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4 years ago

Triangle ABC has side lengths:

Mathematics

2 answers:

Georgia [21]4 years ago

8 0

Because ΔABC ≅ ΔHJK
AB = HJ (corr. sides, ≅ Δs)
HJ = 3.5cm

mylen [45]4 years ago

7 0

Answer:

3.5

Step-by-step explanation:

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Divide 153 by 13 which is 51.
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Find AC and BC. Answers: 14.94 13.46 11.10 10 Please help.

anzhelika [568]

Step-by-step explanation:

Use Sine rule.

$\frac{ac}{ \sin(b) } = \frac{ab}{ \sin(c) } \\ \frac{ac}{ \sin(90) } = \frac{10}{ \sin(42) } \\ ac \sin(42) = 10 \sin(90) \\ ac = \frac{10 \sin(90) }{ \sin(42) } \\ ac = 14.9 \: units \: (3s.f)$

Angle A + angle B + angle C = 180 (sum of angles in triangle)

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$\frac{bc}{ \sin(a) } = \frac{ab}{ \sin(c) } \\ \frac{bc}{ \sin(48) } = \frac{10}{ \sin(42) } \\ bc \sin(42) = 10 \sin(48) \\ bc = \frac{10 \sin(48) }{ \sin(42) } \\ = 11.1units (3sf)$

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3 years ago

What is the slope between (2,1); (5,9)

lukranit [14]

Step-by-step explanation:

To find the slope, you divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points.

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3 years ago

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The sum of two numbers is 361 and the difference between the two numbers is 173. What are the two numbers?

Anika [276]

Divide 361 by 2
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Divide 173 by 2
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3 years ago

Given that the circumferential of a circle is 22cm calculate its diameter

Ipatiy [6.2K]

Answer:

diameter =7 cm

Step-by-step explanation:

circum=2pi×r

$2\pi \times r$

2×pi×r=22

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d=2×r=2×3.5=7

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2 years ago