In triangle ABC, angle B is 90° and angle A is 45° => triangle ABC is Isosceles triangle. That means side AB = BC
Also, side AC² = AB² + BC² = 2BC²
(6√2)² = 2BC² => 36*2
BC = 6
In triangle BCD, angle D is 90° and angle B is 60° => triangle BCD is semi Equilateral triangle. That means side BD = ½BC = 6/2 = 3 which is the value of X.
Good luck
rounding decimals is very similar to rounding other numbers. If the hundredths and thousandths places of a decimal is forty-nine or less, they are dropped and the tenths place does not change.
For example, rounding 0.843 to the nearest tenth would give 0.8.
If the hundredths and thousandths places are fifty or more, the tenths place is increased by one. The decimal 0.866 rounded to the nearest tenth is 0.9
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Answer:
50 laps
Step-by-step explanation:
20+1.25x+15+2.5x+40+1.5x+25+1.75x=450
7x+100=450
7x+200-200=450-100
7x=350
7x/7=350/7
x=50
Step-by-step explanation:
7x+3y=42.
y=-5x+30.
7x+3(-5x+30)=42
7x-15x+90=42
8x=42-90
-8x=-48
x=-48/-8
x=6
y=-5x+30
y=-5×6+30
=-30+30
y=0
(6,0)