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slava [35]
3 years ago
15

Please help me on question 19

Mathematics
2 answers:
kobusy [5.1K]3 years ago
4 0
Its is 9 cm. I know because the 13 cm side isn't equivalent  to the 13 cm side so if you measure it like i did you will get the answer 9cm.
tatuchka [14]3 years ago
3 0
Since it is a right triangle, you can use the Pythagorean theorem to solve it.
The Pythagorean theorem says that the sum of the squares of the legs of the triangle is equal to the sqauare of the hypotenuse.
ac^2 + ba^2 = cb^2
ac^2 + 5^2 = 13^2
ac^2 + 25 = 169 (simplify the squares)
ac^2 = 144 (subtract 25 from both sides)
ac = 12 (take the square root of both sides)

The correct answer is C. 12 cm.

hope this helps =)
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36 right

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A map of a park has a scale of 1 inch to 1,000 feet. Another map of the same park has a scale of 1 inch to 500 feet. Which map i
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In the adjoining figure , APB and AQC are equilateral triangles. Prove that PC = BQ. ( Hint : <img src="https://tex.z-dn.net/?f=
just olya [345]

Answer:

See Below.

Step-by-step explanation:

Statements:                                                           Reasons:

\displaystyle 1)\text{ } \Delta APB \text{ and } \Delta AQC \text{ are equilateral triangles}      Given

\displaystyle 2) \text{ } m \angle PAB = 60                                                     Definition of equilateral.

3)\text{ } m \angle QAC = 60                                                     Definition of equilateral.

4)\text{ } m\angle PAB = m\angle QAC                                          Substitution

5)\text{ } m\angle PAC=m\angle PAB+m\angle BAC                       Angle Addition

\displaystyle 6)\text{ } m\angle QAB=m\angle QAC+m\angle BAC                       Angle Addition

7)\text{ } m\angle QAB=m\angle PAB+m\angle BAC                       Substitution

\displaystyle 8)\text{ } m\angle PAC=m\angle QAB                                         Substitution

9)\text{ } PA=BA                                                          Definition of equilateral

10)\text{ } AC=AQ                                                        Definition of equilateral

\displaystyle 11)\text{ } \Delta PAC \cong \Delta BAQ                                            Side-Angle-Side Congruence*

\displaystyle 12)\text{ } PC=BQ                                                        CPCTC

* SAS Congruence:

PA = BA

∠PAC = ∠QAB

AC = AQ

6 0
3 years ago
Read 2 more answers
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stich3 [128]

Answer:

<em>18x² - 84x + 96</em>

Step-by-step explanation:

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5 × 2 (4 × 2 - 3x) - 6x(4 × 2 - 3x) + 2(4 × 2 - 3x)

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80 - 30x - 48x + 18x² - 6x

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Hope this helps! :)

6 0
3 years ago
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Temka [501]
5n + 34 = -2(1 - 7n)

5n + 34 = -2 + 14n
5n = -36 + 14n
-9n = -36
9n = 36
n = 4
7 0
3 years ago
Read 2 more answers
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