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Nostrana [21]
3 years ago
10

According to these three facts, which statements are true?

Mathematics
1 answer:
777dan777 [17]3 years ago
4 0

Answer:

cest trop facile mes mois jai besoin d'aide alor quesque quil faut faire di mois

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Need help asap !!!!!
Romashka [77]

Answer:

The answer is x = 5.

Step-by-step explanation:

Given:

Δ ABC is an Isosceles triangle with AB = CA

   m∠ ABC = ( 6x + 4 )°

   m∠ BAC = 73°

   m∠ BCA = ( 8y - 7 )°

To Find:

x = ?

Solution:

Properties of an Isosceles Triangle.

  1. Base angles or two angles are equal.
  2. Any two sides are equal.

Here , Δ ABC is an Isosceles triangle with AB = CA

∴  m∠ BAC = m∠ BCA

73= 8y-7\\8y=73+7\\8y=80\\y=\frac{80}{10} \\y=10

∴      m∠ BCA = ( 8y - 7 )°

                       = 8 × 10 - 7

       m∠ BCA  = 73  Which is same as ∠ CAB

Property of a Triangle is Sum of the measures of the angle of a triangle is 180°.

\angle ACB + \angle CAB + \angle CBA = 180

Substituting the values we get,

73 + 73 + (6x+4) = 180\\6x+4=180-146\\6x=34-4\\6x=30\\x=\frac{30}{6} \\x=5\\

The answer is x = 5.

7 0
3 years ago
Giải phương trình y'=0 biết:y=x^4
Mila [183]

Answer:

0.

Step-by-step explanation:

1) y'=(x⁴)'=4x³;

2) ∡ y'=0, ⇒ 4x³=0; ⇒ x=0.

7 0
2 years ago
What is x^2+3x-28 factored
kap26 [50]

Answer: x^(2)-3x-28=0

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
On Monday the temperature was 3 degrees below 0 on Tuesday the temperature was 7 degrees what was the change in temperature
PIT_PIT [208]

Answer:

10 degrees

Step-by-step explanation:

7 - (-3) = 7+3 = 10 degrees

6 0
2 years ago
6x-4=2x+8 What do i do here​
Charra [1.4K]

Answer:

x = 3

Step-by-step explanation:

6x - 4 = 2x + 8

6x - 2x = 8 + 4

4x = 12

x = 12/4

x = 3

4 0
2 years ago
Read 2 more answers
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