitution equation we used:

s - 284 - 176 = 108

Therefore 108 student tickets, and 176 adult tickets were sold.

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2 years ago

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LUCKY_DIMON [66]

Answer:

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Step-by-step explanation:

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2 years ago

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Julli [10]

Answer:

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Step-by-step explanation:

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2 years ago