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jek_recluse [69]
3 years ago
14

Write a paragraph proof. Given: AC & EC and BC & DC Prove: AB ~ ED

Mathematics
1 answer:
MaRussiya [10]3 years ago
5 0

Answer:

Step-by-step explanation:

1. AC ≅ EC                      1.Given

2. ∠ACB ≅ ∠ECD            2. Vertically opposite angles are congruent.

3. BC ≅ DC                      3. Given

4.ΔACB ≅ Δ ECD             4. Side Angle Side Congruent

5. AB ≅ ED                   5. CPCT  {Corresponding part of congruent triangles}

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Perimeter of a triangle is 27cm,if two sides measure 9cm and 7.8cm,find the measure of third side?
fredd [130]

Answer:

10.2cm

Step-by-step explanation:

Perimeter is the sum of the lengths of all sides.

1st side: 9cm

2nd side: 7.8cm

Perimeter: 27cm

Perimeter = 1st + 2nd +3rd side of a triangle

27cm = 9cm +7.8cm + 3rd side

3rd side = 27cm - 9cm -7.8cm

              = 10.2cm

8 0
3 years ago
What is the simplified form of 30 times x to the sixth power over 14 times y to the fifth power times the fraction 7 times y-squ
Sonbull [250]
If we convert the given in its mathematical form, we have,

                      (30x⁶/14y⁵)(7y²/6x⁴)
It can be observed that the numerator of the first and the denominator of the second have a common factor of 6x⁴. Also, the denominator of the first and the numerator of the second expression have a common factor of 7y².

                      ((6x⁴)(5x²)/(7y²)(2y³))(7y²/6x⁴)

Cancellation of the common terms will give us an answer of,
  
                               <em>5x²/2y³

</em>
<em />Therefore, the simplified version of the involved operation is 5x²/2y³. <em>
</em>
6 0
3 years ago
a parabola has an x-intercept at 2, its axis of symmetry is the line x=4, and the y-coordinate of its vertex is 6. Determine the
nlexa [21]

Answer:

The standard equation of the parabola is:

y=-\frac{3}{2}x^2+12x-18

Step-by-step explanation:

An x intercept of 2 means that the point (2, 0) is in the graph of the parabola.

We can also write the general expression for the parabola in vertex form, since we can use the information on the coordinates of the vertex: (4, 6) - recall that the axis of symmetry of the parabola goes through the parabola's vertex, so the x-value of the vertex must be x=4.

y-y_{vertex}=a\,(x-x_{vertex})^2\\y-6=a\,(x-4)^2

Now we can find the value of the parameter "a" by using the extra information about the point (2, 0) at which the parabola intercepts the x-axis:

y-6=a\,(x-4)^2\\0-6=a\,(2-4)^2\\-6=a\,4\\a=-\frac{6}{4} =-\frac{3}{2}

Then the equation of the parabola becomes:

y-6=-\frac{3}{2} \,(x-4)^2\\y-6=-\frac{3}{2} (x^2-8x+16)\\y-6=-\frac{3}{2}x^2+12x-24\\y=-\frac{3}{2}x^2+12x-18

7 0
4 years ago
AWARDING BRAINLIEST HELP! The length of FH is 9 cm. What is the length of GK?
GarryVolchara [31]

Answer:

9 cm

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
A = {1, 2, 5, 7}B = {3, 4, 6, 7}C = {0, 5, 8, 9}
Feliz [49]

A U B = {1, 2, 3, 4, 5, 6, 7}

Step-by-step explanation:

  • Step 1: Find A U B. Union of two sets A and B are the set of all elements in set A and set B.

A = {1, 2, 5, 7} and B = {3, 4, 6, 7}

A U B = {1, 2, 3, 4, 5, 6, 7}

3 0
4 years ago
Read 2 more answers
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