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
MakcuM [25]
2 years ago
8

Offering brainliest if answered with explanation

Mathematics
2 answers:
kumpel [21]2 years ago
7 0

Answer:

Step-by-step explanation:

we know that the 3 sides add up to the perimeter of 18cm. We can use this to find the length of the 3rd side, CA.  

AB + BC + CA = 18

7 + 3 + CA = 18

10 + CA = 18

CA = 8

The pythagorean theorem states that in a right triangle a2 + b2 = c2, where c is the length of the hypotenuse (the longest side opposite to the right angle) and a and b are the lengths of the other two sides.  

In this problem we can replace a with 7, the length of AB, b with 3, the length of BC, and c with 8, the length of CA.  

a2 + b2 = c2

72 + 32 = 82

49 + 9 = 64

58 = 64

Since the equation is not true, we can deduce that ABC is NOT a right triangle start, we know that the 3 sides add up to the perimeter of 18cm. We can use this to find the length of the 3rd side, CA.  

AB + BC + CA = 18

7 + 3 + CA = 18

10 + CA = 18

CA = 8

The pythagorean theorem states that in a right triangle a2 + b2 = c2, where c is the length of the hypotenuse (the longest side opposite to the right angle) and a and b are the lengths of the other two sides.  

In this problem we can replace a with 7, the length of AB, b with 3, the length of BC, and c with 8, the length of CA.  

a2 + b2 = c2

72 + 32 = 82

49 + 9 = 64

58 = 64

Since the equation is not true, we can deduce that ABC is NOT a right triangle start, we know that the 3 sides add up to the perimeter of 18cm. We can use this to find the length of the 3rd side, CA.  

AB + BC + CA = 18

7 + 3 + CA = 18

10 + CA = 18

CA = 8

The pythagorean theorem states that in a right triangle a2 + b2 = c2, where c is the length of the hypotenuse (the longest side opposite to the right angle) and a and b are the lengths of the other two sides.  

In this problem we can replace a with 7, the length of AB, b with 3, the length of BC, and c with 8, the length of CA.  

a2 + b2 = c2

72 + 32 = 82

49 + 9 = 64

58 = 64

Since the equation is not true, we can deduce that ABC is NOT a right triangle

natima [27]2 years ago
4 0

Answer:

ABC is not a right triangle.

Step-by-step explanation:

The perimeter of a triangle is the sum of all its sides(easier to see if you draw it):

P = AB + BC + AC

We can substitute the values we have:

18 = 7 + 3 + AC

18 = 10 + AC

AC = 8

In a right triangle, the hypotenuse is always the largest side and is equal to the square root of the squares of the legs by the pythagorean theorem(a^2 + b^2 = c^2). Our largest side is 8, so we would set that as equal to the hypotenuse:

8^2 = 7^2 + 3^2

64 = 49 + 9

64 = 58

64 is not equal to 58, so triangle ABC is not a right triangle.

You might be interested in
Bettina spent $75 on 5 shirts that each cost the same price. three of the shirts were red. which expression represents the total
andrezito [222]
The answer is C. 75/5 × 1/3
4 0
3 years ago
Read 3 more answers
Brewsky's is a chain of micro-breweries. Managers are interested in the costs of the stores and believe that the costs can be ex
Fynjy0 [20]

Answer:

The answer is "88.9%"

Step-by-step explanation:

The Variance percentage indicates through the REgression equation but, the R-Square, it becoming the determination coefficient. 88.871% of the variance could be explained according to the above results.

3 0
2 years ago
The hypotenuse of a 45°-45°-90° triangle measures 128 cm. A right triangle is shown. The length of the hypotenuse is 128 centime
Aleks [24]

Answer:

64√2 or 64 StartRoot 2 EndRoot

Step-by-step explanation:

A 45-45-90 traingle is a special traingle.  Let's say one of the leg of the triangle is x. The other one is also x because of the isosocles triangle theorem.  Therefore, using the pytagorean theorem, you find that x^2+x^2=c^2.  2(x)^2=c^2.  You then square root both sides and get c= x√2.  

Therefore, the two legs are x and the hypotenuse is x√2.  x√2=128 because the question says that the hypotenuse is 128.  Solve for x by dividing both sides by √2.  X=128/√2.  You rationalize it by multiplying the numberator and denominator of the fraction by √2.  √2*√2= 2.

X=(128√2)/2= 64√2 cm.

Since X is the leg, the answer would be 64√2

3 0
3 years ago
Read 2 more answers
(a) The parametric equations x = f(t) and y = g(t) give the coordinates of a point (x, y) = (f(t), g(t)) for appropriate values
Gnesinka [82]

Answer:

Step-by-step explanation:

a). Given a parametric equation, we are describing a set of coordinates based on the value of t. The variable t is called the parameter.

b) we have the following equations. x=t y=t^2, so in order for us to know where the object is at t=t' we must replace t with the specific value t'. Hence, when t=0 the object is at (0,0^2) = (0,0) (the origin). When t=6, the object is at (6,6^2) = (6,36).

c). To eliminate the parameter, we replace the parameter in one equation by using the second equation. Recall that we have that x=t. Then, by replacing in the second equation, we have the following

y=t^2 = (x)^2 = x^2

where x\geq 0

5 0
2 years ago
Sonji has $5.25 in nickels and dimes.The coin value can be modeled by the equation 0.10 d plus 0.05 n equals 5.25, where d repre
Sedaia [141]

Answer:

Im not sure but i think it is 42

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Other questions:
  • Can you help me please A, B, C Or D?
    14·2 answers
  • can you think of a real life situation where you have to expand things out before making it easier to finish​
    12·1 answer
  • A car leaves Orlando, FL and travels east toward West Palm Beach. The
    8·2 answers
  • An eight-sided die is rolled and a coin is tossed. What is the probability of landing on an even number and getting heads?
    10·1 answer
  • Solve the system of equations below algebraically 2x-3y=8 4x+2y= 10
    11·1 answer
  • Question: <br> Find the Vertex<br> 3. y= x*2+ 18х - 75<br><br> a) (-6,9)<br> b) (9,-6)<br> c) (9,6)
    15·2 answers
  • Help me plssssssss :))
    7·1 answer
  • Answer this question
    6·1 answer
  • A blender was originally sold for $90 and has been marked down to $79.20. What is the percentage of discount for the blender
    7·1 answer
  • A wheel has a radious of 50cm. How many times would the wheel go around if it rolled for 10km
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!