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weeeeeb [17]
3 years ago
6

Which is the correct calculation for the volume of the pyramid?

Mathematics
2 answers:
Leya [2.2K]3 years ago
7 0

Answer:

h×a²×1/3

Step-by-step explanation:

where h is the vertical height of pyramid a is the length of base ..this formula is applicable for square based pyramid only.

Svetach [21]3 years ago
5 0

Answer:

1/3 A h.

Step-by-step explanation:

The volume of a pyramid is 1/3 * area of the base * height = 1/3 A h.

So for example the area of a square-based  pyramid = 1/3 s^2 h where s is the length of a side of the square.

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A rectangle has a height of 3 cm and width of 5cm. A proportional rectangle has a height of 12cm. What would be the width?
Schach [20]

The ratio will be same

  • Let width be x

\\ \sf\longmapsto \dfrac{3}{5}=\dfrac{12}{x}

\\ \sf\longmapsto 3x=5(12)

\\ \sf\longmapsto 3x=60

\\ \sf\longmapsto x=\dfrac{60}{3}

\\ \sf\longmapsto x=20cm

5 0
3 years ago
Read 2 more answers
You have an allowance to spend on lunch this week. You will spend the same amount each day,and you get to keep whatever is left
Naily [24]

Answer:

The total allowance is $18.5, and the amount spent daily is $3.2

Step-by-step explanation:

let T and x represent the total allowance and the amount spent daily respectively.

It was started that the amount remaining after 2 days is $12.10 , which implies the person has spend an equal amount for 2 days

T - 2x =12.10       (equation 1)

It was started that the amount remaining after 5 days is $2.50  , which also implies the person has spend an equal amount for 5 days

T - 5x =2.5       (equation 2)

subtract equation 2 from 1

T - 2x -( T - 5x ) = 12.10 -2.5

T - 2x -T + 5x = 9.6

3x =9.6

Divide both side by 3

x = 9.6/3 =3.2

from equation 1

T - 2x =12.10  

T = 12.10 + 2x = 12.10 + 2*3.2

= 12.10 + 6.4 = 18.5

5 0
3 years ago
Read 2 more answers
The roots of x2 − ( ) + 34 are 5 ± 3i.
Angelina_Jolie [31]
Use quadratic formula
if you had ax^2+bx+c=0, then
x=\frac{-b+/- \sqrt{b^{2}-4ac} }{2a}
a=1
b=?
c=34
subsitute
\frac{-b+/- \sqrt{b^{2}-4(1)(34)} }{2(1)}=5+/-3i
\frac{-b+/- \sqrt{b^{2}-136} }{2}=5+/-3i
make 5+/-3 into fraction over 2,(10+/-6i)/2
\frac{-b+/- \sqrt{b^{2}-136} }{2}=(10+/-6i)/2
multiply both sides by 2
-b+/- \sqrt{b^{2}-136}=10+/-6i
we conclude that -b=10
b=-10

ok so equaton is
x^2-10x+34


5 0
3 years ago
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What is the y-intercept of x=0?
Arisa [49]
Undefined. That equation is the y axis and therefore intercepts the y axis at every point
8 0
3 years ago
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Write a real world problem that can be solved using the equation 5x = 3x + 20
Murljashka [212]
3 years ago<span>Let x = a certain number of cookies 5x = 3x + 20 5x - 3x = 20 2x = 20 x = 20/2 x = 10 John: 5x = 5(10) = 50 Jerry: 3x + 20 = 3(10) + 20 = 30 + 20 = 50 They both have 50 cookies a piece</span>
8 0
3 years ago
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