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2 years ago

Please help I will reward brainliest

Mathematics

2 answers:

Tresset [83]2 years ago

8 0

Answer:

DEH and HEJ are complementary angles for example.

Step-by-step explanation:

We need to provide any 2 angles that sum to 90deg. We can clearly see that DEH and HEJ are complementary, we can see the same for JEK and KEF.

I don't believe there's more.

gulaghasi [49]2 years ago

8 0

2 x 3= 6. 6-6=0 What that guy said ^

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I NEED HELP PLEASE, THANKS! :)

Elena L [17]

Answer:

First option is the right choice.

Step-by-step explanation:

$\frac{1}{\cos \left(x\right)+1}+\frac{1}{\cos \left(x\right)-1}\\\\\frac{\cos \left(x\right)-1}{\left(\cos \left(x\right)+1\right)\left(\cos \left(x\right)-1\right)}+\frac{\cos \left(x\right)+1}{\left(\cos \left(x\right)+1\right)\left(\cos \left(x\right)-1\right)}\\\\=\frac{\cos \left(x\right)-1+\cos \left(x\right)+1}{\left(\cos \left(x\right)+1\right)\left(\cos \left(x\right)-1\right)}\\\\=\frac{2cos\left(x\right)}{cos^2\left(x\right)-1}\\\\=\frac{2cos\left(x\right)}{sin^2\left(x\right)}$

$=2\cdot \frac{cos\left(x\right)}{sin\left(x\right)}\cdot \frac{1}{sin\left(x\right)}\\\\=-2cot(x)csc(x)$

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7 0

3 years ago

Simply the expression 169 squared

nexus9112 [7]

Use the calculator to find:
169^2=169*169=28561

3 0

3 years ago

Help me solve this algebra 1 question number 10

Anna [14]

Answer:

x=4/7

Step-by-step explanation:

You can write 36^4x-1=6^x+2 to 6^2(4x-1)=6^x+2. Then you can write

2(4x-1)=x+2, 8x-2=x+2, 7x=4, x=4/7

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3 years ago

The students at Walden Middle school are selling tins of popcorn to raise money for new uniforms. They sold 42 tins in the first

tiny-mole [99]

Answer:

$388.5

Step-by-step explanation:

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3 years ago

The poster I'm going to be buying to put all the pictures on is going to be 22 by 28. Each picture I will get is going to be 4 b

lora16 [44]

Answer:

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Step-by-step explanation:

22 x 28 = 616

4 x 6 = 24

616 + 24 = 640 fit

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3 years ago