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xxMikexx [17]
3 years ago
9

Helga signs up to coach hockey. She

Mathematics
1 answer:
Sauron [17]3 years ago
8 0

Step-by-step explanation:

She should take atleast 12 sessions

So 12 x 50 = 600

600 + 200 = 800

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Find the commission on a sale of $8,432 at 12 % commission.
UkoKoshka [18]

Answer: I think the answer is 1011.84. Hope this helps. Can you give me brainliest

Step-by-step explanation:

5 0
3 years ago
Please someone help me to prove this. ​
morpeh [17]

Answer:  see proof below

<u>Step-by-step explanation:</u>

Use the Double Angle Identity: sin 2Ф = 2sinФ · cosФ

Use the Sum/Difference Identities:

sin(α + β) = sinα · cosβ + cosα · sinβ

cos(α - β) = cosα · cosβ + sinα · sinβ

Use the Unit circle to evaluate: sin45 = cos45 = √2/2

Use the Double Angle Identities:   sin2Ф = 2sinФ · cosФ

Use the Pythagorean Identity: cos²Ф + sin²Ф = 1

<u />

<u>Proof LHS → RHS</u>

LHS:                                  2sin(45 + 2A) · cos(45 - 2A)

Sum/Difference: 2 (sin45·cos2A + cos45·sin2A) (cos45·cos2A + sin45·sin2A)

Unit Circle:    2[(√2/2)cos2A + (√2/2)sin2A][(√2/2)cos2A +(√2/2)·sin2A)]  

Expand:        2[(1/2)cos²2A  + cos2A·sin2A + (1/2)sin²2A]

Distribute:              cos²2A   + 2cos2A·sin2A + sin²2A  

Pythagorean Identity:    1 + 2cos2A·sin2A

Double Angle:                1 + sin4A

LHS = RHS:  1 + sin4A = 1 + sin4A   \checkmark

6 0
3 years ago
Express the perimeter of the triangle as a polynomial.
Tcecarenko [31]
The perimeter is just the sum of all of the side lengths.

p=3x+4+x-10+5x-2

p=9x-8
7 0
3 years ago
Read 2 more answers
Tolong bantu jawab please, makasih sebelumnya!
sweet [91]

Answer:

2x² - 3x - 2

Explain:

Use the FOIL method: (a +b)(c +d) = ac + ad +bc +bd.

2x² + x - 4x - 2

Collect like terms.

2x² + (x - 4x) - 2

Simplify.

2x² - 3x - 2

6 0
3 years ago
3 - k - 5k =3 <br> i need help on this asap
weeeeeb [17]

Hello there!

3-k-5k=3

Combine like terms:

3-6k=3

-6k=3-3

-6k=0

k=0

Hope it helps!

~Just a determined gal

#CarryOnLearning

MysteriousNature

8 0
2 years ago
Read 2 more answers
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