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
Advocard [28]
3 years ago
10

Find the semi perimeter of a triangle with sides 9cm 12 cm and 30 cm

Mathematics
1 answer:
alexgriva [62]3 years ago
7 0

Answer:

<h2>25.5 cm</h2>

Step-by-step explanation:

<h3>s =  \frac{a + b + c}{2}</h3>

=  \frac{9 + 12 + 30}{2}cm \\   = \frac{51}{2}cm  \\ 25.5cm

You might be interested in
Identity each pair of angles
ElenaW [278]
Do you have a protractor? You’ll need one measure the angles.
5 0
4 years ago
Read 2 more answers
Write the equation of a line that is perpendicular to the given line and that passes through the given point.
Firlakuza [10]

Answer:

y - 3 = (5/3)(x - 6)

Step-by-step explanation:

The usual first step is to determine the slope of the given line.

In this case the slope is -3/5.

A line perpendicular to this given line would have a slope of 5/3, which is the negative reciprocal of -3/5.

This new line goes thru (6, 3) and has a slope of 5/3.  Thus, the equation of the line in point-slope form is

y - 3 = (5/3)(x - 6)

Double check that you have copied the problem down correctly.  The slope of the line represented by -3x - 5y = 17 is neither 2 nor -2; it is -3/5, and so the slope of a line perpendicular to -3x - 5y = 17 is +5/3.

7 0
3 years ago
Solve 4x = 2x–8<br> The solution is x =
saveliy_v [14]

Answer:

-4

Step-by-step explanation:

you would take your 2x and subtract it from the 4x to get 2x = -8. after that you just divde both sides by 2 to get x=-4

8 0
3 years ago
Read 2 more answers
WHOEVER HELPS GETS BRAINLIEST
Andre45 [30]
The answer is B.......
7 0
3 years ago
The total price x items costing $4.35 each
lozanna [386]
Ummmm the answer is 4.35x
3 0
4 years ago
Other questions:
  • When deriving the quadratic formula by completing the square, what expression can be added to both sides of the
    6·2 answers
  • A toddler takes off running down the sidewalk at 270 ft/min. One minute later, a worried mother runs after the child at 580 ft/m
    7·1 answer
  • Emily is dividing 15 pounds of jelly beans into 3 4 lb. Bags. How many individual bags will she need for all of the jelly beans?
    8·1 answer
  • How to solve -c(11c + 4)
    10·2 answers
  • Solve the system of equations. y=3x-1 and y=-2x+9. PLEASE SHOW WORK
    6·1 answer
  • Find the value of y:<br><br> 8y(4y+24)
    15·2 answers
  • How many seconds until the ball touches the ground
    5·1 answer
  • Incase you need to answer some questions, how was your day? :))
    12·2 answers
  • HELP!!Luke sells pins for $4 each and rings for $6 each. Complete the equation which determines the number of pins x and the num
    14·1 answer
  • Simplify the Equation Below Pls answer :(<br> 8x - 7 + 6x + 3
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!