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alukav5142 [94]
3 years ago
11

Mari has 28 wooden cubes. she wants to stack them to form a triangle. Each row will have one block fewer than the row below it.

How many blocks will be in the bottom row of the pyramid?. 6 six cubes, 7 cubes, 8 cubes or 9 cubes?
Mathematics
1 answer:
gtnhenbr [62]3 years ago
8 0
I do believe the answer is 7
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How do i solve this​
Sophie [7]

Step-by-step explanation:

You're given that ΔUVW is similar to ΔYZW.  The tricky part is identifying which sides in ΔUVW correspond to which sides in ΔYZW.

The triangles share point W, so visually rotate one triangle around W until the two triangles align.  That way, you can see that UW and ZW correspond to each other, and VW and YW correspond to each other.

Now you can find the scale:

VW / YW = 5/12

And you can write a proportion to find x:

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3 years ago
Whats the answer and why?
san4es73 [151]

A) -13

Bcz

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6 0
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B. A number y minus 75.​
mel-nik [20]

Step-by-step explanation:

y-75

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