Answer:
The answer is 1
Step-by-step explanation:
14 = 2 × 7
51 = 3 × 17
21 = 3 × 7
5x+6 + 9x+2=360
5x+9x= 360-6-2
14x÷14=352÷14
x=25.14
Width = 9cm
Length = 18cm
<u>Explanation:</u>
Let width = b,
So, length = 2b
Perimeter of rectangle = 2x(length + width)
According to the question,
Hence,
Width = 9cm
Length = 18cm
Answer:
The answer is x = 25%
Step-by-step explanation:
84 represents 100% of the questions.
63 represents x% of the correct answers.
x = (63x100)/84
x = 6300/84
x = 75% correct answers.
percentage of the wrong answers:
100% - 75% = 25%
Answer:
74.6 m
Step-by-step explanation:
First look at the rectangle, which is 15 meters wide horizontally and 18 meters long vertically. This rectangle contributes 2(18 m) + 15 m to the perimeter (the 15 m side is the bottom of the figure). That comes to 2(18) m + 15 m, or 51 m.
Next, look at the semicircle. Its diameter is 15 m and thus its total circumference is approximately (3.14)(15 m), or 47.1 m. We take only half of this circumference in calculating the perimeter of this figure: 23.6 m.
The total perimeter of this figure is 23.6 m + 51 m, or approximately 74.6 m.
