The side length of an equilateral triangle is 5 centimeters. Find the length of an altitude. Round your answer to the nearest tenth.

The side length of an equilateral triangle whose side length is approximately 4.3 centimeters.

Step-by-step explanation:

By Geometry, we know that each internal angle in equilateral triangles equals 60º. Trigonometrically speaking, we remember that length of the altitude of an equilateral triangle (), in centimeters, is:

(1)

Where is the side length, in centimeters.

If we know that and , then the height of the equilateral triangle is:

The side length of an equilateral triangle whose side length is approximately 4.3 centimeters.

answer: howdy

step-by-step explanation:

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!