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Nostrana [21]
4 years ago
13

A, B and C form the vertices of a triangle. BC = 6.9cm and ∠ CBA = 137°. Given that the area of the triangle is 12.6cm^2, calcul

ate the perimeter of the triangle rounded to 1 DP.
Mathematics
1 answer:
Anon25 [30]4 years ago
8 0

Answer:

9304t5492860534795782437904209872423897897458790532870925879048790248309787904879525492898977042247980424372

Step-by-step explanation:

assho;le

You might be interested in
a committee has eleven members. there are 3 members that currently serve as the boards chairman, ranking members, and treasurer.
miss Akunina [59]

Answer:

\frac{1}{990}

Step-by-step explanation:

<u>The full question:</u>

<em>"A committee has eleven members. there are 3 members that currently serve as the boards chairman, ranking members, and treasurer. each member is equally likely to serve in any of the positions. Three members are randomly selected and assigned to be the new chairman, ranking member, and treasurer. What is the probability of randomly selecting the three members who currently hold the positions of chairman, ranking member, and treasurer and reassigning them to their current​ positions?"</em>

<em />

<em />

The permutation of choosing 3 members from a group of 11 would be:

P(n,r) = \frac{n!}{(n-r)!}

Where n would be the total [in this case n is 11] & r would be 3

Which is:

P(11,3) = \frac{11!}{(11-3)!}=\frac{11!}{8!}=11*10*9=990

So there are total of 990 possible way and there is ONLY ONE WAY for them to be reassigned. Hence the probability would be:

1/990

8 0
4 years ago
Find the measure of the missing angles.
igomit [66]

Answer:

f = 26

d=112

e=42

Step-by-step explanation:

as far as what i can see, the first given angle is 112 and the second angle is 42.

These two angles are the angles on one straightline, therefore the missing angle will be 180 - 112 - 42 = 26 (Supplementary angle). This angle is not required and it is the missing angle on the left hand side. However, this angle should be equal to that of f (Opposite angle).

By the same way, d and e are the two opposite angles for 112 and 42, respectively.

5 0
2 years ago
Plssss help meeeee!!!!!!!!!!!!!!!!!!!
igomit [66]

Answer:

b = -30

Step-by-step explanation:

-b/5 - 27 = -21

~Add 27 to both sides

-1/5b = 6

~Multiply -5 to both sides

b = -30

Best of Luck!

8 0
3 years ago
The height of a triangle is 15cm, the base is 40cm and the other two side are 25cm.
morpeh [17]
The formula for the area of a triangle is base*height/2. So lets input the number.

15*40=600/2=300 cm2
6 0
3 years ago
Simplify -1-18<br> -<br> (18)<br> O - |18|<br> 0-18<br> O 18
sertanlavr [38]

Answer:

simplify -1-18

Step-by-step explanation:

Subtract  18  from −1

− 19

6 0
3 years ago
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