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Paladinen [302]
3 years ago
9

A quilt design is made up of right triangles that have a base of 6 inches and a height of 2 2/3 inches. If the quilt is rectangu

lar with dimensions of 90 inches by 72 inches, how many triangles are needed to complete the quilt?​
Mathematics
1 answer:
tia_tia [17]3 years ago
3 0

Answer:

810

Step-by-step explanation:

number of triangles needed = area of rectangle / area of triangle

area of triangle  = 1/2 x base x height

1/2 x 6 x 8/3 = 8

area of rectangle = length x width = 90 x 72

90 x 72/ 8 = 810

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6 0
3 years ago
The expression x-2 has a value of -5 for some value of x. For the same value of x, what is the value of the expression (x-2)²+5x
solong [7]

Answer:

-10

Step-by-step explanation:

Assuming that x-2=-5, we can subtitute it into the equation as follows:

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8 0
3 years ago
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5 0
3 years ago
Of the 10 people attending a seminar, 5 have gray hair.
Sliva [168]

Answer:

1/2

Step-by-step explanation:

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5 of these have grey hair.

To find the chances of a somone having grey hair, we need to divide people with grey hair over total people:

\frac{value}{total} =probability

This is the same division we use to find things such as percentage and ratio as well.

Now lets plug in our numbers and solve:

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So half of the people have grey hair.

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The probability is 50% that someone will have grey hair.

Hope this hepls!

8 0
3 years ago
Read 2 more answers
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