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3 years ago

6

Jane and Richards each painted about 1/5 of their own birdhouse. Jane painted more than Richard. Draw a picture and explain how

that’s is possible

1 answer:

Lena [83]3 years ago

8 0

Just draw 1/5 which is what they painted

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A $1.50 comic book taxed at 7%. What is the total cost?

antiseptic1488 [7]

$1.61

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4 years ago

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X - 0, 1, 2, 3
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3 years ago

60 pOINTS HELP PLEASE 4. A 20-kg child is tossed up into the air by her parent. The child is 2 meters off the ground traveling 5

Solnce55 [7]

K.E=0.5mv^2
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4 years ago

Find an exact value. Cos 75° negative square root of six plus square root of two quantity square root of six minus square root o

ehidna [41]

Answer:

√2(√3 - 1)/4

Step-by-step explanation:

To find an exact value for Cos75°, we use the compound angle formula. Since 75° = 45° + 30°, Cos75° = Cos(45° + 30°).

Using Cos(A + B) = CosACosB - SinASinB where A = 45° and B = 30°,

Cos75° = Cos(45° + 30°) = Cos45°Cos30° - Sin45°Sin30°

Now Cos45° = Sin45° = 1/√2 = √2/2, Cos30° = √3/2 and Sin30° = 1/2.

Substituting these values into the above equation, we have

Cos75° = Cos(45° + 30°)

= Cos45°Cos30° - Sin45°Sin30°

= √2/2 × √3/2 - √2/2 × 1/2

= √6/4 -√2/4

= √2(√3 - 1)/4

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3 years ago

Solve the system below by elimination -2x-9y=-25

xz_007 [3.2K]

I think it’s 2x+9y-25=0

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3 years ago