All categories

3 years ago

0.39 is 15% of what number

Mathematics

1 answer:

vlabodo [156]3 years ago

5 0

0.39/15x100 = 2.6 easy

You might be interested in

From a height of 50 meters above sea level on a cliff, two ships are sighted due west. The angles of depression are 61° and 28°.

Olenka [21]

Answer:

The ships are 66 meters apart.

Step-by-step explanation:

For the sake of convenience, let us label ships A and B

As shown in the figure, the distances to the ships from right triangles.

The distance to the ship A is $d_1$ and it is given by

$tan (61^o)= \dfrac{50}{d_1}$

$d_1=\dfrac{50}{tan (61^o)}$

$\boxed{d_1= 27.71m}$

And the distance to the ship B is $d_2$ and is given by

$tan (28^o)= \dfrac{50}{d_2}$

$d_2=\dfrac{50}{tan (28^o)}$

$\boxed{ d_2=94.04m}$

Therefore, the distance $d$ between the ships A and B is

$d= d_2-d_1=94.04-27.7\\\\\boxed{d=66m}$

In other words, the ships are 66 meters apart.

8 0

3 years ago

Read 2 more answers

Dont trust breekall indian hacker/and help please

ollegr [7]

Answer:

ok....

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Does anybody know where i can watch Naruto shippuden dub online for free no downloads

REY [17]

Answer:

i beliveyou can watch it on 9anime.to but use an addblocker please there is so many ads without it

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

What is the decay factor of the exponential function

worty [1.4K]

Answer:

a.)1/3

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Find the area of the shaded region in square units. Show your reasoning.

motikmotik

Answer:

40 square units

Step-by-step explanation:

First of all, lets say that square has side $l$ , so, the area unit is $l^2$

the diagonal's square is $l\sqrt{2}$

CALCULATION OF TRIANGLES'S AREA (there are 4 triangles)

$A_{triangles}=4*base*heigh*0.5=2*(l\sqrt{2} )(2l\sqrt{2} )=8l^2$

CALCULATION OF MAIN SQUARE AREA

$A_{square}=side*side=(4\sqrt{2} l)(4\sqrt{2} l)=32l^2$

TOTAL AREA

$A_{total}=A_{triangles}+A_{square}=8l^2+32l^2=40l^2$

3 0

3 years ago