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rjkz [21]
3 years ago
12

What is the length of AB? please help!

Mathematics
1 answer:
ira [324]3 years ago
3 0

Answer:

AB = 12

Step-by-step explanation:

Since the triangle is isosceles, the sides AB and BC are congruent. Then you have ...

4x = 2x+6

2x = 6 . . . . . . subtract 2x

4x = 12 . . . . . .multiply by 2

The side AB has length 12.

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The cost for an order of 100 kilograms of steel bars is $230. The cost for an order of 150 kilograms of steel bars is $320. Writ
luda_lava [24]

Answer:

y = 9x/5 + 50

Step-by-step explanation:

We are represent the information as coordinate (x,y)

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Also if the cost for an order of 150 kilograms of steel bars is $320, this is expressed as;

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Find the equation of a line passing through the points. The standard form of the equation is expressed as y = mx+c

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Get the slope;

m = y2-y1/x2-x1

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230 = 9/5(100)+c

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Can anybody help me?
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The function f(t) = t2 + 6t − 20 represents a parabola.
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         + 20            + 20
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u + 20 + 9 = t² + 6t + 9
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      u + 29 = t(t + 3) + 3(t + 3)
      u + 29 = (t + 3)(t + 3)
      u + 29 = (t + 3)²
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              u = (t + 3)² - 29

Part B: The vertex is (-3, -29). The graph shows that it is a minimum because it shows that there is a positive sign before the x²-term, making the parabola open up and has a minimum vertex of (-3, -29).
------------------------------------------------------------------------------------------------------------------
Part A: g(t) = 48.8t + 28           h(t) = -16t² + 90t + 50
            | t |   g(t)  |                          |  t  |  h(t)  |
            |-4|-167.2|                          | -4 | -566 |
            |-3|-118.4|                          | -3 | -364 |
            |-2| -69.6 |                          | -2 | -194 |
            |-1| -20.8 |                          | -1 |  -56  |
            |0 |   -28  |                          |  0  |   50  |
            |1 |  76.8 |                          |  1  |  124 |
            |2 | 125.6|                          |  2  | 166  |
            |3 | 174.4|                          |  3  | 176  |
            |4 | 223.2|                          |  4  | 154  |
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Part B: The solution from Part A means that you have to find two solutions in order to know where the solutions of the two functions are located at.
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3 years ago
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