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
zubka84 [21]
3 years ago
10

Triangle def has vertices d(2,-5) e(6,-1) and f(5,6) verify that def is isosceles

Mathematics
1 answer:
goldfiish [28.3K]3 years ago
4 0
To prove that the given triangle is an isosceles, two of its sides must have equal lengths.

Between D(2,-5) and E(6,-1):
d = √(6 - 2)² + (-1 - ⁻5)² = 4√2

Between E(6,-1) and F(5,6):
d = √(5 - 6)² + (6 - ⁻1)² = 5√2

Between D(2,-5) and F(5,6)
d = √(5 - 2)² + (6 - ⁻5)² = √130

<em>Since there are no equal lengths, the triangle is NOT an isosceles triangle.</em>

The bisector of angle F is a line segment from vertex F to the midpoint of line DE.

Midpoint: x = (2+6)/2 = 4; y = (-5+-1)/2 = -3
The midpoint is at (4,-3).
The equation of the line follows the point-slope formula:
y - y₁ = [(y₂ - y₁)/(x₂ - x₁)](x - x₁)
Substituting using points (5,6) and (4,-3)
y - 6 = [(⁻3 - 6)/(4 - 6)](x - 5)
y - 6 = (9/2)(x - 5)
2(y - 6) = 9(x - 5)
2y - 12 = 9x - 45
<em>2y - 9x = -33 </em>

You might be interested in
t is commonly assumed that babies are equally likely to come as either a boy or a girl. This is not true. Actually, about 51.3%
eduard

Answer:

The probability they have one boy and one girl = 0.50 = 50 %

Step-by-step explanation:

Here the family has two children, we need to find what is the probability they have one boy and one girl.

Probability for babies are boys = 51.3% = 0.513

Probability for babies are girls = 1 - 0.513 = 0.487

The probability they have one boy and one girl = 1 -  probability that they have two boys - probability that they have two girls

The probability they have one boy and one girl = 1 - 0.513² - 0.487² = 0.499 = 0.50

The probability they have one boy and one girl = 0.50 = 50%

7 0
3 years ago
For a given input value aaa, the function hhh outputs a value bbb to satisfy the following equation. 3a-5=-4b+13a−5=−4b+13, a, m
Anastaziya [24]

Answer:

5

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Evaluate f(x)=5•3 ( to the power of x) for x=4
GenaCL600 [577]
The answer is 50625 because 5*3 is 15 and take that to the power of 4
5 0
3 years ago
Read 2 more answers
. Osteen has 32 marbles in his collection. 18 of his marbles are red, four are blue, and the rest are
nalin [4]

Answer: B

Explanation:  

32 marbles in total.

18 red marbles

4 blue marbles

10 green marbles.

You are asked what part of Osteen's marbles are red?

Probability = number of possible outcomes/total number of out outcomes.

P(Red) = 18/32 = 9/16

Both, 18 and 32 are divisible by 2 which gives 9/16. Since 9/16 cannot be reduced any further, we live it as it is. If you wanted to plug this into a calculator that would give 0.5625 which is 56.25% of Osteen's marbles are red.

P(Blue) = 4/32 = 1/8. 1/8 = 0.125 which 12.5% of his marbles are blue.

P(Green) = 10/32 = 5/16. 5/16= 0.3125 which 31.25 of his marbles are green. When you add 0.5625 + 0.125 + 0.3125 = 1 which is 100%. All probabilities add up to 1.

Hope this elaborate explanation helps.

6 0
2 years ago
Is 58 a prime or composite number
Nata [24]
58 is a composite number because it has more than 3 factors.
Composite numbers are numbers that has 3 or more factors.
Prime numbers are numbers that only has 2 factors.
3 0
3 years ago
Other questions:
  • Help again 3/4 + 3/6 is what
    13·2 answers
  • martina is on her way home in her car. she has driven 30 miles so far, which is two thirds of the way home. what is the total le
    14·1 answer
  • Which one of these statistics is unaffected by outliers?
    11·1 answer
  • Given: m∥n , m∠1=65∘ , m∠2=60∘ , and BD−→− bisects ∠ABC . Prove: m∠6=70∘
    6·1 answer
  • Hal, Zelda, Maya, and Jason each recorded the height and age of five classmates. They used the data to create the tables below.
    14·2 answers
  • What is the decibel level of the radio with intensity 10−7 watts per square inch? Use a logarithmic model to solve.
    15·1 answer
  • Please help me! thanks so much!
    14·1 answer
  • Identify the variables: 8c * 7c - 10p + 12
    6·1 answer
  • 9.
    11·1 answer
  • HELLPPPPP MEEEEEEEEEEE
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!