Answer:
AED 3400
Step-by-step explanation:
The perimeter of the rectangular orchard is twice the sum of length and width, so is ...
P = 2(L+W) = 2(39 m +46 m) = 170 m
At a cost of 20/m, the cost of fence is ...
cost = (AED 20/m)·(170 m) = AED 3400
1) 0,4x (5x – 6) + 7,2 = 2x (x + 0,6);
2) x (3x+2)-9 (x²-7x)=6x (10-x);
3) 12 (x³ - 2) -7x (x² − 1) = 5x³ +2x+6.
Answer:
Давайте рассмотрим каждое уравнение по очереди:
Уравнение: 0.4x(5x - 6) + 7.2 = 2x(x + 0.6)0.4x(5x−6)+7.2=2x(x+0.6)
Раскроем скобки:
2x^2 - 2.4x + 7.2 = 2x^2 + 1.2x2x
2
−2.4x+7.2=2x
2
+1.2x
Теперь выразим все в одну часть уравнения:
-2.4x + 7.2 = 1.2x−2.4x+7.2=1.2x
3.6x = 7.23.6x=7.2
x = 2x=2
Уравнение: x(3x+2) - 9(x^2 - 7x) = 6x(10 - x)x(3x+2)−9(x
2
−7x)=6x(10−x)
Раскроем скобки:
3x^2 + 2x - 9x^2 + 63x = 60x - 6x^23x
2
+2x−9x
2
+63x=60x−6x
2
Теперь выразим все в одну часть уравнения:
3x^2 - 9x^2 + 2x - 63x - 60x + 6x^2 = 03x
2
−9x
2
+2x−63x−60x+6x
2
=0
-3x^2 - 59x = 0−3x
2
−59x=0
x(-3x - 59) = 0x(−3x−59)=0
Отсюда получаем два возможных значения xx: x = 0x=0 или x = -\frac{59}{3}x=−
3
59
.
Уравнение: 12(x^3 - 2) - 7x(x^2 - 1) = 5x^3 + 2x + 612(x
3
−2)−7x(x
2
−1)=5x
3
+2x+6
Раскроем скобки:
12x^3 - 24 - 7x^3 + 7x = 5x^3 + 2x + 612x
3
−24−7x
3
+7x=5x
3
+2x+6
Теперь выразим все в одну часть уравнения:
5x^3 - 2x^3 + 7x - 2x - 24 - 6 = 05x
3
−2x
3
+7x−2x−24−6=0
3x^3 + 5x - 30 = 03x
3
+5x−30=0
Это уравнение не имеет очевидного решения, поэтому придется использовать численные методы для его решения.
(°C) Distance
(inches)
0 10
2 12
4 12
5 15
9 10
9 8
10 6
10 9
10 8
12 7
12 7
13 5
14 4
16 2
18 2
19 2
19 2
19 1
19 1
20 0
21 4
21 0
The chart shows the damage index to a head gasket on trucks according to ambient temperature. Draw a scatterplot of the data.
Which equation is closest to the line of best fit?
A) y = 14 x - 2/3
B) y = -14 x + 2/3
C) y = -2/3 x + 14
D) y = 2/3 x - 14
If we take a look at the data presented in the chart we can see the damage that the head gasket on truck suffers according to the ambient temperature. The correct answer is letter C) because there is a negative slope that is less than one and the y-intercept begins 14 units up the y-axis.
I hope this helps, Regards.
Answer:
C. I would recommend that he does not go as lower temperatures have a strong negative correlation, therefore the lower the temperature the more damage is caused
Step-by-step explanation:
The correct answer is I would recommend that he does not go as lower temperatures have a strong negative correlation, therefore the lower the temperature the more damage is caused. For temperatures below 19 degrees Celsius the scatterplot forms a negative correlation.