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3 years ago

What is the surface area of a cube whose sides are 12 inches?

Mathematics

1 answer:

Alborosie3 years ago

7 0

Answer:

just do 6 times 12 and get your answer

Step-by-step explanation:

aka the answer is 72

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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

Please help!!!!!!!

horsena [70]

Answer:

Thank you and please rate me as brainliest as it will help me to level up

4 0

2 years ago

Patrycja goes shopping in a supermarket.

inysia [295]

Answer:£0.37

Step-by-step explanation:

£4.44/12=£0.37

3 0

3 years ago

The point (1, –5) is reflected across the y-axis. A coordinate plane. What are its new coordinates?

luda_lava [24]

<h3>Answer: Choice C. (-1, -5)</h3>

Explanation:

The reflection rule we use is

$(x,y) \to (-x, y)$

when we want to reflect over the y axis. The x coordinate flips from positive to negative, or vice versa, while the y coordinate stays the same.

Therefore, $(1, -5) \to (-1, -5)$

7 0

3 years ago

Read 2 more answers

HEEEEEEEEEEEEEEEEEEEEEEELLLLLLLLLLLLLLLLLLLLLLLLLPPPPPPPPPPPPPPPPPPP WITH ANSWER PLZZZZ

earnstyle [38]

First, find the area of each of the prisms sides

5 by 5.5 = 27.5

3 by 5.5 = 16.5

4 by 3 cut in half = 6 (theres 2 of thoses so 12)

4 by 5.5 = 22

Add up the products and the surface area is 78 units

Post brainliest if this helped :)

4 0

3 years ago