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Maru [420]
3 years ago
5

A^2-36=5a A. {4,-9} B. {5+√61/2, 5-√61/2} C. No solution D. {9,-4}

Mathematics
1 answer:
ASHA 777 [7]3 years ago
6 0

Answer:

D

Step-by-step explanation:

Given

a² - 36 = 5a ( subtract 5a from both sides )

a² - 5a - 36 = 0

Consider the factors of the constant term (- 36) which sum to give the coefficient of the a- term (- 5)

The factors are - 9 and + 4 , since

- 9 × + 4 = - 36 and - 9 + 4 = - 5 , then

(a - 9)(a + 4) = 0 ← in factored form

Equate each factor to zero and solve for a

a - 9 = 0 ⇒ a = 9

a + 4 = 0 ⇒ a = - 4

solution is { - 9, 4 } → D

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3 years ago
Which statement is true about the equations -3x + 4y = 12 and #x - 4y = 1?
Amanda [17]

Answer:

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Step-by-step explanation:

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2 years ago
A hypothetical population consists of eight individuals ages 13, 14, 17, 20, 21, 22, 24, & 30 years.
Alika [10]

Complete Question

A hypothetical population consists of eight individuals ages 13 14 17 20 21 22 24 30 years.  

A: what is the probability that a person in this population is a teenager?  

B: what is the probability of selecting a participant who is at least 20 years old?

We have that  probability that a person in this population is a teenager and probability of selecting a participant who is at least 20 years old is

From the question we are told

A hypothetical population consists of eight individuals ages 13, 14, 17, 20, 21, 22, 24, & 30 years.

  • P(T)=0.38
  • P(T')=0.63

a)

Generally the equation for the  probability that a person in this population is a teenager   is mathematically given as

P(T)=\frac{no of teens}{n}\\\\P(T)=\frac{3}{8}

P(T)=0.38

b)

Generally the equation for the probability of selecting a participant who is at least 20 years old  is mathematically given as

P(T)=\frac{ participants\ who\ is\ at\ least\ 20\ years old}{n}\\\\P(T)=\frac{5}{8}

P(T')=0.63

For more information on this visit

brainly.com/question/11234923?referrer=searchResults

6 0
2 years ago
I can't seem to figure out how to do this? Can someone please not just give me the answer but also explain it to me?
Zinaida [17]

Answer:

bro

Step-by-step explanation:

just skip

8 0
3 years ago
Just please help me, im trying to cram multiple things at once (house is crazy) and I just cant seem to concentrate and understa
Anastasy [175]
Y=31.2
X=15.6

I rounded both to the nearest tenth place.
5 0
3 years ago
Read 2 more answers
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