I need to know the answer to this question.

What is the length of side BC of the triangle? Enter your answer in the box. units Triangle A B C with horizontal side B C. Vert

harina [27]

Answer:

The length of BC = 28 units

Step-by-step explanation:

* In triangle ABC

∵ Angles B and C are congruent

∴ m∠B = m∠C

* In any triangle if two angles are equal in measure, then the triangle is isosceles means the two sides which opposite to the congruent angles are equal in length

∴ AB = AC

∵ AB = 4x - 7

∵ AC = 2x + 7

∴ 4x - 7 = 2x + 7 ⇒ collect like terms

∴ 4x - 2x = 7 + 7

∴ 2x = 14 ⇒ divide both sides by 2

∴ x = 14 ÷ 2 = 7

* Now we can find the length of BC

∵ The length of BC = 4x ⇒ substitute the value of x

∴ The length of BC = 4 × 7 = 28 units

6 0

3 years ago

What is 129.392 rounded to nearest Ten?

Stels [109]

$\huge\bold\color{purple}{Answer:}$

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Explanation:

To round 129.392 to the nearest tenth consider the hundredths’ value of 129.392, which is 9 and equal or more than 5. Therefore, the tenths value of 129.392 increases by 1 to 4.

129.392 rounded to the nearest tenth = 129.4

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 $\huge\bold\color{purple}{Hope \: it \: helps!}$ 

6 0

3 years ago

Read 2 more answers

an odd interger can be represented by the expression n+ 2 where n is any odd integer find three consecutive odd intergerss that

Katarina [22]

Answer:

-15,-13,-11

n + (n+2) + (n+4) = -51

3n + 6 = -51

3n = -57

n = -19

-19,-17,-15

Step-by-step explanation:

5 0

3 years ago

Last year’s spell-a-thon spelling test for a first grade class had 15% more words with four or more letters than this year‘s spe

andreyandreev [35.5K]

Yes the answer is 25%

8 0

3 years ago

Work out the sum of the interior angles of any quadrilateral

goldenfox [79]

Answer:

19

Step-by-step explanation:

5 0

3 years ago