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SIZIF [17.4K]
3 years ago
7

(5x - 7) + (10x 7) = 180

Mathematics
1 answer:
goldfiish [28.3K]3 years ago
4 0
15x=180
x=12

hope this helps
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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
PLZ HELP QUICK!!
Amiraneli [1.4K]

Answer:

2205

Step-by-step explanation:

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3 years ago
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2/9 long division showed
SIZIF [17.4K]

recall that a/b to decimal is just a ÷ b, so 2/9 is just 2 ÷ 9.

check the picture below.

3 0
3 years ago
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How does the value of log Subscript 2 Baseline 100 compare with the value of Log Subscript 6 Baseline 20?.
attashe74 [19]

You can use the change of base formula to get

\log_2(100) = \frac{\log(100)}{\log(2)} \approx 6.643856

and also

\log_6(20) = \frac{\log(20)}{\log(6)} \approx 1.671950

In general, the change of base formula is

\log_b(x) = \frac{\log(x)}{\log(b)}

8 0
2 years ago
To prove triangles similar, we only need to prove corresponding angles congruent OR corresponding sides are proportional. Howeve
ad-work [718]

Answer:

we can proove by ASA congruence or SAS congruence rule

6 0
3 years ago
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