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
A yard of fabric costs 22.99 how much will 2 feet costs
marshall27 [118]
\frac{22.99}{3ft} =  \frac{d}{2ft}  \\ \\  d=15.33
7 0
3 years ago
Read 2 more answers
Find the perimeter of the triangle with vertices ​A(negative 2​,2​,3​), ​B(4​,negative 4​,3​), and ​C(7​,6​,4​).
gayaneshka [121]

Answer:

P\approx 28.872\,\text{units}

Step-by-step explanation:

We are given coordinates of each of the vertices of the triangle ABC, hence we can use the distance formula to find the lengths of each of the side.

the distance formula is generally written as:

r = \sqrt{(x_1-x_2)^2+(y_1-y_2)^2+(z_1-z_2)^2}

for the side AB: A(-2,2,3) and B(4,-4,3)

AB = \sqrt{(-2-4)^2+(2-(-4))^2+(3-3)^2}

AB = \sqrt{(-6)^2+(6)^2+(3-3)^2}

AB = \sqrt{72}

for the side BC: B(4,-4,3) and C(7,6,4)

BC = \sqrt{(4-7)^2+((-4)-6)^2+(3-4)^2}

BC = \sqrt{110}

for the side CA: C(7,6,4) and A(-2,2,3)

CA = \sqrt{(7-(-2))^2+(6-2)^2+(4-3)^2}

CA = \sqrt{98}

Now we all the sidelengths:

to find the perimeter we need to just sum the three side lengths:

P = AB + BC + CA

P = \sqrt{72} + \sqrt{110} + \sqrt{98}

P\approx 28.872\,\text{units}

this is the perimeter of triangle ABC

6 0
3 years ago
If xy is rational, must x and y each be rational?
balu736 [363]
<span>Your answer is is simply,no x and y could have a common irrational factor. </span>
3 0
3 years ago
Can someone please solve this for me??!?
k0ka [10]

B is correct... Is that not right?

8 0
3 years ago
Read 2 more answers
Dan is a software salesman Y represent his total pay in dollars let X represent the number of copies English is fun he sells sup
notka56 [123]

Answer:

1. 80

2. 2400

Step-by-step explanation:

1. what is the change in Dan's total pay for each copy of math is fun he sells?

2. what is Dan's total pay if he doesn't sell any copies of math is fun?

Given

y=80x + 2400

When x=0

y=80(0)+2400

=0+2400

=2400

When x=1

y=80x + 2400

=80(1) + 2400

=80+2400

=2480

change in Dan's total pay for each copy of math is fun he sells is

= 2480 - 2400

=80

2. Dan's total pay if he doesn't sell any copies of math is fun?

y=80x+2400

When x=0

y=80(0)+2400

=0+2400

=2400

8 0
3 years ago
Other questions:
  • I'M BEGGING, SOMEONE PLEASE HELP ME WITH THIS!!!! I must get this done TODAY!!
    14·1 answer
  • The area of a circle is 88 square meters. What is the radius?
    5·1 answer
  • Show the ratios are equivalent by simplifying any 4 of them.
    13·1 answer
  • Which triangle always has only two sides the same length and one angle that measures 90°? A. acute scalene B. right isosceles C.
    6·1 answer
  • What fraction is equivalent to -3/7<br><br> A. 3/-7<br> B. -3/-7<br> C. -7/3<br> D. 7/3
    6·2 answers
  • Examine the given run chart or control chart and determine whether the process is within statistical control. If it is not, iden
    11·1 answer
  • What are the angles sizes
    11·1 answer
  • What is (567x237)x(467x939)<br> i will mark brainliest
    11·2 answers
  • Ava, Zoe and Logan went to the market to buy some presents for a friend's birthday. The three of them
    11·1 answer
  • SOMEONE PLEASE HELP ILL MARK AS BRAINLIEST AND GIVE 5 STARSSSSS
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!