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VashaNatasha [74]
3 years ago
10

Jessica has a bag of marbles. there are 7 red and 3 blue. she reaches in and pulls out a red on the first draw. she then reaches

in for her second draw, without replacing the first marble. what is the probability that Jessica will pull out 2 red marbles
Mathematics
1 answer:
meriva3 years ago
5 0
I think it's 2 1/3 chances to pick out 2red marbles.
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#83 will give brainliest with best response!​
Brilliant_brown [7]

Answer:

\frac{31x-159}{168y}

Step-by-step explanation:

\frac{x-4}{7y} - \frac{x+7}{8y} + \frac{x+3}{6y}

the LCD of the denominators is 168y , then

\frac{24(x-4)-21(x+7)+28(x+3)}{168y} ← distribute and simplify numerator

= \frac{24x-96-21y-147+28x+84}{168y}

= \frac{31x-159}{168y}

8 0
3 years ago
Read 2 more answers
Martina is currently 14 years older than her cousin Joey. In 5 years she will be 3 times as old as Joey. Use this information to
Komok [63]
<span>1. Martina is given to be 14 years older than Joey who is x years old. Hence, the age of Martina can be expressed as, x + 14
 2. If Joey's current age is x then in 5 years he will become x+5 years old.
 3. Martina's age will be her current age added with 5 making it, x+14+5 or x + 19.
4. The equation that would best represent the given scenario in this item is: x + 19 = 3(x + 5)
 5. From the given above, the value of x is equal to 2. This is Joey's current age.
 6. The current age of Martina is x + 14 which is equal to 16.</span>
3 0
4 years ago
Which phrase SIgnals a compare and-contrast text structure O as a result betore long for this reason on the other hand​
Shalnov [3]

Answer:

D. On the other hand.

Step-by-step explanation:

As a result, before long, and for this reason would be cause and effect. On the other hand is the only remaining option.

7 0
3 years ago
I don't really know what to do for this one.
Colt1911 [192]
Let, Price of a shirt = x
Price of a Jeans = y

Equations would be: 4x + 3y = 150
x + 2y = 70
x = 70-2y

Substitute it into first equation, 
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280 - 8y + 3y = 150
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y = 130/5
y = 26

Substitute it into 2nd equation, 
x + 2(26) = 70
x = 70-52
x = 18

So, Cost of a Shirt = $18  &  Cost of a Jeans = $26

Hope this helps!
3 0
3 years ago
Find the measure of the missing angle in the triangle shown 49° 57°
Harlamova29_29 [7]
Ok, we know that there are 270 degrees in a triangle, so just add 49+57, the you'll get 106, 270-106=164. ANSWER: 164
7 0
3 years ago
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