For problem 1, it will be 25/100, which is equal to 25%
2) The relationship is that both, the bar model and the proportion, show that x is 1/4 of the actual amount. The bar graph is more a visual. However, in both cases, the x can be solved for to be 25%
3) The percent error for 23°C will be less since it is closer to 25°C, the actual amount. The percent error is greater for 5°C since it is farther for 25°C.
Answer:
Length = 17 cm
Width = 8 cm
Step-by-step explanation:
Let the length be x cm
Therefore, Width = (x - 9) cm
Perimeter of rectangle = 2(l +w)
50 = 2[x + (x - 9)]
50/2 = 2x - 9
25 = 2x - 9
25+ 9 = 2x
2x = 34
x = 34/2
x = 17 cm
x - 9 = 17 - 9 = 8 cm
Therefore,
Length = 17 cm
Width = 8 cm
Thus, the dimensions of the rectangle are 17 cm and 8 cm.
Um.. :/ you can do all 4 operations, I think adding or subtraction will be the easiest while division might be the hardest.
For division it looks sum like this.
(3x^2+5x+2)/(2x+1)
Multiplication:
(x+5)(x-3)
Addition:
<span>(2x
+ 5y) + (3x – 2y)</span>
Subraction:
<span>(x3 + 3x2 + 5x – 4) – (3x3 – 8x2 – 5x + 6) or simpler
Sorry for the wait I had to find your examples
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Answer:
2 (x^2-10)((x^2 +10)
Step-by-step explanation:
2x^4 - 200
Factor out 2
2(x^4 -100)
The inside is the difference of squares (a^2 -b^2) = (a-b)(a+b)
2 (x^2-10)((x^2 +10)