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12345 [234]
3 years ago
9

The diagram shows the layout of Lena's kitchen. She is

Mathematics
2 answers:
Mariulka [41]3 years ago
5 0

Answer:

13

Step-by-step explanation:

Larger rectangle - smaller rectangle

(9×5) - [(5-2)×(9-7)]

45 - (3×2)

45 - 6

39 ft²

1 package : 3 ft²

X packages : 39 ft²

X/1 = 39/3

X = 13 packages

Setler79 [48]3 years ago
3 0

Answer:

13 packages

Step-by-step explanation:

We need to first find the area of the composite figure. We can draw a horizontal line through the figure so that it is broken up into two rectangles.

The top rectangle has dimensions of 9 ft by 2 ft, while the bottom rectangle has dimensions of 3 ft by 7 ft. The area of a rectangle is denoted by: A = lw, where l is the length and w is the width.

Here, the top rectangle has width 9 and length 2, so the area is A = 9 * 2 = 18 square feet. The bottom rectangle has width 7 and length 3, so the area is A = 7 * 3 = 21 square feet. Add these up:

18 + 21 = 39 square feet

We know that each package of tile will cover 3 square feet, so divide 39 by 3 to get the number of packages needed:

39 / 3 = 13

The answer is 13 packages.

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A group of consumers were randomly selected and asked whether they were planning to buy a new TV screen within the next year. 56
kodGreya [7K]

Answer:

The approximate probability is 0.1921.

Step-by-step explanation:

The <em>p</em>-value is defined as the probability, [under the null-hypothesis (H₀)], of attaining a result equivalent to or greater than what was the truly observed value of the test statistic.

The hypothesis to test whether the proportion of consumers that plan to buy a new TV screen within the next year is 0.22, is defined as:

<em>H₀</em>: The proportion of consumers that plan to buy a new TV screen within the next year is 0.22, i.e. <em>p</em> = 0.22.

<em>Hₐ</em>: The proportion of consumers that plan to buy a new TV screen within the next year is 0.22, i.e. <em>p</em> > 0.22.

The information provided is:

<em>n</em> = 230

<em>X</em> = 56

Compute the value of sample proportion as follows:

\hat p=\frac{X}{n}=\frac{56}{230}=0.2435

Compute the test statistic as follows:

z=\frac{\hat p-p}{\sqrt{\frac{p(1-p)}{n}}}=\frac{0.2435-0.22}{\sqrt{\frac{0.22(1-0.22)}{230}}}=0.87

The test statistic value is, 0.87.

Compute the <em>p</em>-value as follows:

p-value=P(Z>0.87)=1-P(Z

*Use a <em>z</em>-table for the probability.

The <em>p-</em>value of the test is 0.1921.

Thus, the approximate probability of obtaining a sample proportion equal to or larger than the one obtained here is 0.1921.

7 0
3 years ago
Please answer this !!!!
likoan [24]
The answer is B.
Slope is 3; point (2,7)
7=3(2)+B
7=6+B
1=B
M=3
y=3x+1 slope intercept form
3x -y = -1 standard form
8 0
4 years ago
Read 2 more answers
What is the measurement of ∠N?
djverab [1.8K]

Answer:

The measure of angle N is 141°.

Step-by-step explanation:

From the given figure it is noticed that the angle 39° and angle N lies on a straight line. It means both angles are supplementary angles.

If two angles are known as supplementary angles, then their sum is 180°.

Since angle 39° and angle N are supplementary angle, therefore their sum is 180°.

\angle N+39^{\circ}=180^{\circ}

Subtract 39 from both sides.

\angle N=180^{\circ}-39^{\circ}

\angle N=141^{\circ}

Therefore the measure of angle N is 141°.

4 0
4 years ago
Read 2 more answers
I need to know how to round to the nearest hundredth in the number 1.120
ryzh [129]
You can either round to 1000 or 2000 but 1.120 is closer to 1000
8 0
3 years ago
Read 2 more answers
List the steps taken to find the area of a triangle. Find the area of the
ICE Princess25 [194]

Answer:

base x height / 2

I'm guessing 10 and 17 are the base and height

10 x 17 = 170

170 / 2 = 85

85 is the area

Hope this helps

Step-by-step explanation:

5 0
3 years ago
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