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Sloan [31]
3 years ago
6

I need help with the work to find this answer

Mathematics
2 answers:
Brilliant_brown [7]3 years ago
8 0
The answer is 2880.
MatroZZZ [7]3 years ago
5 0
So you need to find the volume which is length x width x height

to do this find the volume of the step as if it was a perfect cube (no indent)

so it is 20x16x12 = 3840

then subtract the indent from that (extra space)
so 8x20x6 = 960

3840-960=2880

2880 is the final answer

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Evaluate the following expression if x=4 28x - 9 (2x+ 6)​
musickatia [10]

Answer:

-14

Step-by-step explanation:

substitute 4 for x

28(4) - 9 (2(4)+ 6)​

multiply

112-9(8+6)

add numbers

112-9(14)

multiply

112-126

subtract

-14

6 0
3 years ago
Three fractions between 4/5 and 4/6
Ilya [14]
4/5=24/30 and 4/6=20/30 So three easy fractions between these are 21/30=7/10, 22/30=11/15 and 23/30.
5 0
3 years ago
What is the value of .3 the 4th power
MrMuchimi
3 x 3 x 3 x 3= 81
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4 0
3 years ago
Read 2 more answers
In the figure, AB=12, BC=8, DE=6, PD=4, and A is the point of tangency. Find the radius of circle P.
Lelu [443]

Answer:

The radius of the circle P = 2√10 = 6.325

Step-by-step explanation:

∵ AB is a tangent to circle P at A

∴ (AB)² = BC × BE

∵ BC = 8 , AB = 12 , ED = 6

∵ BE = ED + DC + CB

∴ BE = 6 + CD + 8 = 14 + CD

∴ (12)² = 8 × (14 + DC) ⇒ (12)²/8 = 14 + CD ⇒ CD = (12)²/8 - 14

∴ CD = 4

Join PC and PE (radii)

In ΔBDC and ΔPDE ⇒ ∵ ∠PDC = Ф , ∴ ∠PDE = 180 - Ф

Use cos Rule:

∵ r² = (PD)² + (DC)² - 2(PD)(DC)cosФ

∴ r² = 16 + 16 - 32cosФ = 32 - 32cosФ ⇒ (1)

∵ r² = (PD)² + (DE)² - 2(PD)(DE)cos(180 - Ф) ⇒ cos(180 - Ф) = -cosФ

∴ r² = 16 + 36 + 48cosФ = 52 + 48cosФ ⇒ (2)

∵ (1) = (2)

∴ 32 - 32 cosФ = 52 + 48cosФ

∴ 32 - 52 = 48cosФ + 32cosФ

∴ -20 = 80cosФ

∴ cosФ = -20/80 = -1/4

∴ r² = 32 - 32(-1/4) = 32 + 8 = 40

∴ r = √40 = 2√10 = 6.325

7 0
3 years ago
The diagram shows the measurements of a frame into which concrete is poured to make steps. The steps are shaped like rectangular
Ivahew [28]
(6 x 16 x 6) + (14 x 16 x 7)
Answer = B
4 0
3 years ago
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