-4x+2(x-3)>4x-(3+5x)-7

The Quick Change Oil Company has a number of outlets in the metropolitan Seattle area. The daily number of oil changes at the Oa

Rashid [163]

Answer:

5 classes.

Step-by-step explanation:

You can use the $2^k$ rule to determine the number of classes for a frequency distribution.

The $2^k$ rule says that $2^k\geq n$ where

$k$ is the number of classes

$n$ is the number of the data points

We know that the number of data points is $n$ = 20.

Next, we start searching for $k$ so that we can get a number 2 to the $k$ that is larger that the number of data points.

$2^4=16\\2^5=32$

This suggests that you should use 5 classes.

8 0

3 years ago

Convert 7 pounds 3 ounces to

svetoff [14.1K]

7 pounds and 3 ounces equal to 3.27 kg

Step-by-step explanation:

We need to convert 7 pounds and 3 ounces to kilograms.

We know:

1 lb = 16 oz

and 1 kg = 2.2 lb

where lb stands for pounds and oz stands for ounces and kg stands for kilograms.

$16\,\,oz = 1\,\,pound\\1\,\,oz = \frac{1}{16} \,\,pound\\3\,\,oz = \frac{1}{16} * 3\,\,pounds\\3\,\,oz = 0.1875\,\,pounds$

So, Total pounds = 7+0.1875 = 7.1875

Now, Converting Pounds to kg

$2.2\,\,pounds = 1\,\,kg\\1\,\,pound = \frac{1}{2.2} \,\,kg\\7.1875\,\,pounds = \frac{1}{2.2} * 7.18757.1875\,\,pounds = 3.27\,\,kg$

So, 7 pounds and 3 ounces equal to 3.27 kg

Keywords: Converting Pounds to Kgs

Learn more about Converting Pounds to Kgs at:

#learnwithBrainly

4 0

3 years ago

A coin is flipped five times. Find the number of possible sets of heads and tails that have at most 3 heads

Mumz [18]

Answer:

$Sets = 27$

Step-by-step explanation:

Given

$Coin = 1$

$Toss = 5$

Required

Number of outcomes with at most 3 heads

First, we list out the sample space of a toss of coin 5 times

$(HHHHH)$ , $(HHHHT)$ , $(HHHTT)$ , $(HHTTT)$ , $(HTTTT)$ , $(TTTTT)$ , $(TTTTH)$ , $(TTTHH)$ , $(TTHHH)$ , $(THHHH)$ , $(HTHTH)$ , $(THTHT)$ , $(HHTHH)$ , $(TTHTT)$ , $(HTTHT)$ , $(THHTH)$ , $(THHHT)$ , $(HTTTH)$ , $(THHTT)$ , $(HTTHH)$ , $(HHTTH)$ , $(TTHHT)$ , $(TTHTH)$ , $(HHTHT)$ , $(HTHTT)$ , $(THTHH)$ , $(THTTH)$ , $(HTHHT)$ , $(HTHTT)$ , $(THTHH)$ , $(HHHTH)$ , $(TTTHT)$

Next, we list out all outcomes with at most 3 heads

, , $(HHHTT)$ , $(HHTTT)$ , $(HTTTT)$ , $(TTTTT)$ , $(TTTTH)$ , $(TTTHH)$ , $(TTHHH)$ , , $(HTHTH)$ , $(THTHT)$ , , $(TTHTT)$ , $(HTTHT)$ , $(THHTH)$ , $(THHHT)$ , $(HTTTH)$ , $(THHTT)$ , $(HTTHH)$ , $(HHTTH)$ , $(TTHHT)$ , $(TTHTH)$ , $(HHTHT)$ , $(HTHTT)$ , $(THTHH)$ , $(THTTH)$ , $(HTHHT)$ , $(HTHTT)$ , $(THTHH)$ , $(TTTHT)$

So, the number of set is:

$Sets = 27$

4 0

3 years ago

If bookshelf A is 6 feet long and bookshelf B is 8 feet long, what is the length of bookshelf C?

Sliva [168]

Answer:

3.5 feet = 3 feet 6 inches

3 * 12 = 36

36 + 6 = 42 inches long

42 / 5/8 → 42 * 8/5 = 42*8/5

336 / 5 = 67.2

We can't put up part of a book, so we can fit 67 books.

Step-by-step explanation:

3 0

2 years ago

A musical group sells headbands at there concert. After one concert , they sold 195 out if 300 white had bands and 300 out if 40

sergejj [24]

Answer:

The Black head bands are sold in greater percentage then white bands.

Step-by-step explanation:

Total number of White head bands = 300

Number of white bands sold = 195

⇒ $\textrm{Percentage of white bands sold} = \frac{\textrm{Total white head bands sold }}{\textrm{Total numberof white bands }} \times 100$

= $\frac{195}{300} \times 100 = 65$

or, Percentage of white bands sold = 65%

Total number of Black head bands = 400

Number of Black bands sold = 300

⇒ $\textrm{Percentage of black bands sold} = \frac{\textrm{Total black head bands sold }}{\textrm{Total numberof black bands }} \times 100$

= $\frac{300}{400} \times 100 = 75$

or, Percentage of Black bands sold = 75%

and , 75% > 65%

Hence, on comparison, we see that The Black head bands are sold in greater percentage then white bands.

4 0

2 years ago