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seraphim [82]
3 years ago
12

A marble is selected at random from a jar containing 4 red marbles, 5 yellow

Mathematics
1 answer:
Alexus [3.1K]3 years ago
4 0
4 out of 17 chances you will get red
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Brainliest ASAP. <br> Divide 30 by 1/2. Then add 10. What do you get?<br> A.70<br> B.200
kramer

Answer:

A

Step-by-step explanation:

30/.5 = 60

60 + 10 = 70

5 0
4 years ago
Read 2 more answers
PLEASE HELP ME WITH IT.
scoundrel [369]

OK.  I did it.  Now let's see if I can go through it without
getting too complicated.

I think the key to the whole thing is this fact:

     A radius drawn perpendicular to a chord bisects the chord.

That tells us several things:

-- OM bisects AB. 
   'M' is the midpoint of AB.
   AM is half of AB.

-- ON bisects AC.
    'N' is the midpoint of AC.
   AN is half of AC.

--  Since AC is half of AB,
     AN is half of AM.
     a = b/2 

Now look at the right triangle inside the rectangle.
'r' is the hypotenuse, so

                                            a² + b² = r²

But  a = b/2, so             (b/2)² + b² = r²

(b/2)² = b²/4                   b²/4   + b² = r²

Multiply each side by 4:     b² + 4b² = 4r²
                                       -  -  -  -  -  -  -  -  -  -  -
                                            0  + 5b² = 4r²  
Repeat the
original equation:                a² +  b² =  r²

Subtract the last
two equations:                  -a² + 4b² = 3r² 

Add  a²  to each side:              4b²  =  a² + 3r² .    <=== ! ! !
 
7 0
4 years ago
Use repeated subtraction to divide 86 divided by 9
Fudgin [204]

-- Start with 86.

-- Subtract 9 the first time.        You have  77 left.

-- Subtract 9 the 2nd time.        You have  68 left.

-- Subtract 9 the 3rd time.        You have  59 left.

-- Subtract 9 the 4th time.        You have  50 left.

-- Subtract 9 the 5th time.        You have  41 left.

-- Subtract 9 the 6th time.        You have  32 left.

-- Subtract 9 the 7th time.        You have  23 left.

-- Subtract 9 the 8th time.        You have  14 left.

-- Subtract 9 the 9th time.        You only have 5 left, so you can't subtract 9 again.

                                                 You subtracted it 9 times, and you have 5 left.

                                                 So  86  divided by 9 is  (9 with remainder 5) .

3 0
4 years ago
Ryan orders a pizza with a 20 inch diameter and asks for a cheese stuff crust along its border . The cheese filled border measur
Kitty [74]
C = pi x d
So the border is about 3.1 x 20 = 62 inches
5 0
4 years ago
Please help‼️<br> Find the product. Simplify your answer.<br> -3n-(-3n2-5)
Bad White [126]

Answer:

-3n-3n2+5

Step-by-step explanation:

You can use Keep Change Change in order to simplify the problem

6 0
4 years ago
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