All categories

3 years ago

The perimeter of a trapezoid is 39a-7. Three sides have the following lengths : 9a, 5a + 1 and 17a -6

Mathematics

1 answer:

Assoli18 [71]3 years ago

4 0

The length of fourth side is: 8a-2

Step-by-step explanation:

Given

Perimeter = P = 39a-7

$Side1 = s_1 =9a\\Side2=s_2=5a+1\\Side3=s_3=17a-6\\Side4=?$

The perimeter is given by:

$P = s_1+s_2+s_3+s_4\\39a-7 =9a+5a+1+17a-6+s_4\\39a-7=31a-5+s_4\\s_4=39a-31a-7+5\\s_4=8a-2$

The length of fourth side is: 8a-2

Keywords: Perimeter, trapezoid

Learn more about perimeter at:

#LearnwithBrainly

You might be interested in

Find the mean, median, mode, and range of the data set 19, 7, 16, 2, 10, 6, 7. If necessary, round

Maslowich

Answer:

Mean: 9.6

Median: 7

Mode: 7

Range: 17

Step-by-step Explanation:

<em>Mean: add all the numbers then divide the sum by how many numbers there are </em>

19 + 7 + 16 + 2 + 10 + 6 + 7 = 67

67 / 7 = 9.57 --> 9.6

<em>Median: arrange your numbers in numerical order, count how many numbers you have (if odd, divide by 2 and round up to the position of a median number, if even, divide by 2 and go to that number in position) </em>

2, 6, 7, 7, 10, 16, 19 (7 numbers = since its odd, divide by 2 which equals 3.5, round it up to 4 and go to the number in the 4th position, in this case 7)

<em>Mode: Put the number in order again and determine which number appears the most</em>

2, 6, 7, 7, 10, 16, 19 = 7 appears twice while the rest only appears once

<em>Range: subtract the lowest value from the highest value</em>

19 - 2 = 17

4 0

3 years ago

Read 2 more answers

the population of a city is 550 000. it is expected that the population will increase by 42% by 2008. calculate the expected pop

oksian1 [2.3K]

Answer:

781000

Step-by-step explanation:

550000* 42%

231000+550000

(=^w^=)

5 0

3 years ago

Simplify cubed 5 -10/27

MAXImum [283]

The correct answer for the given expression is 99.22.

<h3>What is an expression?</h3>

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication and division

The expression will be solved as:-

E = $({5 -\dfrac{10}{27}})^3$