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bogdanovich [222]
3 years ago
8

A seamstress is making a decorative pillow and wants to sew lace around the trim. The pillow is in the shape of a triangle with

vertices (7, 7) (10, 3) (7, 3). How many inches of lace will she need if each unit on the grid is one inch?
Mathematics
1 answer:
nirvana33 [79]3 years ago
4 0
Use the distance formula in order to find the length of each side of the triangle. 

<span>>(7, 7) & (10, 3)
</span>√[(7-10)² + (7-3)²] = 5
<span>
></span><span>(10, 3) & (7, 3)
</span>√[(10-7)² + (3-3)²] = 3

>(7, 7) & (7, 3)
√[(7-7)² + (7-3)²] = 4

Adding all lengths (or solving for perimeter), we have: 5 + 3 + 4 = 12 

The seamstress will need 12 inches of lace. 
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Answer:

27.5cm^2

Step-by-step explanation:

you can cut the triangle to make two right triangles

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so 11x2.5=27.5 since its a right triangle you have to divide by two 27.5/2=13.75

that's the answer for one of the triangles now multiply it by two since you need the two right triangle to make the other triangle so the answer is 27.5

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pogonyaev
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3 years ago
Shryia read a 480-page-long book cover to cover in a single session, at a constant rate. After reading for 1.5 hours, she had 40
svet-max [94.6K]

Answer:

The required equation is P(t) = -52t + 480

Step-by-step explanation:

Consider the provided information.

Let P represent the number of pages left to read after t hours.

Shryia read a 480-page-long book cover to cover in a single session, at a constant rate. After reading for 1.5 hours, she had 402 pages left to read.

Total number of page Shryia read in 1.5 hours is:

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It is given that the rate is constant i.e 1.5 hours,

Therefore, she read 78 pages in 1.5 hours.

She can read \frac{78}{1.5} = 52 page per hour

The required equation is:

P(t) = -52t + 480

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Hey there!
We can condense 18 to 9 times nine. However, 9 isn't prime, so we can break that down to 3 times 3 times two, all of which are prime.
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