Answer:
Step-by-step explanation:
<em>17.</em>
sin20° =
x = 1 ÷ sin20°
<em>x</em> ≈ <em>2.9238</em>
cos20° =
y = x ÷ cos20°
<em>y</em> ≈ 2.9238 ÷ cos20° ≈ <em>3.11</em>
<em>18.</em>
<em>x = 2√3</em> ≈ 3.46
<em>y = √3</em> ≈ 1.732
******90 POINTS!!*****
2 answers:
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Answer:
5 large pieces of fabric.
Step-by-step explanation:
Length of each side of a square piece of fabric = yard
Area of a Square = Length X Length
Area of one square piece of fabric = X
=
square yard.
To make one scarf, Doris uses 6 square pieces.
Area of one scarf = square yard
Each large pieces of fabric is one-third yard long and 2 yards wide.
This is clearly a rectangle,
Area of a Rectangle = Length X Width
Area of each large piece of fabric= square yard.
Since the Area of one scarf is equal to the area of each large piece of fabric, in order to make 5 scarves, Doris would need 5 large pieces of fabric.
Answer:
Step-by-step explanation:
