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3 years ago

If two angle of a right angle triangle are in the ratio 1:2,find them

Mathematics

2 answers:

Oksanka [162]3 years ago

5 0

Answer:

let the angles be x,2x

=>90+x+2x=180

=>3x=90

=>x=30

so, the angles are 30,60

disa [49]3 years ago

4 0

let the angles be x,2x

=>90+x+2x=180

=>3x=90

=>x=30

so, the angles are 30,60

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A boat traveled 100 miles downstream and back the trip downstream took five hours the trip back to 10 hours what is the speed of

salantis [7]

Answer:

boat: 15 mph
current: 5 mph

Step-by-step explanation:

The relation between time, speed, and distance is ...

speed = distance/time

The speed downstream is ...

downstream speed = (100 mi)/(5 h) = 20 mi/h

The speed upstream is ...

upstream speed = (100 mi)/(10 h) = 10 mi/h

The boat's speed in still water is the average of these:

boat speed = ((downstream speed) + (upstream speed))/2 = (20 +10)/2 mi/h

boat speed = 15 mi/h

The speed of the current is the difference between the travel speed and the boat speed:

current speed = downstream speed - boat speed

= (20 mi/h) - (15 mi/h)

current speed = 5 mi/h

8 0

3 years ago

What is meter to millimeters equal

oksano4ka [1.4K]

1 meter = 1000 millimeters

5 0

3 years ago

The president of a certain university receives a salary that is four times the salary of one of the department heads. The total

Viktor [21]

a. The salary of the department head is $105,000.

b. The salary of president is $420,000.

Step-by-step explanation:

Let,

x be the salary of president.

y be the salary of head of department.

According to given statement;

x=4y

a) What is the salary of the department head?

Salaries of two heads of department = $210000

$2y=210000$

Dividing both sides by 2;

$\frac{2y}{2}=\frac{210000}{2}\\y=105000$

The salary of the department head is $105,000.

b) What is the salary of the president of the university?

x=4y

$x=4(105000)\\x=420000$

The salary of president is $420,000.

Keywords: Division, multiplication

Learn more about multiplication at:

#LearnwithBrainly

6 0

4 years ago

The sphere's radius is one-third the radius of the hemisphere. How does the volume of this hemisphere compare with the volume of

liraira [26]

Volume of the sphere = 3/4 pi r^3

The spheres radius is one third of the hemisphere's so radius of hemisphere = 3r
Volume of the hemisphere = 1/2 * 4/3 pi (3r)^3
= 2/3 * 27 pi r^3
= 18 pi r^3
So vol hemisphere / vol sphere = 18 pi r^3 / 4/3 pi r^3 = 18 * 3/4 = 13.5

Hemisphere is 13.5 times the volume of the sphere.

6 0

3 years ago

Read 2 more answers

A fire is sighted due west of lookout A. The bearing of the fire from lookout B, 8.2 miles due south of A, is N 33.90°W (meaning

icang [17]

Well you will get a right angled triangle Using Cos x = adj/hyp cos33.9 = 8.2/hyp hyp=8.2 / (cos33.9). So it would be <span>9.9 miles to 1 dp</span>

8 0

3 years ago

If two angle of a right angle triangle are in the ratio 1:2,find them​

If two angle of a right angle triangle are in the ratio 1:2,find them