1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Charra [1.4K]
3 years ago
5

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:

  • brainly.com/question/725998
  • brainly.com/question/7128279

#LearnwithBrainly

You might be interested in
Pls help, easy geometry question
Lemur [1.5K]

x^2 + y^2 + 2x - 6y + 1 = 0

x^2 +2x + 1 + y^2 - 6y = 0

x^2 + 2( x × 1) + 1^2 + y^2 - 2(y×3) + 3^2 -3^2 =0

(x+1)^2 + (y-3)^2 = 3^2

comparing with circle equation

(x-a)^2 + (y - b)^2 = r^2

where (a , b) is centre of circle.

so we get center of circle is

(-1, 3)

3 0
3 years ago
Read 2 more answers
If the CPI (consumer price index) of 141 increased 8.3 % this year. What was the end of year CPI?
DENIUS [597]

If the CPI increased by 8.3%, therefore this means that there was a fractional increase of 0.083. So amount increased is:

 

CPI increase = 141 * 0.083 = 11.703

 

Therefore the end of year CPI is the sum of the original and the increase:

 

end of year CPI = 141 + 11.703 = 152.703

 

Answer:

152.703

4 0
3 years ago
Given that OA = 2x + 9y, OB = 4x + 8y and CD = 4x - 2y, explain the geometrical relationships between the straight lines AB and
Step2247 [10]

Answer:

The geometrical relationships between the straight lines AB and CD is that they have the same slope

Step-by-step explanation:

Given

OA = 2x + 9y

OB = 4x + 8y

CD = 4x - 2y

Required

The relationship between AB, CD

Since AB is a straight line and O is the origin, then:

AB = (c - a)x + (d - b)y

Where:

OA = ax + by ====> OA = 2x + 9y

OB = cx + dy ====> OB = 4x + 8y

This implies that:

a =2      b = 9     c = 4   d = 8  

So:

AB = (c - a)x + (d - b)y

AB = (4 - 2)x + (8 - 9)y

AB = 2x  -y

So, we have:

AB = 2x  -y

CD = 4x - 2y

Calculate the slope (m) of AB\ and\ CD

m = \frac{Coefficient\ of\ y}{Coefficient\ of\ y}

For AB

m_1 = \frac{-1}{2}

m_1 = -\frac{1}{2}

For CD

m_2 = \frac{-2}{4}

m_2 = \frac{-1}{2}

m_2 = -\frac{1}{2}

By comparison:

m_1 = m_2 = -\frac{1}{2}

This implies that both lines have the same slope

8 0
3 years ago
How do you find the rate of change in a graph
Anni [7]
To find the unit rate, divide the numerator and denominator of the given rate by the denominator of the given rate
6 0
3 years ago
Read 2 more answers
What is the Greatest Common Factor of x4 and x3? (1 point)
denis-greek [22]
The greatest common factor of both x^4 and x^3 would be x^3, since the largest number of X variables that you can evenly take out between both terms is x^3 or x cubed.
4 0
3 years ago
Read 2 more answers
Other questions:
  • Stella is renting a car for a business trip. The car rental agency charges a flat rate of $60 plus $0.50 per mile for every mile
    12·1 answer
  • The digits 1, 2, 3, 4, 5, 6, and 7 are randomly arranged to form a? three-digit number. ? (digits are not? repeated.) find the p
    15·1 answer
  • Will mark brainliest, 60 points
    13·2 answers
  • When a figure is translated on a coordinate grid, what conclusion can you draw from the pre-image and image?
    10·2 answers
  • What is the simplest for of the fraction 464/24?<br>(I'LL MARK U BRAINLIEST!)
    14·1 answer
  • The average housecat sleeps about 2/3 of the day. Most people sleep about 1/3 of a day. Do housecats or people sleeper a greater
    12·1 answer
  • Math help pleaseeeeeeeeeeeeeeeeeeeeeeee
    11·1 answer
  • Line v has a slope of –8/7. Line W is perpendicular to V. What is the slope of line w?
    14·1 answer
  • Please help me you must be absolutely sure.
    9·1 answer
  • PLS HELP ASAP I DONT HAVE TIME AND IT ALSO DETECTS IF ITS RIGHT OR WRONG
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!