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1 year ago

14. Jabari has read 13 chapters of a 22-chapter book. What percent of the chapters has she read?

Mathematics

1 answer:

Doss [256]1 year ago

4 0

Jabari has read 59.09 percent of the chapters.

What is a percent?

A percentage is a figure or ratios that is stated as a portion of 100 in arithmetic. Although the abbreviations "pct.", "pct.", and frequently "pc" are also employed the percent symbol is most frequently used to indicate it. A percentage is a number without dimensions. It lacks a measuring system. The Latin phrase per centum, which states "hundred" or "by the hundred," is where the word "percent" originates. The Italian phrase percento, which means "for a hundred," gradually sqeezed to become the symbol for "percent." Per became frequently shortened to "p" and finally vanished completely. Two circles and a horizontal line made up the "cento," which is where the present "%" sign is from.

Jabari read 13 chapters out of 22

In percents = 13/22 x 100 percent

= 59.09 percent

To know more about percents, click on the link

brainly.com/question/1053881

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11. 5x + 5 what does it equal to

Shkiper50 [21]

Answer:

Step-by-step explanation:

Okay this is an odd question, but what i'm thinking is that

first you have

5x+5

To actually be able to solve we have to move the 5 to the other side.

To do this we subtract it.

Making the equation

5x = -5

Then you need to isolate the variable (X)

So divide 5X by 5, and then divide -5/5

Which leaves you with:

x=-1

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3 years ago

Determine the average speed of the current in a river if a boat moves at 20 miles/hour in still water and takes 3 hours to trave

Taya2010 [7]

The speed of the current in a river is 6 miles per hour

Solution:

Given that,

Speed of boat in still water = 20 miles per hour

Time taken = 3 hours

Distance downstream = 78 miles

To find: Speed of current

If the speed of a boat in still water is u km/hr and the speed of the stream is v km/hr, then:

Speed downstream = (u + v) km/hr

Speed upstream = (u - v) km/hr

Therefore, speed downstream is given as:

$\text{ speed downstream } = \frac{distance}{time} = \frac{78}{3}\\\\\text{ speed downstream } = 26 \text{ miles per hour }$

We know that,

Speed downstream = (u + v)

26 = 20 + v

v = 26 - 20

v = 6 miles per hour

Thus speed of the current in a river is 6 miles per hour

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3 years ago

Sasha ordered a set of green and blue pins. She received 20 pins in all. 10 of the pins were green. What percentage of the pins

arlik [135]

Answer:

50%

Step-by-step explanation:

10 of the pins were green

there are 20 pins in total

10/20 of the fries are green

10/20=1/2=50/100

50/100=50%

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3 years ago

Urgent! Will award brainliest... Factor the following polynomial: <img src="https://tex.z-dn.net/?f=3a%5E%7B2%7D-21a%2B3

umka2103 [35]

Answer:

$3 (a-2) (a-5)$

Step-by-step explanation:

The first step is to find the GCF. Here, it's 3.

$3(a^2-7a+10)$

Then, you factor the polynomial in the parenthesis.

To find the factors, you will need to find 2 numbers that add to -7, and multiply to 10. -2 and -5 add to -7 and multiply to 10. Now, replace -7a with the factors.

$a^2-2a-5a+10$