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astraxan [27]
3 years ago
8

Người ta nuôi cá trong một bể xây mặt bể là hình chữ nhật có chiều dài là 80m chiều rộng 60m. Trên mỗi mét vuông mặt bể người ta

thả 12 con cá giống đến mỗi kỳ thu hoạch trung bình mỗi con cân nặng 240g giá bán 32000 đồng/kg và thấy lãi khi qua kỳ thu hoạch này là 200 triệu. Hỏi vốn mua cá giống và chi phí trong đợt này là bao nhiêu?
Mathematics
1 answer:
Andrews [41]3 years ago
7 0
T nghĩ giá vốn là 242368000 đồng
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An animal gained 5 kilograms steadily over 20 years. What is the unit rate of kilograms per​ year?
balandron [24]

The unit rate is 0.25 kilograms per year.

Step-by-step explanation:

Lets define unit rate first

Unit rate is the change in quantity per unit time.

Given

Weight = w = 5 kg

Time = t  = 20 years

So,

Unit\ rate = \frac{weight}{time}\\=\frac{w}{t}\\= \frac{5}{20}\\= 0.25

Hence,

The unit rate is 0.25 kilograms per year.

Keywords: Unit rate, rate of change

Learn more about unit rate at:

  • brainly.com/question/689294
  • brainly.com/question/6788996

#LearnwithBrainly

5 0
3 years ago
The solution set of 2-3x/4-8=3x/4​
deff fn [24]

Step-by-step explanation:

\\ \tt{:}\leadsto  \frac{2 - 3x}{4 - 8} =  \frac{3x}{4}   \\ \\ \tt{:}\leadsto 4(2 - 3x) = 3x(4 - 8) \\ \\ \tt{:}\leadsto 8 - 12x = 3x( - 4) \\ \\  \tt{:}\leadsto 8 - 2x =   - 12x \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \\ \\ \tt{:}\leadsto 8 =  - 12x + 2x \\ \\ \tt{:}\leadsto 8 =  - 10x \\ \\ \tt{:}\leadsto x =  \frac{ - 10}{8}  \\ \\ \tt{:}\leadsto x =  \frac{ - 5}{4}

6 0
3 years ago
Read 2 more answers
Simplify 5+10−2^3 <br> thanks in advance
andrey2020 [161]
5+10-2^3
= 7

Step by step:
5+10-2^3
= 15 - 2^3
= 15 - 8
= 7
8 0
3 years ago
WORTH 20
Viktor [21]

(2·3.5 + 4·3.25 + 2·1.9 + 1·1.2)·(1 - 0.05) = $23.75

5 0
3 years ago
A bank loaned out $8200, part of it at a rate of 7.9% per year and the rest of it at a rate of 7.4% per year. The total amount o
Lady bird [3.3K]

The amount that the bank loaned out at 7.9% is $1,574.00

How do represent the amounts lent at different rates?

On the assumption that x amount was loaned at 7.9% and that the remaining amount, (8,200-x) was loan out at 7.4%, we can determine the interest charged on each loan as the loan multiplied by the interest rate

interest on 7.9% loan=7.9%*x=0.079x

interest on 7.4% loan=7.4%*(8200-x)

interest on 7.4% loan=606.80-0.074x

total interest=0.079x+606.80-0.074x

total interest=0.005x+606.80

total interest on loans=614.67

614.67=0.005x+606.80

614.67-606.80=0.005x

7.87=0.005x

x=7.87/0.005

x=amount loaned at 7.9%=$1,574.00

y=$8200-$1574

y=$6,626.00

Find out more about bank loan interest rate on:brainly.com/question/20796174

#SPJ1

3 0
1 year ago
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