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Dmitry [639]
3 years ago
6

What is the volume of this cube? Enter your answer as a decimal in the box

Mathematics
2 answers:
Scilla [17]3 years ago
7 0

Answer:

9.261 cm3

Step-by-step explanation:

You just multiply the height length and width together, since it is a cube you could also do 2.1 cubed

nexus9112 [7]3 years ago
3 0

Answer:

Around 9.26

Step-by-step explanation:

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From a distance of 20 meters, from its base, the angle of elevation of the top of a building is 32 degrees. Find the height of t
Strike441 [17]

TAN(32°) = x/20 --> x = 12.50 m

4 0
3 years ago
Why is -a² is always negative (a ≠ 0) and why is (-a)² is always positive?
hjlf
-a^2=(-1)\cdot a\cdot a

Regardless of the sign of a, we have a\cdot a=a^2\ge0 (never negative). But multiplying by -1 makes it negative.

On the other hand,

(-a)^2=((-1)\cdot a)^2=(-1)^2\cdot a^2=1\cdot a^2=a^2

which can never be negative for real a.
6 0
3 years ago
Which division fact corresponds to the problem of 8×9 equals 72
kondor19780726 [428]
Basically just do the problem backwards.
72÷9=8
72÷8=9
7 0
3 years ago
A man walks along a straight path at a speed of 4 ft/s. A searchlight is located on the ground 20 ft from the path and is kept f
krek1111 [17]

Answer:

0.128rad/sec

Step-by-step explanation:

Let x represent the between the man and the point on the path

θ = the angle

dx/dt = 4 ft/s

dθ/dt = rate is the searchlight rotating when the man is 15 ft from the point on the path closest to the searchlight

tan θ = x/20 ft

Cross Multiply

20tan θ = x

dx/dt = 20sec² θ dθ/dt

dθ/dt = 1/20 × cos² θ dx/dt

dθ/dt= 1/20 × cos² θ × 4

dθ/dt = 1/5 × cos² θ

Note : cos θ = 4/5

dθ/dt = 1/5 × (4/5)²

dθ/dt = 16/125

dθ/dt = 0.128rad/sec

6 0
3 years ago
Need help ASAP wleoeoowowoww
topjm [15]

Answer:

according to coordinates the answer to that question should be 4,-4

3 0
3 years ago
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