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Marat540 [252]
3 years ago
7

Calculate the height of an equilateral triangle with side is 8 cm long​

Mathematics
1 answer:
Greeley [361]3 years ago
8 0

Step-by-step explanation:

use pythagoras theorem for finding the height

hypotenuse is 8cm

base is 4 cm

height?

a^2+b^2=c^2

64-16=a^2

a=7.07cm

Height of equilateral triangle is 7.07cm

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Answer:

6

Step-by-step explanation:

2 halves make a whole so multiply 2 by 3. the answer is six. you can also add the halves. 1/2+1/2+1/2+1/2+1/2+1/2=3.

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2 years ago
Bowser ate 4 1/2 pounds of dog food. That amount is 3/4 of an entire bag of dog food. How many pound of dog food were originally
GalinKa [24]
Divide number of pounds eaten by the portion of the bag eaten.

= 4 1/2 pounds ÷ 3/4
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CHECK:
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6 0
3 years ago
Two cars start at the same time, but travel in opposite directions. One car's average speed is 80 miles per hour (mph). At the e
mojhsa [17]

The speed of an object is the <u>relationship</u> between the <em>distance</em> covered by the object and the<em> time taken</em>. Thus, the <em>average speed</em> of the other car is 30 mph.

The speed of an object is the <u>relationship</u> between the <em>distance</em> covered by the object and the<em> time taken</em>. The <em>expression</em> for <u>speed</u> is given as;

speed = \frac{distance covered}{time taken}

⇒ distance = speed x time taken

In the given question, the <u>distance</u> of the first car after 2 hours can be determined as:

distance = 80 mph x 2 h

              = 160 miles

The <u>distance</u> covered by the <em>first</em> car after 2 hours is 160 miles.

Thus, since the <em>total distance</em> between the two cars after 2 hours is 220 miles, then;

<u>distance</u> covered by the <em>second</em> car = 220 miles - 160 miles

                                                          = 60 miles

The <u>distance</u> covered by the second car is 60 miles.

So that the <em>average speed</em> of the other car is;

speed = \frac{60}{2}

           = 30 mph

The average speed is 30 miles per hour (mph).

For more clarifications on the speed of an object, visit: brainly.com/question/24749487

#SPJ1

5 0
2 years ago
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Answer:

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Because there are two negatives of the same number, we can instantly know that this would be 0.

7 0
2 years ago
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