3 years ago

Can anyone help me / explain these to me? Thank you.

Mathematics

1 answer:

Pavlova-9 [17]3 years ago

8 0

Answer:

The question to your answer is:

a) cos 150 = -√3 / 2 or - 0.866

b) tan 225 = 1

c) cos (-240) = -1/2

Step-by-step explanation:

See the picture below

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Pls help me with this one!! :>

Colt1911 [192]

Answer:

i dont see a picture?

Step-by-step explanation:

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3 years ago

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Lourdes is making a frame in the shape of a parallelogram. She adds diagonal braces to strengthen the frame. Parallelogram A B C

zimovet [89]

Answer:

60 cm

Step-by-step explanation:

Parallelogram ABCD is shown in attached diagram. The diagonals of the parallelogram bisect each other, so

AE = EC

BE = ED

Ib DE = 3y + 6 cm, BE = 5y - 10 cm, then

$3y+6=5y-10\\ \\3y-5y=-10-6\\ \\-2y=-16\\ \\2y=16\\ \\y=8\ cm$

Now, EC = 2y + 4, so

$EC=2\cdot 8+4=16+4=20\ cm$

Since AE = EC, then AE = 20 cm

The brace that connects points B and D has the length

$BD=BE+ED=3y+6+5y-10=8y-4=8\cdot 8-4=64-4=60\ cm$

The brace that connects points A and C has the length

$AC=AE+EC=20+20=40\ cm$

8 0

3 years ago

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a person is equally likely to be born on any day of the week. what is the probability of being born on a tuesday?

Karolina [17]

Answer:

1/7

Step-by-step explanation:

Given in the question that,

probability of a person to born any day of the week is equal

We know that there are total 7 days

out of which there is just one Tuesday in a week

So,

probability of being born on a Tuesday = 1/7

7 0

3 years ago

PLEASE ANSWER TODAY! THANK YOU! :)

Gnoma [55]

Answer:

The 2nd is 1/3,

and the third one is 3.

Step-by-step explanation:

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3 years ago

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What is 2 +4s=16 on a graph

Annette [7]

That is the answer !! hope this helped

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2 years ago