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3 years ago

What is 2+2 GUYS I REALLY NEED HELP MY KINDERGARDEN TEACHER IS COMING!!!!!

Mathematics

3 answers:

Ket [755]3 years ago

7 0

Answer:

It's 5

Step-by-step explanation:

Good Luck

Dimas [21]3 years ago

6 0

Answer:

Step-by-step explanation:

Cody Grace2 years ago

0 0

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Is 0.7777.... a rational or irrational number and why

xxTIMURxx [149]

Answer:

irrational.

Step-by-step explanation:

0.7777... repeats and does not end so it is irrational

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3 years ago

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Question 1 (1 point)

KatRina [158]

Answer:

97.2

Step-by-step explanation:

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3 years ago

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Please can u tell me the answer and method

stich3 [128]

160/4=40 so each side is 40. Divide the perimeter by how many sides you have.

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3 years ago

Select TWO values of x that are roots

Sauron [17]

$x_1=\dfrac{-b-\sqrt{b^2-4ac}}{2a};\ x_2=\dfrac{-b+\sqrt{b^2-4ac}}{2a}\\\\y=x^2+3x+5\\\\a=1;\ b=3;\ c=5\\\\b^2-4ac=3^2-4(1)(5)=9-20=-11\\\\x_1=\dfrac{-3-\sqrt{-11}}{2\cdot1}=\dfrac{-3-\sqrt{-11}}{2}\\\\x_2=\dfrac{-3+\sqrt{-11}}{2}$

Answer: A and B.

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3 years ago

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Given sin theta= 6/11 and sec theta < 0, find cos theta and tan theta.

bekas [8.4K]

Answer: option a.

Step-by-step explanation:

By definition, we know that:

$cos^2(\theta)=1-sen^2(\theta)\\\\tan(\theta)=\frac{sin(\theta)}{cos(\theta)}$

Substitute $sin(\theta)=\frac{6}{11}$ into the first equation, solve for the cosine and simplify. Then, you obtain:

$cos(\theta)=\±\sqrt{1-(\frac{6}{11})^2}\\\\cos(\theta)=\±\sqrt{\frac{85}{121}}\\\\ cos(\theta)=\±\frac{\sqrt{85}}{11}$

As $sec\theta$ then $cos\theta$ :

$cos(\theta)=-\frac{\sqrt{85}}{11}$

Now we can find $tan\theta$ :

$tan\theta=\frac{\frac{6}{11}}{-\frac{\sqrt{85}}{11}}\\\\tan\theta=-\frac{6\sqrt{85}}{85}$

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3 years ago

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