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Shalnov [3]
3 years ago
5

Given the altitude of an equilateral triangle is 12 cm, find the exact perimeter of the triangle

Mathematics
1 answer:
charle [14.2K]3 years ago
4 0
Altitude=√3a/2=12(a the side of the equilateral triangle)
a=24/√3=8√3cm
perimetre=3a=3*8√3=24√3cm
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Mario worked from 8:25 to 12:45 yesterday. Today
solmaris [256]

The number of hours he worked in all (written in fraction form) is 8\frac{1}{6} \ hours

From the question,

Mario worked from 8:25 to 12:45 yesterday.

From 8:25 to 12:45 gives 4 hours 20 minutes

Also, from the question,

Today  he will work from 11:20 to 3:10

From 11:20 to 3:10 gives 3 hours 50 minutes

To determine the number of hours he work in all, we will add the time spent working on the previous day to that of the current day. That is,

4 hours 20 minutes + 3 hours 50 minutes = 8 hours 10 minutes

Now, to put the answer in fraction form, we will convert 10 minutes to hours

NOTE: 60 minutes = 1 hour

∴ 10 minutes = \frac{10}{60} \ hours = \frac{1}{6} \ hours

∴ 8 hours 10 minutes = 8\frac{1}{6} \ hours

Hence, the number of hours he worked in all (written in fraction form) is 8\frac{1}{6} \ hours

Learn more here: brainly.com/question/3164396

6 0
3 years ago
Any mathematics genius around. To solve this question.. am giving the brainliest
Likurg_2 [28]
Well
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Substitute
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3 years ago
The question and choices are in the picture below NO LINKS
satela [25.4K]

i think its a if its not let me know oki

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4 0
3 years ago
In the figure, b and c are parallel lines. Which of the following statements are true?
Helen [10]

Answer:

1. No, Joe is not correct

2. \angle 5=72^{\circ}

Step-by-step explanation:

Given: b and c are parallel lines

To find:

1. whether the given statement is correct or not

2. \angle 5

Solution:

1.

Sum of two angles that form a linear pair is equal to 180^{\circ}

\angle 3+72^{\circ}=180^{\circ} (linear pair)

\angle 3=180^{\circ}-72^{\circ}=108^{\circ}\neq 90^{\circ}

So, Joe is not correct

2.

If two lines are parallel then alternate interior angles are equal.

As b and c are parallel lines,

\angle 5=72^{\circ} (alternate interior angles)

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3 years ago
Is (4, 7) a solution to the system of equations? Explain your answer.
Angelina_Jolie [31]

Answer:

No

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Neither 4 or 7 is a solution to both equations

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