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natima [27]
3 years ago
13

1.) A tower casts a shadow that is 60 feet long when the angle

Mathematics
1 answer:
Fynjy0 [20]3 years ago
8 0

Answer:

128.67 ft

Step-by-step explanation:

Let the height of the tower be x feet.

\tan \: 65 \degree =  \frac{x}{60}  \\  \\ 2.1445069205 =  \frac{x}{60}  \\  \\ x = 2.1445069205 \times 60 \\ \\  x = 128.670415 \\  \\ x = 128.67 \: ft

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Name one advantage of the metric system over the customary system.
ad-work [718]
Here are some examples.

1. see attachment
metric is all base 10.
1m=100cm=1000mm
measurements like kg and g and mg are sized by prefexes that are powers of 10

in imperial, we've got 12in=1ft and 3ft=1yard and other rediculous stuff like that

a comparison from tumblr is below

"to remember how many feet there are in a mile, u just gotta use 5 tomatoes

five to-mate-oes sounds like five, two, eight, 0 and there’s 5280 feet in a mile

To remember how many meters there are in a kilometre you just remember “1000” because the system of measurement in the rest of the world wasn’t invented by a drunk mathematician rolling dice."

2. metric has a separate measurement for Mass and force (kg and Newton) while English has. lbs being used for both (technically mass is slugs and force is lbs but who uses slugs to find mass?

I conclude with this exerpt from Josh Bazell's Wild Thing
“In metric, one milliliter of water occupies one cubic centimeter, weighs one gram, and requires one calorie of energy to heat up by one degree centigrade—which is 1 percent of the difference between its freezing point and its boiling point. An amount of hydrogen weighing the same amount has exactly one mole of atoms in it. Whereas in the American system, the answer to ‘How much energy does it take to boil a room-temperature gallon of water?’ is ‘***********,’ because you can’t directly relate any of those quantities.” 

5 0
4 years ago
Q6: Women's heights have a mean of 63.6 inches and a standard deviation
Goryan [66]

Answer:

A

Step-by-step explanation:

Hopefully this helps

3 0
3 years ago
A boat travels 351 km in 15 ( with a constant speed ). How far can it travel in 18 hours ( with the same speed)?
MrMuchimi

Answer: 421.20 km

Step-by-step explanation:

\frac{351}{15}=\frac{x}{18}

421.20km

8 0
3 years ago
Will give brainlist if right
Olegator [25]

Answer:

10/50 = <em><u>20%</u></em>

20% experimental probability

1/5 experimental probability

5 0
3 years ago
How many gallons of 20% salt solution must be mixed with 4 gallons of 40% salt solution to make 25% salt solution?
Assoli18 [71]

Answer:

12 gallons of 20% salt solution

Step-by-step explanation:

Let

x -----> the number of gallons of 20% salt solution

we know that

20%=20/100=0.20

40%=40/100=0.40

25%=25/100=0.25

so

0.20(x)+0.40(4)=0.25(x+4)

Solve for x

0.20x+1.60=0.25x+1

0.25x-0.20x=1.60-1

0.05x=0.60

x=12 gallons

6 0
3 years ago
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