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tresset_1 [31]
3 years ago
7

I get none of this...please help?

Mathematics
1 answer:
mixer [17]3 years ago
7 0
1. The sum of the angles in a triangle is equal to 180. 3x+2x+x=180 
2. 3x+2x+x=180 Combine like terms. 6x=180 180/6=30 x=30
3. 3*30=90; 2*30=60 1*30=30
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If the surface area of a cube is 294, whats the length of the cube?
tatyana61 [14]

Answer:

7

Step-by-step explanation:

Total number of surfaces of cube are 6.

Each surface is square.

And area of square is (side)^2

That means, total surface area will be 6 * (side)^2

From question,

294 = 6 * (side)^2 ( Surface area given)

=> 294 ÷ 6 = ( side) ^2

=> 49 = side^2

=> √49 = side

=> 7 = side

So, length of edge of cube is 7

7 0
3 years ago
Please show all work!! this is algebra.
Mnenie [13.5K]
Franco:
3x+2y=19
Caryl:
2x+4y=24

now use elimination

-2(3x+2y=19)
1(2x+4y=24)
=
-6x-4y=-38
2x+4y=24
add them together
which equals -4x=-14
divide both sides by -4
-4x/-4=-14/-4
x=7/2


we found x, so we subsitute it into the the original equation

3x+2y=19
3(7/2)2y=19
2y+21/2=19
-21/2 -21/2
2y=17/2
divide by 2 on both sides
2y/2= 17/2/2
y=17/4

so x= 7/2 and y= 17/4


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PLEASE HELP WITH MATH EASY
Marat540 [252]

Answer:

(2,4)

Step-by-step explanation:

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3 years ago
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