All categories

3 years ago

The perimeter of a triangle is 22 cm. if its two sides measure 9cm and 6cm, find the length of the third side?

Mathematics

2 answers:

kirill [66]3 years ago

5 0

Answer:

Step-by-step explanation:

perimeter of a triangle is the addition of all sides

22 - ( 9+6)

22 - 15

denis-greek [22]3 years ago

3 0

Answer: 7cm

Step-by-step explanation:

The perimeter of a triangle is calculated by adding the length of the 3 sides together. Let the third side be x , then

x + 9 + 6 = 22

x + 15 = 22

Subtract 15 from both sides , that is

x = 22 - 15

x = 7

Therefore : the third side is 7cm

You might be interested in

Can anyone help me with this question please?

kvv77 [185]

Answer:

you didn't add a question

Step-by-step explanation:

3 0

3 years ago

What is it's momentum?

Aliun [14]

$\huge \boxed{ \sf Solution}$

Mass of the truck (m) = 30000 Kg
Velocity (v) = 25 m/s
Let the momentum be p.
We know, momentum = mass × velocity
Therefore, the momentum of the truck (p)
= mv
= (30000 × 25) Kg m/s
= 750000 Kg m/s

Answers:

Variable : m, v, p

Equation : p = mv

Answer: The momentum of the truck is 750000 Kg m/s.

Hope you could understand.

If you have any query, feel free to ask.

5 0

2 years ago

Read 2 more answers

Please help me. Noura is redecorating her house. She needs to work out the area of the wall around her triangular window in orde

Vinvika [58]

Answer:

a. 277.3 m²

b. $307.86

Step-by-step explanation:

a. Area of the wall to be painted = area of rectangle - area of triangle

= L × W + ½×a×b×sin θ

L = 17 m

W = 14 m

a = 8.7 m

b = 9.5 m

θ = 72°

Plug in the values into the equation

Area of the wall = (17×14) + (½*8.7×9.5×sin 72)

Area of the wall = 238 + 39.3024105

Area of the wall to paint ≈ 277.3 m²

b. 20 liters of paint of 1 container cost $21.99

If 1 liter of paint covers 1m², therefore,

277.3 m² will need = 277.3 × 1 = 277.3 liters of paint.

20 liters = 1 container of paint

277.3 liters = 277.3/20 = 13.865 ≈ 14 containers

1 container = $21.99

14 containers = 21.99 × 14 = $307.86

8 0

2 years ago

Which number(s) below belong to the solution set of the inequality? Check all that apply. 3x > 96 A. 32 B. 27 C. 11 D. 16 E.

Ksenya-84 [330]

If 3x>96, dividing both sides by 3 we get that x>32, therefore only E is an acceptable answer

4 0

3 years ago

Read 2 more answers

Need help for number 4 please

Marina CMI [18]

Answer:

Step-by-step explanation:

4) ΔSTW ≅ ΔBFN . So, corresponding parts of congruent triangles are congruent.

a) BN = SW d) m∠W = m∠N

BN = 9 cm m∠W = 82°

b) TW = FN e) m∠B = m∠S

TW = 14 cm m∠B = 67°

c) BF = ST f) m∠B + m∠N + m∠F = 180°

BF = 17 cm 67 + 82 + m∠F = 180

149 + m∠F = 180

m∠F = 180 - 149

m∠F = 31°

5) ΔUVW ≅ ΔTSR

UV = TS

12x - 7 = 53

12x = 53+7

12x = 60

x = 60/12

x = 5

UW =TR

3z +14 = 50

3z = 50 - 14

3z = 36

z = 36/3

z = 12

SR =VW

5y - 33 = 57

5y = 57 + 33

5y = 90

y = 90/5

y = 18

7) ΔPHS ≅ ΔCNF

∠C = ∠P

4z - 32 = 36

4z = 36 + 32

4z = 68

z = 68/4

z = 17

∠H = ∠N

6x - 29 = 115

6x = 115 + 29

6x = 144

x = 144/6

x = 24

∠P + ∠H + ∠S = 180 {Angle sum property of triangle}

36 +115 + ∠S = 180

151 + ∠S = 180

∠S = 180 - 151

∠S = 29°

∠F = ∠S

3y - 1 = 29

3y = 29 + 1

3y = 30

y = 30/3

y = 10

8) ΔDEF ≅ ΔJKL

DE = 18 ; EF = 23

DF = 9x - 23

JL= 7x- 11

DF = JL {Corresponding parts of congruent triangles}

9x - 23 = 7x - 11

9x - 7x - 23 = -11

2x - 23 = -11

2x = -11 + 23

2x = 12

x = 12/2

x = 6

JK = DE {Corresponding parts of congruent triangles}

3y - 21 = 18

3y = 18 + 21

3y = 39

y = 39/3

y = 13

4 0

3 years ago