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horrorfan [7]
3 years ago
15

Can someone help me with the volumes of pyramids please for a brainless and points​

Mathematics
1 answer:
Rufina [12.5K]3 years ago
6 0

Answer:

Step-by-step explanation:

Volume of a pyramid = (l×b×h)/3

V = 128cm^3,

l = 8cm

b = 8cm (/because is a square base)

Substituting this values

128 = (8×8×h)/3

Cross multiply

128×3 = 64h

384 = 64h

Dividing through by 64

h = 384/64

h = 6cm

Height is 6cm

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Which is the solution to the system of equations? y=−3/2x−11/2; 6x+y=−4
cupoosta [38]

Answer:

x= 1/3  and y=−6

Step-by-step explanation:

If you want step by step explanation you can get your explanation from

https://www.mathpapa.com And just type that answer in where it says what do you want to  calculate? type it in that box and it give you step by step but i gave you the answer up top you just need the explanation the explanation is hard to type in here that's why i have you that website :)

4 0
3 years ago
3(4-2x)=-2x<br> will make brainiest to the first two people that answer correctly with explanation
ASHA 777 [7]

Answer:

x = 3

Step-by-step explanation:

First, distribute 3 into the parenthesis:

3(4 - 2x) = -2x

12 - 6x = -2x

Next, combine your x variables by adding +6x to both side:

12 - 6x = -2x           (-6x and +6x cancel out)

   +6x    +6x

12 = 4x                     (divide 12 by 4 to get x by itself)

/4     /4

x = 3

3 0
3 years ago
find three consecutive odd integers such that the sum of the smallest number and middle number is 27 less than 3 times the large
katrin2010 [14]

A generic odd number can be written as

2k+1,\quad k \in \mathbb{Z}

Since there is an odd number every two numbers, three consecutive odd numbers will be

2k+1,\quad 2k+3,\quad 2k+5

Now let's make up the equations: the sum of the first two is

(2k+1)+(2k+3)

And 27 less than 3 times the largest is

3(2k+5)-27

These two must be the same, so we have

(2k+1)+(2k+3)=3(2k+5)-27 \iff 4k+4 = 6k+30-27 \iff 4k+4=6k+3

Subtracting 4k and 3 from both sides gives

1=2k \iff k=\dfrac{1}{2}

Which means that the problem has no solution.

To confirm this hypothesis, we can observe that, on the left hand side, we have the sum of two odd numbers, which is even

On the right hand side, we have an odd number, multiplied by 3 (still odd), take away 27 (still odd).

So, the left hand side is even, and the right hand side is odd. They can't be the same number.

7 0
4 years ago
List the angles of the triangle in order from<br> largest to smallest.
alina1380 [7]

Answer: A, C, B

Step-by-step explanation:

Because "a" has 8 across

And "c" has 10 across

and "b" has 13 across

7 0
3 years ago
1. Find the slope of the line passing through the points (-3,7) and (7,7)
tatiyna

Answer:

1.=0

2.=undefined

Step-by-step explanation:

7-7/7--3

0/10

0

-5-3/-4-(-4)

-8/0

undefined

7 0
2 years ago
Read 2 more answers
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