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Norma-Jean [14]
3 years ago
11

There is also a second step it says

Mathematics
1 answer:
Pachacha [2.7K]3 years ago
4 0

Answer:

??????????????????sry I don't understand

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Volume of rectangular prism 4cm 7.5cm 18cm
Sergio039 [100]

Answer:

the volume is 530cm^3

Step-by-step explanation:

4*7.5*18

5 0
3 years ago
Read 2 more answers
Find the height of a tree of angle of elevation of its top changes from 25 degree to 50 degree as the observer advance 15m towar
Natali5045456 [20]

Answer:

  11.5 m

Step-by-step explanation:

The problem can be solved using a trig relation that relates the side opposite the angle to the side adjacent to the angle. That relation is ...

  Tan = Opposite/Adjacent

The lengths of the adjacent sides of the triangle can be found by rearranging this formula:

  Adjacent = Opposite/Tan

__

The "opposite" side of the triangle is the height of the tree, which we can represent using h. The problem statement tells us of a relation between adjacent side lengths and angles:

  h/tan(25°) -h/tan(50°) = 15 . . . . . moving 15 meters changes the angle

  h(1/tan(25°) -1/tan(50°)) = 15

  h = 15·tan(25°)·tan(50°)/(tan(50°) -tan(25°)) = 15(0.55572/0.72545)

  h ≈ 11.4907 . . . . meters

The height of the tree is about 11.5 meters.

7 0
3 years ago
if a scatter plot has no association then... A.) it has no ordered psirs B.) its ordered pairs have no predictable pattern C.) i
musickatia [10]

Answer:

If a scatter plot has no association then it's ordered pairs have no predictable pattern.  

Step-by-step explanation:

8 0
3 years ago
An eighth-grade student said the side length 41,40 and 9 do not form a right triangle, because
balandron [24]

Answer:

Error was CHOOSING the CORRECT hypotenuse in the given sides.

H = 41 units

Step-by-step explanation:

Here, the given sides of the triangle are: 41,40 and 9

Now, as we know in a RIGHT ANGLED TRIANGLE:

The longest side is the HYPOTENUSE.

So, here H = 41

Now, by PYTHAGORAS THEOREM:

({PERPENDICULAR)^2 + ( BASE)^2 = (HYPOTENUSE)^

(40)^2 + (9)^2  = 1600 + 81  = 1681 = (41)^2\\\implies (40)^2 + (9)^2  = (41)^2

Hence, Pythagoras theorem for Right angled triangle is SATISFIED

So, error was CHOOSING the CORRECT hypotenuse in the given sides.

The correct H = 41 units and NOT 40 units.

8 0
3 years ago
Cot²3x - 3cot3x +2 = 0<br> cotx = t<br> what equation for t
kumpel [21]

Answer:

Step-by-step explanation:

cot²(3x)=y

y²-3y+2=0

y²-y-2y+2=0

y(y-1)-2(y-1)=0

(y-1)(y-2)=0

y=1,y=2

cot3x=1

tan 3x=1=tan (π/4)=tan (nπ+π/4)

3x=nπ+π/4=(4nπ+π)/4=(4n+1)π/4

x=(4nπ+1)π/12,n is an integer.

cot 3x=2

tan 3x=1/2

3x=tan^{-1}(1/2)≈26.57°+360n

x≈8.86°+120n

6 0
3 years ago
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