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Komok [63]
3 years ago
10

What is the volume of a pyramid that is 15mm , 18mm , 21mm in cubic millimeters

Mathematics
2 answers:
maw [93]3 years ago
6 0
V=lwh/3
V = l * w * h / 3
V = 15 * 18 * 21 / 3
=1890
Ugo [173]3 years ago
3 0

Answer:

V=1890mm

Step-by-step explanation:

You must use its formula: which is

V=(Length x height x width) / 3

V=(15x18x21)/3

V=5670/3

V=1890mm

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oee [108]

Answer:

13.6 and .4

Step-by-step explanation:

3.4x4=13.6

leaving .4 left

8 0
2 years ago
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Write the linear inequality shown in the graph.
Korolek [52]
Fist, in the equation y=mx+b, b is the y-intercept. The y-intercept is the poin on the line that crosses the x-axis; the y-intercept is the value of yThese equations follow that format. 
Y=mx+b
y\geq 3x-4. <-----In this equation, the slope(m)=3 b= -4. 

On the graph, we can see that the line crosses the x-axis at y=-4. Knowing that, we can eliminate the answer choices with +4 in the inequality.


The next step, is to pick an (x,y) coordinate that is in the shaded region and plug it into the remaining 2 inequalities. Which ever inequality is true after you solve it, that is the correct answer.  
For example, I'll choose to plug in (-4,4) into the y\geq 3x-4. 
y\geq 3x-4. 
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So, this statement is true becasue -16 is less than positive 4.  Therefore, the correct answer would be y\geq 3x-4. Hope that helped! Comment back with any further questions!


6 0
3 years ago
Volume of this prism ​
Lyrx [107]

The volume is (area of cross-section) x (length) .

-- The cross-section is a triangle.  The area of a triangle is

Area = (1/2) (base) (height) .

In this one, the base is 9/4 m and the height is 3-1/3 m .

Area = (1/2) (9/4 m) (3-1/3 m)

Area = (1/2) (9/4) (10/3)

Area = 90/24 m² .

-- Volume = (area of cross-section) x (length)

Volume = (90/24 m²) x (7-1/3 m)

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<em>Volume = 27.5 m³  </em>

5 0
3 years ago
Does anybody know? thanks :)
Kryger [21]

Answer:

Ratio is 1:5; there are 5 times more blue marbles so there should be 10 blue marbles

Step-by-step explanation:

7:35 creates a 1 green marble to every 5 blue marbles ratio. So for every green marble there are 5 blue marbles. If you have 2 green marbles then you have 5+5 blue marbles

4 0
2 years ago
Write 3/2 as a mixed number
xenn [34]

Answer:

1\frac{1}{2}

Step-by-step explanation:

3/2 = 2/2 * 1/2

2/2 = 1

So 3/2 = 1\frac{1}{2}

6 0
3 years ago
Read 2 more answers
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