(6.25 divided by 1.8 minus 1.6) multiplied by 2 / 3

(6.25 divided by 1.8 minus 1.6) multiplied by 2 / 3

(6.25 divided by one and one eighth minus one and five sixths) multiplied by two-thirds
=（25/4÷9/8-11/6）x2/3
=(50/9-11/6)X2/3
=(100/18-33/18)X2/3
=67/18X2/3
=134/54

What's the equivalent of 100 degrees - 60 degrees, 34 minutes, 10 seconds, 176 degrees, 52 minutes / 3?

100°-60°34′10″
=99°59′60″-60°34′10″
=39°25′50″
176°52′/3
=174°174′120″/3
=58°58′40″

Calculate 1 / 2 + 1 / 6 + 1 / 12 + 1 / 20 + 1 / 30 +. + 1 / 9900

1 / 2 + 1 / 6 + 1 / 12 + 1 / 20 + 1 / 30 +. + 1 / 9900
=1/(1x2)+1/(2x3)+1/(3x4)+…… +1/(99x100)
=1-1/2+1/2-1/3+1/3-1/4+…… +1/99-1/100
=1-1/100
=99/100

How to simplify 36 degrees 52 minutes 12 seconds?

12 seconds / 60 seconds = 0.2 minutes
(52 + 0.2) / 60 = 0.87 degrees
36 degrees + 0.87 degrees = 36.87 degrees

1 / 2 + 1 / 6 + 1 / 12 + 1 / 20 + 1 / 72 + 1 / 90

One in two plus one in six plus one in twelve. One in 72 plus one in 90
=1 minus 2 points 1 plus 2 points 1 minus 3 points 1 plus 3 points 1 minus 4 points 1 plus 4 points 1 minus 5 points 1 plus 5 points 1 minus 6 points 1 minus 7 points 1 plus 7 points 1 minus 8 points 1 plus 8 points 1 minus 9 points 1 plus 9 points 1 minus 10 points 1
=1 minus 1 in 10
=9 out of 10

Calculation: 80 ° 32 ′ 15 ″ + 90 ° 27 ′ 45 ″=______ ；100°-36°18′52″=______ ．

80°32′15″+90°27′45″=171°；100°-36°18′52″=63°41′8″．

Simple calculation of 1 / 2 + 1 / 6 + 1 / 12 + 1 / 20 +. + 1 / 72 + 1 / 90

The original formula = 1 / 2 + (1 / 2-1 / 3) + (1 / 3-1 / 4) + (1 / 4-1 / 5) + + （1/8-1/9） + （1/9-1/10）
= 1/2 + 1/2 -1/3 + 1/3 - 1/4 + 1/4 - 1/5 + 1/5 +…… +1/8 -1/9 + 1/9 -1/10
= 1-1/10
= 9/10

What angles are 80 degrees and 100 degrees?

80 degrees is an acute angle, 100 degrees is an obtuse angle

Simple calculation of 3.4 + 3.4 times 11 + 12 times 6.6
5.6 times 0.375 + three eighths times 5.4-0.375 times 0.9

3.4 + 3.4 times 11 + 12 times 6.6 = 3.4 * (1 + 11) + 12 * 6.6 = 3.4 * 12 + 12 * 6.6 = 12 * (3.4 + 6.6) = 12 * 10 = 1205.6 times 0.375 + three eighths times 5.4-0.375 times 0.9 = 5.6 * 0.375 + 0.375 * 5.4-0.375 * 0.9 = 0.375 * (5.6 + 5.4-0.9) = 0.375 * (10 + 0.1) = 0.375 * 10 + 0.375 * 0

How long does it take for the water to drop from 100 to 80 degrees
In winter, it takes several minutes for 600 ml of 100 ℃ water to cool down to 80 ℃
The water containers are beverage size bottles like "pulse"
Does the water temperature of water dispenser keep 80 ℃ under the condition of heat preservation

According to the theoretical calculation, it will take about 8 minutes. But the actual situation depends on the container you hold water. For example, if you use thermos bottles, even if you don't cover them, it will be difficult to drop to 80 degrees for a long time. If you use containers with large bottom area, it will be able to drop to 80 degrees in a few minutes