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Alexxx [7]
3 years ago
12

******90 POINTS!!*****

Mathematics
2 answers:
allsm [11]3 years ago
7 0
C hopefully this helps you
kap26 [50]3 years ago
3 0

Answer:

I would say the answer is C , I hope this is helpful

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Solve 17 and 18 please.
Klio2033 [76]

Answer:

Step-by-step explanation:

<em>17.</em>

sin20° = \frac{1}{x}

x = 1 ÷ sin20°

<em>x</em> ≈ <em>2.9238</em>

cos20° = \frac{x}{y}

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

5 0
3 years ago
5. If a chocolate bar is divided into 3 equal pieces, each piece has 170 calories. How many calories are in the whole bar?
Kisachek [45]
170*3=510

510 calories in the whole bar.

Hope this helps!
3 0
3 years ago
Read 2 more answers
Doris uses 6 square pieces of fabric to make one scarf. Each side of a square piece of fabric is one third yard in length. Doris
brilliants [131]

Answer:

5 large pieces of fabric.

Step-by-step explanation:

Length of each side of a square piece of fabric =\frac{1}{3} yard

Area of a Square = Length X Length

Area of one square piece of fabric = \frac{1}{3} X \frac{1}{3} =\frac{1}{9} square yard.

To make one scarf, Doris uses 6 square pieces.

Area of one scarf =  6 X \frac{1}{9}= \frac{6}{9}=\frac{2}{3} 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=\frac{1}{3}X 2=\frac{2}{3} 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.

7 0
3 years ago
Read 2 more answers
Find the value of z.
Leokris [45]

The exterior angle at the intersection of the tangent and secant has a measure that is half the difference between the intercepted arcs.

... ((10x+20) -80)/2 = 2x+15

... 5x -30 = 2x +15

... 3x = 45

... x = 15

So, the unknown arc to the right has measure

.. 10x + 20 = 10·15 +20 = 170

And the arcs of the circle total 360°.

... 80 + z + 170 = 360

... z = 360 - 250 = 110 . . . subtract 250 from both sides

The appropriate choice for the value of z is

... B. 110

3 0
3 years ago
for what values of A does the acute angle formed by the lines 3x+2y=10 and Ax-2y=3 have measure of 45 degree
Nonamiya [84]

Answer:

Step-by-step explanation:

8 0
2 years ago
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