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allochka39001 [22]

3 years ago

7

1 point

1 answer:

SSSSS [86.1K]3 years ago

3 0

Answer:its the first one

Step-by-step explanation:

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Given: AB || DC and m∠2 ≅ m∠4

andrew11 [14]

The answer is C. m∠1 + m∠4 = 180°

4 0

3 years ago

<img src="https://tex.z-dn.net/?f=%20%7B%20%5Ccos%5E%7B4%7D%5Calpha%7D%20%5C%3A%20%2B%20%20%20%5Csin%5E%7B2%7D%20%5Calpha%20%5C%

timurjin [86]

Answer:

Proved

Step-by-step explanation:

$cos^4\alpha +sin^4\alpha =\frac{1}{4}(3+cos4\alpha )\\\\$

Take the Left Hand Side:

$cos^4\alpha +sin^4\alpha\\\\(cos^2\alpha )^2+(sin^2\alpha )^2\\\\(\frac{1+cos2\alpha }{2})^2+(\frac{1-cos2\alpha }{2})^2 \\\\\frac{1+2cos2\alpha +cos^22\alpha }{4}+\frac{1-2cos2\alpha +cos^22\alpha }{4} \\\\$

$\frac{1+2cos2\alpha +cos^22\alpha +1-2cos2\alpha +cos^22\alpha }{4} \\\\\frac{2+2cos^22\alpha }{4} \\\\\frac{1+cos^22\alpha }{2} \\\\\frac{1}{2}(1+cos^22\alpha )\\\\$

$\frac{1}{2}(1+\frac{1+cos4\alpha }{2})$

$\frac{1}{2}(\frac{2+1+cos4\alpha }{2})\\\\\frac{1}{4}(3+cos4\alpha )\\\\$

Hence Proved!

The following identities were used are attached in an image

3 0

3 years ago

Matty jogs 1 km in 5 minutes. Compute Matty's speed in m/s. A) 3.3 m/s B) 16.7 m/s C) 33.3 m/s D) 200.0 m/s

aleksandrvk [35]

A) 3.3 m/s

1 km/ 5 minutes
=1000 m/ 5(60) s
= 1000 m/ 300s
=10/3 s
=3.3 m/s

7 0

4 years ago

Read 2 more answers

3 to the third power minus 2 times 3 plus 5

Dahasolnce [82]

Answer: 26

<u>Step 1</u>

$27-(2)(3)+5$

<u>Step 2</u>

<u></u> $27-6+5$ <u></u>

<u></u>

<u>Step 3</u>

<u></u> $21+5$ <u></u>

<u></u>

5 0

4 years ago

Before you answer, make sure to do a step by step explanation, if you forget, it's whatever. I'll give crowns to the people that

katen-ka-za [31]

Answer: 36.84

(lmk if this isnt right)

Step-by-step explanation:

To find the perimeter of the rectangle:

3+3+3+3+3+3=18

or

3(6)=18

To find the diameter of the circle:

12-(3+3)

12-6=6

You can combine the 2 half circles to make 1 full circle since they both have the same diameter. Use the circumference formula to solve.

C=πd

Substitute

C=3.14(6)

Multiply

C=18.84

Add the perimeter of the rectangle and the circumference of the circle.

18+18.84=36.84

4 0

3 years ago