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
Liono4ka [1.6K]
3 years ago
12

Maths help PLZZ!!!

Mathematics
1 answer:
Slav-nsk [51]3 years ago
6 0

Triangle ABC is an isosceles triangle.

Solution:

Given data:

∠ABC = 70° and ∠ACD = 55°

<em>If two parallel lines are cut by a transversal, then alternate interior angles are congruent.</em>

m∠BAC = m∠ACD

m∠BAC = 55°

<em>Sum of the angles in a straight line add up to 180°.</em>

m∠ACD + m∠ACB + m∠ABC = 180°

55° + m∠ACB + 70° = 180°

m∠ACB + 125° = 180°

Subtract 125° from both sides, we get

m∠ACB = 55°

In triangle ABC,

∠BAC = 55° and ∠ACB = 55°

∠BAC = ∠ACB

Two angles in the triangle are equal.

Therefor triangle ABC is an isosceles triangle.

You might be interested in
Triangle 1 is a scale drawing of Triangle 2, as shown below.
Elan Coil [88]
You need to show us what the triangle is
4 0
2 years ago
Read 2 more answers
Find the TWO integers whos product is -12 and whose sum is 1<br>​
julsineya [31]

Answer:

\rm Numbers = 4 \ and \ -3.

Step-by-step explanation:

Given :-

The sum of two numbers is 1 .

The product of the nos . is 12 .

And we need to find out the numbers. So let us take ,

First number be x

Second number be 1-x .

According to first condition :-

\rm\implies 1st \ number * 2nd \ number= -12\\\\\rm\implies x(1-x)=-12\\\\\rm\implies x - x^2=-12\\\\\rm\implies x^2-x-12=0\\\\\rm\implies x^2-4x+3x-12=0\\\\\rm\implies x(x-4)+3(x-4)=0\\\\\rm\implies (x-4)(x+3)=0\\\\\rm\implies\boxed{\red{\rm x = 4 , -3 }}

Hence the numbers are 4 and -3

5 0
3 years ago
Which expression gives the distance between the points (5, 1) and (9, -6)?
Vesna [10]
So the distance formula: d = rad (x2 - x1)^2 + (y2 - y1)^2
it doesn't matter what order you do, you just have to make sure it's a y coordinate for y and an x coordinate for x.
rad (9-5)^2 + ((-6)-1)^2
rad 4^2 + (-7)^2
rad 16 + 49
rad 65
4 0
3 years ago
Read 2 more answers
Evaluate the algebraic expression 18 + (- 31) =
frosja888 [35]

Answer:

-13

Step-by-step explanation:

8 0
3 years ago
The number pi goes on forever with no repeating pattern; therefore, it is rationa
cricket20 [7]
No 
it is irrational for that reason - it goes on without bound
3 0
3 years ago
Other questions:
  • Help me and does anyone like kpop
    8·2 answers
  • Which equation best represents this simulation? The number 88 is equal to a number divided by 11
    5·1 answer
  • Please answer it now in two minutes
    5·2 answers
  • The areas of two similar rectangles are 192 cm2 and 363 cm2. What is the similarity ratio of the two rectangles?
    6·2 answers
  • Make y the subject of the formula.
    12·2 answers
  • PLEASE HELP WILLLLLL GIVE BRAINLIEST!
    8·2 answers
  • 3 divided by -125<br><br> pls if you help me out. , you'll get 48 points
    15·2 answers
  • An ice cream stand offers four flavors:
    5·1 answer
  • What the image of (- 6, 5) after a reflection over the line y = x ?
    15·1 answer
  • Add these fractions 5/7 + 2/7 is it to 3 or
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!