Answer:
439.6 cm²
Step-by-step explanation:
Surface area of the cylinder is the length of the rectangular strip that goes around, and the are of the two circles
Area circle = πr²
Area circle = 3.14 * 7²
Area circle = 3.14 * 49
Area circle = 153.86
The area of both circles is 153.86 x 2 = 307.72
The rectangular strip is the diameter by the height
Diameter = 2πr
Diameter = 14*3.14 = 43.96
The strip is 43.96 x 3 = 131.88
Total surface area is 307.72 + 131.88 = 439.6
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Answer:
a. 3(16-21) - 4(8-18) +5(7-12) = -15 + 40 - 25 = 0
b. 3(21-24) - 5(7-12) + 8(4-6) = -9 + 25 - 16 = 0
Answer:
Yes,there is a significant association shell weight and the widths of the opercula
Step-by-step explanation:
Using a correlation Coefficient calculator :
Given the data above :
The Coefficient of correlation(r) obtained is :
0.7632
Obtaining the test statistic :
T = r² / √(1 - r²) / (n - 2)
T = 0.7632² / √(1 - 0.7632²) / (10 - 2)
T = 0.58247424 / 0.2284528
Test statistic = 2.550
The Pvalue from r score , N = 10
Pvalue(0.7632, 10) = 0.01022
α = 0.05
If Pvalue < α ; reject H0
Pvalue < α ; We conclude that there is a significant association shell weights and the widths of the opercula
Answer:
X1 =-10, X2= 4
Step-by-step explanation:
|-3-x|-2=5
|-3-x|=5+2
|-3-x|= 7
-3-x=7
-4-x=-7
Then slove for X
Answer:
when u distribute a number you are basically giving the number off and multiplying other factors by that number
Step-by-step explanation:
3(x+4) ( distribute the 3 ) so u would multiply the 3 by both factors ( the x and the 4) getting 3x+12
