Help me please on 12
2 answers:
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The image of the arrow is missing, so i have attached it.
Answer:
A_t = 69.5 cm²
Step-by-step explanation:
In a second image attached, I have divided the arrow into triangle and rectangle.
From the second image,
A1 is area of triangle while A2 is area of rectangle
Area of triangle is; A1 = ½bh
Our triangle base is given as 9 cm.
To get the height, we will subtract the rectangle height of 8 cm from the total arrow height.
Thus; height of triangle; h = 11 - 8 = 3cm
Thus;
A1 = ½ × 9 × 3
A1 = 13.5 cm²
Formula for area of rectangle is;
A2 = length × breadth
A2 = 8 × 7
A2 = 56 cm²
Thus, total area of arrow is;
A_t = A1 + A2 = 13.5 + 56
A_t = 69.5 cm²
Answer: B. 0.036
Step-by-step explanation:
Formula for standard error :
, where p = Population proportion and n= sample size.
Let p be the population proportion of the people who favor new taxes.
As per given , we have
n= 170
Substitute these values in the formula, we get
Hence, the standard error of the estimate is 0.036.
∴ The correct answer is OPTION B. 0.036
Answer:
9
Step-by-step explanation:
I would guess it looks like this - if not then tell me
2×3=6
5-2=3
Then there's only
Which is equal to