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stepladder [879]
3 years ago
14

Help me pleaseee! Solve for BC:

Mathematics
2 answers:
Marrrta [24]3 years ago
8 0

Answer:

21

Step-by-step explanation:

Since this is an equilateral triangle, all sides are equal.

3x-6 = 2x+3

Move like terms to one side

x = 9

Now we plug 9 back in for x

2(9) + 3

=18 + 3

=21

Otrada [13]3 years ago
6 0
<h2>Answer:</h2><h2>Hope my answer helps you plz mark me brainliest I really need it plz</h2>

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I WILL GIVE BRAINLIEST TO CORRECT ANSWER
pickupchik [31]

Answer:

Hi there! The correct option is the third one, aka $176050.

Step-by-step explanation:

median is the value in middle

low from high:

168800

172200

174500

177600

183700

191400

174500 and 177600 is the middle.

174500 + 177600 = 352100

352100/2 = 176050

8 0
3 years ago
A straight slide in a playground design makes an isosceles triangle with the
julia-pushkina [17]

Answer:

Option D.

Step-by-step explanation:

  • First, the you need ti understand that the triangle is an isosceles right angled triangle. In other words, the base and height are equal in length. The third side is the slide. This is the longest side.
  • Next, we know that the formula for calculating the area of a right angled triangle is given by:

        A = 1/2 (base × perpendicular height)

  • The perpendicular height is equal to the base. Let's say the base is <em>x</em>. It means that the height is also x, since height = base.
  • Therefore, the formula will be:

       A = 1/2 (x.x)

           =1/2 (x²)

      32 = 1/2 (x²)

     Multiplying both sides by 2 gives:

     32×2 = x²

     64  = x²

       8   = x

To find the third side, we use the Pythagoras theorem:

    C² = A² + B²

         = 8² + 8²

         = 128

   C = √128

       = 8√2

However, the answer will not be exact, so we  multiply the length of the base and height by 2. This gives x = 16 (Length of base = length of height)

Repeating the steps above gives C = √ (16)² + (16)²

                                                           = √256

This corresponds to option D.

3 0
3 years ago
The following set of linear equations 2x+2y=18 x+3y=17
NemiM [27]

Answer:

x = 5

y = 4

Step-by-step explanation:

1. 2x + 2y = 18

2. x + 3y = 17

Multiply the first equation by 1 and the second equation by 2 to eliminate x

We have

2x + 2y = 18

2x + 6y = 34

Subtract equation 2 from equation 1

-4y = -16

Divide both sides by -4 to isolate y

-4y/-4 = -16/-4

y = 4

Now substitute 4 for y in either equation to get x. Using equation 2 we have

x + 3y = 17

x + 3 x 4 = 17

x + 12 = 17

Subtract 12 from both sides

x + 12 - 12 = 17 - 12

x = 5

x = 5 and

y = 4

8 0
3 years ago
(9x - 3) - (2x2 + 3x + 7)
Anni [7]

Answer:

8 - 6x

Step-by-step explanation:

just trust me the other guy's wrong

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3 years ago
Martha and Howard are running at a constant speed in a marathon. Martha runs at 4.5 mph. Howard’s progress is 5 miles an hour. W
Leno4ka [110]

Answer:

the answer is that Howard runs faster.

Step-by-step explanation:

Because 4.5 is the least  and then 5.0 is greater than Martha

6 0
3 years ago
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