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3 years ago

O is the circumcenter of 4ABC. If OB = OC = BC, what is ∠BAC?

Mathematics

2 answers:

KonstantinChe [14]3 years ago

8 0

Answer:

This is a question for a test. I don't want sound mean but, next time please put in the work.

Step-by-step explanation:

Ahat [919]3 years ago

7 0

Answer:

Step-by-step explanation:

I drew a diagram on paper but cant here soooo....

but math checks out i think.

Angles AOD and COB are both 36.

Angles AOC and DOB are both 144.

DOB has to be 4 times angle COB, right? if so, then:

144 = 4*36. That checks out. Now to see if all the angles combined are 360.

36 + 36 + 144 + 144 =360. It works!

This is my first answer ever btw so if the formatting and grammar is bad im sorry.

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Solve the inequality. 12x – 3x + 11 > 4x – (17 – 9x)

musickatia [10]

Answer:

20>4

Step-by-step explanation:

12-3 forget about the x 12-3=9 . 9+11=20

(17-9)=8 . 8-4 =4

so your answer is correct

6 0

3 years ago

Read 2 more answers

Can someone please please help me please

Olenka [21]

I’m not sure, but I think you divide 360 by each one of those angles.

8 0

3 years ago

Find the maximum value or minimum value for the function f(x) = 0.15(x + 1)² - 3.

il63 [147K]

Answer:

The minimum value for $f(x) = 0.15(x + 1)^2 - 3$ is $-3$ .

Step-by-step explanation:

Given function is $f(x) = 0.15(x + 1)^2 - 3$

We need to find the maximum value or the minimum value for the function.

Now, differentiate $f(x) = 0.15(x + 1)^2 - 3$ w.r.t $x$ .

$f'(x) =\frac{d}{dx}(0.15(x + 1)^2 - 3)\\f'(x)=\frac{d}{dx}(0.15(x+1)^2-\frac{d}{dx}(3)\\$

$f'(x)=2\times 0.15(x+1)\frac{d}{dx}(x+1)-0\\f'(x)=0.3(x+1)(1)\\f'(x)=0.3(x+1)$

Now, we will equate $f'(x)=0$ to find critical point.

$0.3(x+1)=0\\x=-1$

Plug this critical point in to the function $f(x) = 0.15(x + 1)^2 - 3$ we get,

$f(-1) = 0.15(-1 + 1)^2 - 3\\f(-1)=-3$

Also, $f''(x)=0.3$ which is positive, We have minimum value.

So, the minimum value for $f(x) = 0.15(x + 1)^2 - 3$ is $-3$ .

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3 years ago

In a box there are 6 orange balls, 4 green balls and "x" blue balls. If the probability of removing a blue ball is 1/3, what is

worty [1.4K]

Answer: 2/3 I think

Step-by-step explanation:

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2 years ago

Trevor is swimming laps to raise money for the local food bank. He earns $1.85 per lap and has already swum 23 laps.

finlep [7]

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.

The inequality is 1.85x - 42.55 > 100. 42.55 is the amount already raised, 1.85x is number of laps times the money raised by them.

5 0

3 years ago