3. a. Using a ruler and a pair of compasses only, construct: i. Triangle ABC such that all -5cm, l'acl =7.5cm and ZCAB = 120° ii. The locus I, of points equidistant from A and B iii. Locus I, of points equidistant from A and C b. Locate the point of intersection D, of I, and 12. Draw a circle to pass through points ABC 4. a. In the diagram below, IABI=25cm and ZABC = 90°. The area of triangle ABC is 120cm. Calculate the length of BC. A 25cm C С​

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step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5 1/10

t = 3

step-by-step explanation:

put t = 3 in this expression :

(3²-1)(3²-2)(3² - 3)(3² - 4) = 8×7×6×5 = 56×30 = 1680

b

step-by-step explanation:

it have 5 sides and 5 identicle angle.the rest does not have the same property as b.

brainliest

the degrees would remain the same ( the number to the left of the decimal point.

the multiply the decimal by 60 to get the minutes and use the numbers to the left of the decimal point.

then multiply the decimal portion of that by 60 for the seconds and round off as needed.

39 .956652

the 39 remains the degrees.

the minutes = 0.956652 x 60 = 57.39912

the minutes = 57

the seconds = 0.39912 x 60 = 23.95 = 24 ( rounded to nearest tenth)

so 39.956652 = 39 degrees, 57 minutes and 24 seconds

-75.159809

the -75 remains the degrees

the minutes = 0.159809 x 60 = 9.58854

the minutes = 9

the seconds = 0.58854 x 60 = 35.31, rounded to nearest tenth = 35.3 seconds

so -75.159809 = -75 degrees, 9 minutes and 35.3 seconds.

the first coordinate is north or south, since it it positive it is north.

the second number is east or west, because it is negative it is west.

39 degrees, 57 minutes and 24 seconds n

-75 degrees, 9 minutes and 35.3 seconds w