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Softa [21]
3 years ago
5

2x+3y=105 And x+2y=65 what is the value for y

Mathematics
2 answers:
Gnesinka [82]3 years ago
8 0
Yas! systems of equations
convert one equation so that a single variable is one one side
x = 65 - 2y
plug it in the other equation
2(65 - 2y) + 3y = 105
130 - 4y + 3y = 105
130 - y = 105
25 = y
Romashka-Z-Leto [24]3 years ago
6 0
2x+ 3y = 105, x + 2y =65
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Step-by-step explanation:

The shape of the new pizza must meet the conditions:

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For simplicity, I will choose a polygon with 5 sides (a pentagon), and I will use 2 right angles (a "house" shape).

Split the pentagon into a rectangle on bottom and triangle on top.  If we cut the rectangle into 8 pieces like a regular pizza, and the triangle in half, we get 10 triangles.

Now we just need to figure out the dimensions.  The area of a 14" circular pizza is:

A = πr²

A = π (7 in)²

A ≈ 154 in²

That means the area of each triangle slice needs to be 15.4 in².  If we make the total width of the pentagon 14", then the width of each triangle is 7", and the height of each triangle is:

A = ½ bh

15.4 in² = ½ (7 in) h

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So, our 13.2" × 14" pentagon has at least 5 sides, is irregular, has the same area as a 14" diameter circle, fits in a 14⅛" × 14⅛" square, and can be divided into 8-12 equal pieces.

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3 years ago
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Which equation can be used to find the volume of this solid?
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Answer:

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Step-by-step explanation:

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8 0
2 years ago
What does J equal????????????????????????????<br> 3 + j / 11 =2<br><br> j =
AfilCa [17]


Let's solve the equation step-by-step

Step 1) Simplify both sides of the equation

3+ j/11 = 2

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Step 2) Subtract 3 from both sides

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 ↑   ↑   ↑  Hope this helps! :D



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