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stepladder [879]
3 years ago
10

What's the answer to this problem I'm stuck

Mathematics
1 answer:
Natalka [10]3 years ago
8 0
The perimeter is all the sides of a figure added together.
Perimeter of a rectangle = 2(l + w)
The perimeter is 40 meters.
The width is 9 meters.

40 = 2(l + 9)
40 = 2l + 18
22 = 2l
11 = l

The length of Judy's patio is:
11 meters.
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angle=cos^{-1}(30/100)
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Evaluate 2^−1 + 2^−1.
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Answer:

1

Step-by-step explanation:

2^−1 + 2^−1

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1

4 0
3 years ago
Jillian walked 0.5 miles before she started jogging at an average pace of 5 miles per hour. The equation d = 0.5 + 5t can be use
Mekhanik [1.2K]

Answer: independent variable: time (t). Dependent variable: distance (d).

Step-by-step explanation: an independent variable is a variable whose variation does not depend on that of another. In the given problem, the independent variable is time, because time will pass by no matter what (without depending in any other variable). The dependent variable in this case is the distance, because how far Jillian goes, depends on how much time she expends walking and jogging.

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3 years ago
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Construct a 99% confidence interval for the population standard deviation of white blood cell count (in cells per microliter). A
kogti [31]

Answer:

The correct option is 1.148 < σ < 6.015

Explanation:

The 99% confidence interval for the standard deviation is given below:

\sqrt{\frac{(n-1)s^{2}}{\chi^{2}_{\frac{0.01}{2} }} }

Where:

\chi^{2}_{\frac{0.01}{2} }=18.548

\chi^{2}_{1-\frac{0.01}{2}}=0.676

Therefore, the 99% confidence interval is:

\sqrt{\frac{(7-1)2.019^{2}}{18.548} }

1.148

Therefore, the option 1.148 < σ < 6.015 is correct

3 0
3 years ago
What is the solution of the inequality y ≤ x - 1 ?
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Answer:

no i cant help

Step-by-step explanation:

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