3 years ago

A bag contains 6 blue counters and 4 red counters. I take two counters out at random. My

Mathematics

1 answer:

Step2247 [10]3 years ago

6 0

Answer:

Possible outcome=6+4=10

P(red counter)=2/10=1/5

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-1/3 -(-5/12) which shows an equivalent addition expression

dem82 [27]

Answer:

-1/3 - (-5/12) = 1/12.

Step-by-step explanation:

Simpler equation:

6/12 + (-5/12) = 1/12

Or This:

6/12 - 5/12 = 1/12.

hope this helped.

5 0

3 years ago

In a triangle ABC, tan (a) = 20/21. Find sin (a) and cos (a)

sesenic [268]

Answer:

sin(a)=20/29

cos(a)=21/29

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3 years ago

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givi [52]

Answer:

Step-by-step explanation:

-(5×-7-3)

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3 years ago

Colin and Brian were playing darts. Colin scored 141. Brian scored 154 more than Colin. What was their combined score

creativ13 [48]

Answer:

436

Step-by-step explanation:

Colin’s score=141

Brian’s score= 141+154

=295

Total score = 295+141

=436

5 0

3 years ago

Read 3 more answers

Which equation represents the circle described? (in picture)

Sedaia [141]

You are right. In circle equation we have =r² so the correct answer will be C od D. But we have to calculate the center of a circle.

$x^2+y^2-8x-6y+24=0\quad|-24\\\\(x^2-8x)+(y^2-6y)=-24$

Complete the square:

$x^2-8x+a^2\implies a=\dfrac{8x}{2x}=4\implies x^2-8x+4^2\\\\\\y^2-6y+b^2\implies b=\dfrac{6y}{2y}=3\implies y^2-6y+3^2$

And we have:

$(x^2-8x)+(y^2-6y)=-24\\\\(x^2-8x+4^2)-4^2+(y^2-6y+3^2)-3^2=-24\\\\
(x-4)^2+(y-3)^2-16-9=-24\\\\(x-4)^2+(y-3)^2-25=-24\quad|+25\\\\\boxed{(x-4)^2+(y-3)^2=1}$

So the answer is C (the same left side of equation).

6 0

3 years ago