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4 years ago

Please help with this

Mathematics

1 answer:

Sergeeva-Olga [200]4 years ago

8 0

Answer:

33.3 pounds

Step-by-step explanation:

Alright, so if she made a 100 percent on the gloves, then she sold them for 8 dollars, because 4 + 1.00(4) = 8.

48 - 8 = 40

She sold the skirt for 40 dollars, and if that's at a 20 percent profit, then we can do a proportion

$\frac{40}{1.20} = \frac{x}{1.00}$

If we solve for x, we figure out that x = 33.33333 repeating.

So out answer to the nearest decimal place is 33.3 pounds

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The National Highway Traffic Safety Administration reported the percentage of traffic accidents occurring each day of the week.

Zigmanuir [339]

Answer:

Hence,

Test statistic $X^{2}$ = 9.269.

p value = 0.148

Sunday= 15.23%, Monday= 12.62%, Tuesday= 13.10%, Wednesday=11.67%,

Thursday= 13.10%, Friday= 16.19%, Saturday= 18.09%.

Step-by-step explanation:

relative observed Expected Chi square

Category frequency(p) $O_{i}$ Ei=total*p $(O-E)^{2}$ $R^{2}_{i} =(O_{i} -E_{i} )^{2} /E_{i}$

1 0.142857143 64.0 60.00 16.00 0.267

2 0.142857143 53.0 60.00 49.00 0.817

3 0.142857143 55.0 60.00 25.00 0.417

4 0.142857143 49.0 60.00 121.00 2.017

5 0.142857143 55.0 60.00 25.00 0.417

6 0.142857143 68.0 60.00 64.00 1.067

7 0.142857143 76.0 60.00 256.00 4.267

Total 1.000 420 420 556 9.269

Test statistic $X^{2}$ = 9.269.

p value = 0.148 from excel: chidist(9.269,6)

Percentage %= Frequency of traffic occur on category x 100 / Total number of frequency given.

Category Percentage%

Sunday 15.23%

Monday 12.62%

Tuesday 13.10%

Wednesday 11.67%

Thursday 13.10%

Friday 16.19%

Saturday 18.09%

5 0

3 years ago

What is the unit value of the 6 in 216

Marianna [84]

<span>What is the unit value of the 6 in 216 ?
</span>6 ones

8 0

4 years ago

Read 2 more answers

Describe the center and spread of the data using either the mean and standard deviation or the five-number summary. Justify your

goblinko [34]

Answer:

The distribution is skewed, so use the five-number summary. range: 38, median: 16, half of the data are between 9.5 and 25

Step-by-step explanation:

In the picture attached the histogram is shown. We can see that data is skewed to the right, so we have to use the five-number summary. The range of the data is 39 - 1 = 38 (subtraction of the maximum value to the minimum value); the median is (15 + 17)/2 = 16 (if you order the values, 15 and 17 are in the middle); quartile 1 is 9.25 and quartile 3 is 25.5 (see diagram of box and whisker attached), then half of the data are between those values.

8 0

3 years ago

A rotating lawn sprinkler sprays water in a circular area of grass, as shown in the picture. The diameter of the circular area o

Ksenya-84 [330]

Answer:

The area the sprinkler sprays with water is 201.06 square feet.

Step-by-step explanation:

Step 1; It is given that the diameter of the circular area of grass that the sprinkler sprays with water is 16 feet. The diameter of a circle is equal twice its radius. So we divide the diameter by 2 to get its radius.

Radius of the circle = Diameter of the circle / 2 = 16 feet / 2 = 8 feet.

Step 2; The area of any given circle is π times the square of the radius. The radius of this circle is equal to 8 feet.

Area of the circle = π × r² = 3.1415 × 8 feet = 201.056 square feet.

7 0

4 years ago

A computer technician charges $40.00 per hour plus a $70.00 service charge.your fathers firm hires him to hook up his companies

Debora [2.8K]

The answers is $270, because $40*5 equals 200,then add70 equals 270

5 0

3 years ago