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garik1379 [7]
3 years ago
9

Herrons formula:2S=a+b+c solve for b

Mathematics
2 answers:
True [87]3 years ago
5 0
Minus a and minus c from both sides

2S-a-c=b
b=2S-a-c
Firlakuza [10]3 years ago
4 0

Answer:

The value of the formula for b is 2S-a-c=b.

Step-by-step explanation:

Consider the provided formula.

2S=a+b+c  

We need to solve the formula for b.  

Subtract both sides by a.

2S-a=a-a+b+c

2S-a=b+c

Subtract both sides by c.

2S-a-c=b+c-c

2S-a-c=b

Hence, the value of the formula for b is 2S-a-c=b.

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8 0
3 years ago
Which of the following(s) is true of a rectangle?
arsen [322]
<h2>Explanation:</h2>

Let's take a look at all of our options.

A. it is also a square

  • A rectangle is NOT <em>always </em>a square because a square has congruent sides, so that means all four of its sides are <em>always </em>equal.
  • A rectangle <em>can </em>be a square but it can also not be a square, so therefore A cannot be an option because it is not always true about a rectangle.

B. the sum of its angle measures is 360

  • This is true because every quadrilateral's angle measures will add up to 360 degrees, no matter what. This is like how a triangle's angle measures always add up to 180 degrees.
  • B is an option because it is an ALWAYS true statement.

C. it has four congruent angles

  • A rectangle always has 90 degree angles, giving it its shape.
  • Since a rectangle always has the same-degree angles, that means that it DOES have four congruent angles.
  • C is also an option because it is always true.

D. it has four congruent sides

  • A rectangle does not ALWAYS have four congruent sides. Say for example a rectangle has a longer length than its width.
  • A square has four congruent sides, but a rectangle is not always a square, therefore this option is not applicable for a rectangle since it is not always true.
<h2>Answers:</h2>

B and C are always true of a rectangle.

7 0
3 years ago
Read 2 more answers
PLSS HELP ILL MARK BRAINLEST AND ILL GIVE 90 POINTS
Zigmanuir [339]

Answer:

umm? u forgot to add the composite figure lol

Step-by-step explanation:

:)

5 0
3 years ago
Read 2 more answers
If 2x + 5 = -25 and -3m - 6 = 48, what is the product of x and m?
strojnjashka [21]
X=-10 m= 6 that is what I think
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3 years ago
The value of t can be determined by using the expression 2.75s. Which table represents the relationship between the values of t
strojnjashka [21]

Answer:i know it's D

7 0
3 years ago
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