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4 years ago

a 28 foot ladder leaning against a building forms a 15 degree angle with the side of the building. how y’all is the building?

Mathematics

1 answer:

Komok [63]4 years ago

4 0

Check the picture below.

make sure your calculator is in Degree mode.

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A , B, C , D probability

BlackZzzverrR [31]

Answer:

your laptop is nice really

4 0

3 years ago

The height of a stuntperson jumping off a building that is 20 m high is modeled by the equation h = 20 -57, where t is the time

cupoosta [38]

A stuntman jumping off a 20-m-high building is modeled by the equation h = 20 – 5t2, where t is the time in seconds. A high-speed camera is ready to film him between 15 m and 10 m above the ground. For which interval of time should the camera film him?

Answer:

$1\leq t\geq \sqrt{2}$

Step-by-step explanation:

Given:

A stuntman jumping off a 20-m-high building is modeled by the equation

$h =20-5t^{2}$ -----------(1)

A high-speed camera is ready to making film between 15 m and 10 m above the ground

when the stuntman is 15m above the ground.

height $h = 15m$

Put height value in equation 1

$15 =20-5t^{2}$

$5t^{2} =20-15$

$5t^{2} =5$

$t^{2} =1$

$t =\pm1$

We know that the time is always positive, therefore $t=1$

when the stuntman is 10m above the ground.

height $h = 10m$

Put height value in equation 1

$10 =20-5t^{2}$

$5t^{2} =20-10$

$5t^{2} =10$

$t^{2} =\frac{10}{5}$

$t^{2} =2$

$t=\pm\sqrt{2}$

$t=\sqrt{2}$

Therefore ,time interval of camera film him is $1\leq t\geq \sqrt{2}$

7 0

3 years ago

Help please! I’ll give brainliest.

Lapatulllka [165]

9514 1404 393

Answer:

(a) not proportional

(b) k = 7/8

Step-by-step explanation:

When a linear equation is of the form ...

y = mx + b

with b ≠ 0, the relation is NOT PROPORTIONAL.

If b=0, so the equation is of the form ...

y = kx

then the relation IS PROPORTIONAL. The constant of proportionality is k.

(a) Not proportional

(b) Proportional with k = 7/8

8 0

3 years ago

Which algae are responsible for causing red tides that can kill thousands of fish?

Rudiy27

The answer is Pyrrophyta <span />

7 0

3 years ago

Read 2 more answers

George has a square sandbox in the backyard. The sandbox has an area of 160 square feet. To the nearest foot, what is the length

spin [16.1K]

We know that the sandbox is square, and that the area is 160 sq ft. Since A = s^2 for a square, let's work backwards and find s if A = 160 sq ft = s^2.

s^2 = 160 = 16(10). We do this because 16 is the largest perfect square factor of 160.

Then the length of one side of the square is approx. s = 4√10 ft (12.65 ft)

7 0

3 years ago