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melomori [17]
3 years ago
11

The probability???????????????

Mathematics
1 answer:
slamgirl [31]3 years ago
5 0

Answer:12/87

Step-by-step explanation: You first have to add up all of the birds present. Then you have to see how many of the type you are looking for is there. The number of the type of bird goes on top of the number of total birds.

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Solve the system by substitution x=-8y-15 2x+5y=-8
Ghella [55]

To solve this system by substitution, we must substitute in the value we are given for x in terms of y (the first equation) into the second equation.  This is modeled below:

x = -8y - 15

2x + 5y = -8

2 (-8y - 15) + 5y = -8

Now, we should solve this new equation for y.  To begin, we should use the distributive property to get rid of the parentheses on the left side of the equation and begin the simplification process.

-16y - 30 + 5y = -8

Next, we can combine like terms on the left side of the equation by adding together the two terms that both contain the variable y.

-11y - 30 = -8

Next, we should add 30 to both sides in order to move all of the constant (number) terms to the left side of the equation.

-11y = 22

After that, we should divide both sides of the equation by -11 in order to get the variable y alone.

y = -2

Now, we can substitute our value for y back into one of our original equations (it doesn't matter which one you choose; they will yield the same answer).

x = -8y - 15

x = -8(-2) - 15

To simplify, we should following the order of operations outlined by PEMDAS and compute the multiplication and then the subtraction.

x = 16 - 15

x = 1

Therefore, the answer to the system is x = 1 and y = -2, or (1,-2) when written as an ordered pair.  

Hope this helps!

3 0
3 years ago
Read 2 more answers
A submarine is 1,275.5 feet below sea level. It dives down 215.5 feet and then rises 125.5 feet. Finally, the sub dives down ano
Tema [17]
1275*687+619y= 223yvwusv
6 0
2 years ago
Solve the equation.
Sergeeva-Olga [200]
The answer to your question is 4
3 0
3 years ago
PLEASE HELP I GIVE THANKS
dezoksy [38]
For cylinders to be similar, the ratio between their height and radius must be equal.Our cylinder's ratio is :
\frac { length }{ radius } =\frac { 15 }{ 3 } \\ =5

The only cylinder with same ratio is the one at the choice B.

\frac { length }{ radius } \frac { 25 }{ 5 } =5 
6 0
3 years ago
The figures below are similar. The labeled sides are corresponding.
aev [14]

Answer: 24 cm

Step-by-step explanation:

P_{square} = side *4

It is multiplied by 4 because a square has 4 equal sides and 4 equal angles.

P = 6 * 4 = 24

6 0
2 years ago
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