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Sidana [21]
2 years ago
9

There are 7 pens in a bag. Four of the pens are blue and the other 3 are red. What's the probability of pulling out a red

Mathematics
2 answers:
GarryVolchara [31]2 years ago
6 0

Answer:

3/7

Step-by-step explanation:

P(red) = number of red pens / total number of pens

         = 3/7

ycow [4]2 years ago
5 0

Answer:

3/7

Step-by-step explanation:

Total pens = 7

Blue pens = 4

Red pens = 3

probability of pulling out a red pen

= No of red pens / Total pens

= 3/7

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Y = 5x - 10<br> Can you solve for x
tensa zangetsu [6.8K]

Answer:

x = \frac{1}{5}y + 2     or       x = \frac{y+10}{5}     (Not sure which one is preferred in your case)

Step-by-step explanation:

<u>Key skills needed: Evaluating expressions</u>

1) We are given: y = 5x-10

2) To solve for the x variable, we want to leave the term with "x" by itself.

This means we add 10 to both sides

--> y + 10 = 5x (Since -10 and +10 cancel out to make 0 or nothing)

3) Then we divide by 5 on both sides to get "x" completely by itself.

-----> \frac{y+10}{5} = x

4) You can keep it as is so --> x = \frac{y + 10}{5}

or you can divide "y" by 5 and "10" by 5 and get --> x = \frac{1}{5} y + 2

(I am not sure which form is preferred one is preferred as the teacher matters)

<em>Hope you understood and have a nice day!!</em>

6 0
2 years ago
Read 2 more answers
Slope is 1/2 and a point is (4, -5) solve for b <br> Y=mx+b
Karo-lina-s [1.5K]

Answer:

y=1/2x-7

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
If mn = 16 and m^2 + n^2 = 68 then (m+n)^2 =
Dima020 [189]

Answer:

B.   100

Step-by-step explanation:

(m + n)^2

= m^2 + 2mn + n^2

Rearrange

(m^2 + n^2) + 2mn

Substitute

(68) + 2*16

= 68 + 32

= 100

7 0
2 years ago
You have a bag of 12 marbles, 5 red, 3 green, 2 yellow &amp; 2 orange. What is the P( red, then orange) WITHOUT replacing the fi
Readme [11.4K]

Answer:

Total number of marbles = 12

P (1 red & 1 orange) =

\frac{1 + 1}{12}  \\  =  \frac{2}{12}  \\  =  \frac{1}{6}  \\  = 0.16

6 0
3 years ago
Read 2 more answers
Factor the polynomial.<br><br> X2-13x+30
Svetllana [295]

Answer:

<h2>\ \boxed{(x - 3)(x - 10)}</h2>

Step-by-step explanation:

{x}^{2}  - 13x  + 30

Write -13x as a difference

{x}^{2}  - 3x - 10x + 30

Factor out x from the expression

x(x - 3) - 10x + 30

Factor out -10 from the expression

x(x - 3) - 10(x - 3)

Factor out x-3 from the expression

(x - 3)(x - 10)

Hope I helped!

Best regards!!

4 0
2 years ago
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