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
melamori03 [73]
3 years ago
8

Triangle ABC has a perimeter of 22cm.

Mathematics
2 answers:
Paha777 [63]3 years ago
4 0
First let's find the length of the last side. We can do this by adding AB and BC together, then subtracting this amount from the perimeter of Triangle ABC, 22 cm.
ABC - (AB + BC) ⇒ 22cm - (8cm + 5cm)
                                    22cm - 13cm = 9cm

The hypotenuse is always the longest side of a triangle, so we know that the side we figured out is the hypotenuse. Now we can use the Pythagorean Theorem to see whether the triangle is a right triangle.

Pythagorean Theorem: a² + b² = c², where a and b are legs and c is the hypotenuse.
If a² + b² do equal c², then the triangle is a right triangle.

8² + 5² = 9²
64 + 25 = 81
89 > 81

The triangle is not a right triangle, but we know that it is obtuse since a and b together are longer than c.
e-lub [12.9K]3 years ago
3 0

Answer:

No, ABC is not a right Angled triangle.

Step-by-step explanation:

Given AB = 8, BC = 5

Then AC = 22 - (8 + 5) = 22 - 13 = 9 cm

Using the converse of Pythagoras' identity

If the square of the longest side equals the sum of the squares of the other 2 sides then triangle is right.

AC² = 9² = 81

AB² + BC² = 8² + 5² = 64 + 25 = 89

81 ≠ 89, hence ΔABC is not right- angled

You might be interested in
Please Help Me Due Today!! Major points!!!
Pachacha [2.7K]

Answer:CASE #1 - Divergent and convergent one-way

residential streets to reduce direct through

routes impacting the neighborhood.

CASE #2 - Alternating one-way streets throughout a

portion of a grid system to gain safety

advantages of one-way operations.

CASE #3 - Creating a one-way couplet by paring a

residential street with a nearby thru street to

create a corridor for thru traffic

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
a circular oil slick is expanding at a rate of 2m^2/h. Find the rate at which it's diameter is expanding when it's radius is 1.5
aleksandrvk [35]

Answer:  \frac{4\pi}{3} \text{ meter per hour}

Step-by-step explanation:

The circular oil slick is expanding at a rate of  2 m^2/h

Let A be the area of the circular oil slick,

So, the changes in  A with respect to time (t),

\frac{dA}{dt} = 2

\frac{d(\pi r^2)}{dt} = 2

2\pi r\frac{dr}{dt} = 2

\frac{dr}{dt} = \frac{1}{\pi r}  

Also, the change in diameter with respect to time(t),

\frac{d}{dt} (2 r) = 2 \frac{dr}{dt}

\frac{d}{dt} (2 r) = 2 \times \frac{1}{\pi r}

\frac{d}{dt} (2 r) = \frac{2}{\pi r}

For r = 1.5 m,

\frac{d}{dt} ( 2 r)]_{r=1.5} = \frac{2}{\pi \times 1.5}=\frac{20}{\pi \times 15}=\frac{4\pi }{3}\text{ meter per hour}




7 0
2 years ago
If you do this ill give you a bunch of points please!!!!!!!
Zarrin [17]

a)

(59, 76) and (65, 100)

y - y1 = m(x - x1)

y - 100 = (100-76)/(65 - 59)(x - 65)

y - 100 = (24/6)(x - 65)

y - 100 = 4(x - 65)

y - 100 = 4x - 260

y = 4x - 160

b)

x = 90

y = 4x - 160

y = 4(90) - 160

y = 360 - 160

y = 200

200 chirps per minute

c)

y = 120

y = 4x - 160

120 = 4x - 160

280 = 4x

x = 70

70 degrees


5 0
3 years ago
HELP PLEASE I WILL GIVE BRAINIEST<br> Question 2<br> State the domain and range of the function.
larisa [96]
The domain of a function f(x) is a set of all values for which the function is defined. The range of is a set of all values that f takes.
5 0
3 years ago
What is the product of 2.52 and 3.4
ElenaW [278]
2.52 x 3.4

= (2.50 + 0.02)(3.00 + 0.40)

= 2.50 x 3.00 + 2.50 x 0.40 + 0.02 x 3.00 + 0.02 x 0.40

= 7.500 + 1.000 + 0.060 + 0.008

= 8.500 + 0.060 + 0.008

= 8.560 + 0.008

= 8.568
5 0
3 years ago
Other questions:
  • An airplane descends from 15,000 feet at a rate of 200 feet per second.
    12·2 answers
  • Select three ratios that are equivalent to <br> 4:3 <br> Choose 3 answers:
    5·2 answers
  • What is 4.3547 rounded to the nearest thousand
    6·1 answer
  • Ticket Prices for a Science museum are $18 for adults and $12 for students. If $162 is collected from a group of 12 people, How
    12·1 answer
  • 20% of all the children in a class are left handed.
    6·1 answer
  • HELP DUE SOON!<br><br> x = ?? degrees
    6·1 answer
  • Given Point A (3,-4) and Point B (8,6) on directed line segment AB, what is the y-coordinate of Point F
    11·1 answer
  • N the ordered pair (3, 1), the number 1 is the y-coordinate. true or false
    15·2 answers
  • $17,818 is invested, part at 11% and the rest at 6%. If the interest earned from the amount invested at 11% exceeds the interest
    5·1 answer
  • F(x)= -2x^2 - 5 and f(2)= -13<br><br> can someone solve this in steps please?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!