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
NeX [460]
3 years ago
13

Find the perimeter of a triangle with sides measuring 10cm,12cm and 9cm

Mathematics
1 answer:
Novay_Z [31]3 years ago
7 0
<u><em>Perimeter of a triangle=A+b+c
10+12+9=33
Wish You good time studying!
</em></u><u><em></em></u><u><em></em></u><u><em></em></u>

You might be interested in
Which of the following is an appropriate measure of central tendency to apply to the following sorted list of professional wrest
Anna35 [415]
The measures of central tendency, fancy words for the middle, are

C. Mode
D. Mean
E. Median


7 0
2 years ago
Read 2 more answers
Please simplify the equation
ss7ja [257]
Simplify
= 6/(gf^4)

hope that helps
6 0
3 years ago
2. Given a quadrilateral with vertices (−1, 3), (1, 5), (5, 1), and (3,−1):
zlopas [31]
<h2>Explanation:</h2>

In every rectangle, the two diagonals have the same length. If a quadrilateral's diagonals have the same length, that doesn't mean it has to be a rectangle, but if a parallelogram's diagonals have the same length, then it's definitely a rectangle.

So first of all, let's prove this is a parallelogram. The basic definition of a parallelogram is that it is a quadrilateral where both pairs of opposite sides are parallel.

So let's name the vertices as:

A(-1,3) \\ \\ B(1,5) \\ \\ C(5,1) \\ \\ D(3,-1)

First pair of opposite sides:

<u>Slope:</u>

\text{For AB}: \\ \\ m=\frac{5-3}{1-(-1)}=1 \\ \\ \\ \text{For CD}: \\ \\ m=\frac{1-(-1)}{5-3}=1 \\ \\ \\ \text{So AB and CD are parallel}

Second pair of opposite sides:

<u>Slope:</u>

\text{For BC}: \\ \\ m=\frac{1-5}{5-1}=-1 \\ \\ \\ \text{For AD}: \\ \\ m=\frac{-1-3}{3-(-1)}=-1 \\ \\ \\ \text{So BC and AD are parallel}

So in fact this is a parallelogram. The other thing we need to prove is that the diagonals measure the same. Using distance formula:

d=\sqrt{(y_{2}-y_{1})^2+(x_{2}-x_{1})^2} \\ \\ \\ Diagonal \ BD: \\ \\ d=\sqrt{(5-(-1))^2+(1-3)^2}=2\sqrt{10} \\ \\ \\ Diagonal \ AC: \\ \\ d=\sqrt{(3-1)^2+(-5-1)^2}=2\sqrt{10} \\ \\ \\

So the diagonals measure the same, therefore this is a rectangle.

5 0
3 years ago
Two non-coplanar lines ? intersect
mario62 [17]
Never. If they are not on the same plane, then they cannot intersect because 2 lines and 1 point are always on a plane, in this case the original line, then a point in the middle to the point that creates the other line would be included, hence if they are non-coplaner then they cannot intersect. 
5 0
3 years ago
The area formed by a plane cutting through a solid perpendicular to its axis is a
kvasek [131]
<span>cross is my best answer</span>
8 0
3 years ago
Read 2 more answers
Other questions:
  • Factor 64a^2 - 48a + 9. <br> A(8a + 9)(8a - 1)<br> B(8a - 3)^2 <br> C(4a + 3)(16a - 3)
    8·2 answers
  • A football field measures 300 feet in length. It can also be expressed as approximately 5 7x 10miles. If the
    7·1 answer
  • An insured's roof cost $4,000 when installed 5 years ago. It has been damaged by hail and must be replaced. The new roof will co
    14·1 answer
  • There are 12 bags of apples on a market stall. The mean number of apples in each bag is 8. the table shows the number of apples
    7·1 answer
  • One more than three times a number is less than the number decreased by five. solve and graph
    12·1 answer
  • Between which of the following pairs of numbers, can a rational number be found? (answer can be more than one pair)
    10·1 answer
  • Find the value of x.......
    10·1 answer
  • Carl can wash 8 windows in an hour. How many windows can he was in 3 hours
    12·2 answers
  • What is the surface area of the rectangular pyramid?
    14·2 answers
  • Which phrase represents the meaning of the symbol ?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!