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mars1129 [50]
2 years ago
7

Practice Set 1.4 by 1. Solve the following simultaneous equations. 2 3 (1) 8 5 15 ; -+-= = 77 = ху + x y er's 15 5 () (2) 10 2.

-=4 ; x+y x- y = -2 x+y x-y 27 31 (3) + = 85 ; 31 27 + = 89 x- 2y+3 x- 2y+3 (4) 1 1 3 3x + y 3x - y 4 + II 1 1 2(3x + y) 2(3.x - y) 8 19​
Mathematics
2 answers:
ale4655 [162]2 years ago
8 0

Answer:

que?

SEIKŌ O DAMARE!!

ANATA WA WATASHI

Goshia [24]2 years ago
3 0

Answer:

wow are fan of Lisa from BLACKPINK

NICE

I TOO LIKE HER

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Adult tickets to the fall play cost $6 and student tickets cost $3. The drama class sold 25 more student tickets than adult tick
svlad2 [7]

9514 1404 393

Answer:

  • 90 student tickets
  • 65 adult tickets

Step-by-step explanation:

For many "mixture" problems, it is convenient to use a variable for the quantity of the highest contributor. Here, we can use 'a' to represent the number of adult tickets, because adult tickets cost the most. Then the number of student tickets is (a+25), and the total revenue is ...

  6a +3(a+25) = 660

  9a +75 = 660

  9a = 585

  a = 65

  (a+25) = 90

The drama class sold 90 student tickets and 65 adult tickets.

6 0
3 years ago
Twelve percent of the population is left handed. Approximate the probability that there are at least 20 left-handers in a school
DochEvi [55]

Answer:

Step-by-step explanation:

We would assume a binomial distribution for the handedness of the population. Let x be a random variable representing the type of handedness in the population. The probability of success, p is that a randomly chosen person is left handed only. Then probability of failure is that a chosen person is not left handed only(right handed only or both).

p = 12/100 = 0.12

number of success, x = 20

n = 200

the probability that there are at least 20 left-handers is expressed as P(x ≥ 20)

From the binomial probability calculator,

P(x ≥ 20) = 0.84

8 0
3 years ago
jack drove at an average speed of 47.3 miles per hour for 2.5 hours. how far did he drive? 118.25 49.8 44.8 18.92
Gekata [30.6K]
The answer is 47.3 x 2.5= 118.25
8 0
3 years ago
Read 2 more answers
Calculate the area of a circle with a radius of 8 feet
Ulleksa [173]

Answer:

201.06 square feet

Step-by-step explanation:

area of a circle is given by πr², where π = 3.1416

A = 3.1416 * 8²

A = 3.1416 * 64 = 201.0624 square feet

A = 201.06 square feet

3 0
2 years ago
The sum of 2 numbers is 45. The larger number y is 6 less than twice the smaller number X. What is the smaller number?
Flauer [41]

Answer:

x+y=45

x+2x-6=45 (equation)

3x=39

x=13=smaller number




3 0
3 years ago
Read 2 more answers
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