Answer:
10 cm
Step-by-step explanation:
From the diagram,
Applying,
lw = 5/2(bh)..................... Equation 1
Where l = length of the rectangle, w = width of the rectangle, b = base of the triangle, h = height of the triangle.
make w the subject of the equation
w = 5(bh)/2l............... Equation 2
From the diagram,
Given: l = 12 cm, b = 6 cm, h = 8 cm
Substitute into equation 2
w = 5(6×8)/(2×12)
w = 10 cm
Hence the width of the rectangle is 10 cm
Rose = <span>$2,600 x 0.041 x 9 = $959.40
Total = $2,600 + 959.40 = $3,559.40
</span>Dennis = <span>$2,200 x 0.057 x 9 = $1,128.60
Total = $2,200 + $1,128.60 = $3,328.60
</span>$3,559.40 - $3,328.60 = $230.80
<span>Answer
Rose has greater total amount of money than Dennis.
It's $230.80 greater than Dennis.
</span>
Let us denote the years of Mary with M and the years that Al have with A.
<span>We know that the sum of Mary and Al's age is 48. So, we can write:
M+A=48 (1)
</span><span>We also know that twelve years ago, Mary was twice as old as Al.
So we can write:
M-12=2*A (2)
From the first equation (1): M=48-A
Let put this in the second equation:
48-A-12=2A
36=3A
A=12
M=48-12=36
</span>
Answer:
The best estimate of the population mean for heart rate among football players is of 71.4 beats per minute.
Step-by-step explanation:
The best estimate for the population mean is the sample mean.
Sample mean:
Sum of all values in the sample divided by 10(size of the sample). So
The best estimate of the population mean for heart rate among football players is of 71.4 beats per minute.
