Answer:
c) y = - 2 x +3
d) y = 1/2 x + 1
Step-by-step explanation:
For c) Look for the exression that contains "3" as the y-intercept (the "b" in the form y = m x + b)
The only equation is y = - 2 x +3
For d) try in all equations if replacing x with 2, gives you an answer "2" for y as well.
The only equation that does such is y = 1/2 x + 1
Trả lời:
86 và 91
Giải thích từng bước:
Cho hai số là x và y. Nếu tổng của chúng là 177, thì;
x + y = 177 ... 1
Nếu 17 bị trừ đi số đầu tiên, nó được biểu thị là x - 17
Nếu 25 được thêm vào số thứ hai l, nó được biểu thị bằng y + 25
Nếu số thứ nhất bây giờ bằng 2/3 số thứ hai, thì:
x-17 = 2/3 (y + 25) .... 2
Từ 1, x = 177-y ... 3
Thay thế 3 thành 2
177-y-17 = 2/3 (y + 25)
160-y = 2/3 (y + 25)
3 (160-y) = 2 (y + 25)
480-3y = 2y + 50
-3y-2y = 50-480
-5y = -430
y = 430/5
y = 86
Vì x = 177-y
x = 177-86
x = 91
Do đó hai số là 86 và 91
Answer:
mean <median <mode
Step-by-step explanation:
We must calculate the measures of central tendency, which are the mode, the mean and the median.
fashion, value that is most repeated, in this case 87
median, the mean value, how is an even number, the mean is the average of these central numbers, in this case it is 82 and 87
(82 + 87) / 2 = 84.5
average, is the average of all the data, we calculate it like this:
(60 + 74 +82 +87 +87+ 94) / 6 = 80.66
Therefore, the relationship would be like this:
mean <median <mode
If we let the number of flip-flops be x in the equation and that the cost would be y ( in terms of x) and the income would be z ( in terms of x), these equations will likely intersect each other during breakeven. That is, when the total revenue that the company will gain from sales of the flip-flops just be equal with the total cost.
