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3 years ago

What is the volume of this pyramid

Mathematics

1 answer:

sineoko [7]3 years ago

7 0

Answer:

192 mm^3

Step-by-step explanation:

v = a^2 * b/3

v = 8^2 * 9/3

v = 64 * 3

v = 192

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Party trays which cost $14 to make not including labor are sold for $35 if two people work eight hour shifts making the tray at

RUDIKE [14]

They would need to sell only 6 trays

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3 years ago

Please help 20 points. I will give Brainly to who ever get it right.

harkovskaia [24]

Answer:

Step-by-step explanation:

(-∞,2)

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3 years ago

Is the slope Positive, Negative, Zero or Undefined? Find the slope What does m=

Lunna [17]

Answer:

-4/5

Step-by-step explanation:

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3 years ago

Read 2 more answers

Two angles are suppplementary if their sum is 180. The larger angle measures four degrees more than seven times the measure of a

olchik [2.2K]

Let the smaller angle be x
The larger angle will be 3x+8
X+3x+8=180

4x=180-8=172
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4 0

4 years ago

Prove that tan 10+tan 70'+taniou = tanio tanfo'tam 1oo.

Galina-37 [17]

Question:

Prove that:

$tan(10) + tan(70) + tan(100) = tan(10). tan(70). tan(100)$

Answer:

Proved

Step-by-step explanation:

Given

$tan(10) + tan(70) + tan(100) = tan(10). tan(70). tan(100)$

Required

Prove

$tan(10) + tan(70) + tan(100) = tan(10). tan(70). tan(100)$

Subtract tan(10) from both sides

$- tan(10)+tan(10) + tan(70) + tan(100) = tan(10). tan(70). tan(100) - tan(10)$

$tan(70) + tan(100) = tan(10). tan(70). tan(100) - tan(10)$

Factorize the right hand size

$tan(70) + tan(100) = -tan(10)(-tan(70). tan(100) + 1)$

Rewrite as:

$tan(70) + tan(100) = -tan(10)(1-tan(70). tan(100))$

Divide both sides by $1-tan(70). tan(100)$

$\frac{tan(70) + tan(100)}{1-tan(70). tan(100)} = \frac{-tan(10)(1-tan(70). tan(100))}{1-tan(70). tan(100))}$

$\frac{tan(70) + tan(100)}{1-tan(70). tan(100)} = -tan(10)$

In trigonometry:

$tan(A + B) = \frac{tan(A) + tan(B)}{1 - tan(A)tan(B)}$

So:

$\frac{tan(70) + tan(100)}{1 - tan(70)tan(100)}$ can be expressed as: $tan(70 + 100)$

$\frac{tan(70) + tan(100)}{1-tan(70). tan(100)} = -tan(10)$ gives

$tan(70 + 100) = -tan(10)$

$tan(170) = -tan(10)$

In trigonometry:

$tan(180 - \theta) = -tan(\theta)$

So:

$tan(180 - 10) = -tan(10)$

Because RHS = LHS

Then:

$tan(10) + tan(70) + tan(100) = tan(10). tan(70). tan(100)$ has been proven

6 0

3 years ago