(2)

Mathematics

1 answer:

nirvana33 [79]3 years ago

5 0

Answer: 5

Step-by-step explanation: 9/2 = 4.5

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Find the volume of the pyramid.

zlopas [31]

Answer:

Step-by-step explanation:

Formula=area of base x height / 3

A= ( 3 x 1 ) x 7 / 3

A= 3 x 7 / 3

A= 21 / 3

A= 7

8 0

2 years ago

Elimination method<br> 4x-2y=48<br> 2x+6y=-18

yulyashka [42]

$4x-2y=48\\ \\ 2x+6y=-18$

First we'll multiply the second equation by -2

$-2\cdot (2x+6y)=-2\cdot -18\\ \\ -4x-12y=36$

Now let's add the new equation and the first one.

$(4x-2y)+(-4x-12y)=48+36\\ \\ 4x-4x-2y-12y=48+36\\ \\ -14y=84\\ \\ y=\frac { 84 }{ -14 } \\ \\ y=-6$

We found y's value. We'll plug it in one of the equations to find x's value.

$y=-6\\ \\ 4x-2y=48\\ \\ 4x-2\cdot -6=48\\ \\ 4x+12=48\\ \\ 4x=48-12\\ \\ 4x=36\\ \\ x=\frac { 36 }{ 4 } \\ \\ x=9$

Solution ;

(9, -6)

4 0

3 years ago

Read 2 more answers

8.9× 10 to the power of 4

Wittaler [7]

Assignment: $\bold{Solve \ 8.9\cdot \:10^4}$