PLEASE ANSWER ASAP FOR BRANLEST!!!!!!!!!!!!!!!

Bentley wants to determine the height of a tree. He is 5

VLD [36.1K]

Answer:

10.7 ft (i think that was supposed to be 7 if not plug in the correct shadow height for 7 to find the height of the tree)

Step-by-step explanation:

5/7 = x/15

multiply by 15

x=10.7 ft

7 0

3 years ago

Help plsssssssssssssssssssssssssssss

Sphinxa [80]

Answer:

c. x= 28°, y= 76°

Step-by-step explanation:

y= 180-104=76°

104= x+y (property of triangle, exterior angles is equal to the sum of opposite interior angles)

x=104-76= 28°

4 0

3 years ago

A triangular pyramid has a base area of 24 square meters and a height of 4 meters. What is the volume of the pyramid?

jek_recluse [69]

Answer:

32 cubic meter

Step-by-step explanation:

Volume for any pyramid is given by following expression

volume of pyramid = 1/3( area of base of pyramid * height of pyramid)

________________________________

In the problem

base area of pyramid = 24 sq. m

height = 4 m

Therefore substituting the above given value in formula for volume of pyramid we have

volume of pyramid = 1/3( 24 sq. m * 4 m) = 8 sq. m * 4 m (since 24/3 = 8)

volume of pyramid = 32 cubic meter.

8 0

3 years ago

The world's tallest building is the Burj Khalifa in Dubai at 828 m tall. The CN Tower in Toronto is 553 m tall. Ryan wants to co

Taya2010 [7]

Answer:

Volume of Burj Khalifa Prism = 4000 $cm^2$

Volume of CN Tower Prism = 2671 $cm^2$

Step-by-step explanation:

Given

Height of Burj Khalifa = 828 m

Height of CN Tower in Toronto = 553 m

Base of rectangular prism is a square with sides 10 cm $\times$ 10 cm.

Height of Burj Khalifa prism = 40 cm

828 m is represented as 40 cm

$\Rightarrow 553 m$ is represented as $\frac{40}{828 } \times 553 = 26.71\ cm$

So, height of rectangular prism of CN Tower = 26.71 cm

Volume of a Prism is given by the Formula:

$V=Area\ of\ Base \times Height$

Base is a square, so Area of base = $Side^2$

Volume of Burj Khalifa Prism:

$V_B=10^2 \times 40 = 4000\ cm^2$

Volume of CN Tower Prism:

$V_C=10^2 \times 26.71 = 2671\ cm^2$

So, the answer is:

Volume of Burj Khalifa Prism = 4000 $cm^2$

Volume of CN Tower Prism = 2671 $cm^2$

4 0

3 years ago

What is the reflection of the point (−2, 3) across the y-axis?

vampirchik [111]

Answer:

distance to x-axis: 3 units
distance to y-axis: 2 units
the reflected point is (2, 3)

Step-by-step explanation:

The given point is (-2, 3), labeled point A in the attachment.

As you know, the distance from the x-axis is given by the y-coordinate. Here, that distance is ...

3 units from the x-axis

__

The distance from the y-axis is given by the magnitude of the x-coordinate. Here, that distance is ...

2 units from the y-axis

Note that the negative coordinate value means the point is located that distance to the left of the y-axis.

__

Reflecting the point across the y-axis means choosing a point that is the same distance (2 units) right of the axis instead of left of the axis. The sign of the x-coordinate value will be positive, instead of negative. (The y-coordinate remains unchanged,)

__

The reflected point is (2, 3).

_____

Additional comment

As we have seen, reflection across the y-axis changes the sign of the x-coordinate:

(x, y) ⇒ (-x, y) . . . . reflection across the y-axis

Similarly, reflection across the x-axis changes the sigh of the y-coordinate:

(x, y) ⇒ (x, -y) . . . . reflection across the x-axis

4 0

2 years ago