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3 years ago

Help me out please i need help im usure whats the answer

Mathematics

2 answers:

kkurt [141]3 years ago

6 0

The answer is 80 because the answer for all three sides should be 180

Softa [21]3 years ago

5 0

Answer:

No 80

Step-by-step explanation:

The total degrees for a triangle is 180

37 and 63 is equal to 100

So u do 180 minus 100 which gives u 80

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Find the exact values of cos 3 pi/4 radians sin 3 pi/4 radians.

Liula [17]

If you consult the unit circle, you will see that:

$cos(\frac{3\pi}{4}) = -\frac{\sqrt{2}}{2}\\\\sin(\frac{3\pi}{4}) = \frac{\sqrt{2}}{2}$

3pi/4 in degrees is 3pi/4 * 180/pi = 3/4 * 180 = 135 degrees. And please refer to the attachment to how you can obtain the values above.

Now, lets multiply it together.

$-\frac{\sqrt{2}}{2} \cdot \frac{\sqrt{2}}{2} =\\\\-\frac{2}{4} =\\\\ \boxed{\bf{-\frac{1}{2}}}$

So, <span>cos(3pi/4)sin(3pi/4) = -1/2</span>

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4 years ago

Alejandro needs to buy bird seed from the local pet store for his parrots. A

Gnesinka [82]

First take note he only has $20 and the bag he must buy is $12.55. Also the loose seeds are $1.49 per pound.

To solve subtract 12.55 from 20

20-12.55=7.45

So after buying the 10 lb bag he has $7.45 left now divide that by 1.49

7.45/1.49=5

So after buying the 10 lb bag he can also buy 5 lb of the loose seeds!

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3 years ago

What is the perimeter of a triangle measuring 3 on each side?

ANTONII [103]

Add them all up.
A triangle has 3 sides, and you said each side is 3. So:
3+3+3 = 9

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3 years ago

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I do need help please. Just number 14 :)

Ainat [17]

The difference between the coat cost for Delaware vs Fairfield is $0.60

Explanation:
For Delaware: 80 × .0725 = $5.80
80+5.80= $85.80

For Fairfield: 80 × .065 = $5.20
80+5.20=$85.20

85.80-85.20=0.60

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3 years ago

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The sum of 4 consecutive numbers is 926. Find the four numbers

Kisachek [45]

Answer:231.5

Step-by-step explanation:

If you divide 926 by 4 you will get 231.5

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3 years ago