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Tomtit [17]
2 years ago
5

Suppose you roll a single die 5 times. What is the probability of rolling a 3, exactly 4 times? ​

Mathematics
1 answer:
rusak2 [61]2 years ago
5 0
3/25 that’s the answer okay
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Tammy has 35 coins nickels and quarters. In all she has $4.15. How many of each kind of coin does she have
sergey [27]

The currency called the U.S dollar can be split into smaller forms or currency value of itself. Examples of these smaller forms are: <u><em>dimes, nickels, pennies, and quarters.</em></u>

Tammy has 23 nickels and 12 quarters.

Let's represent the number of:

Nickels = n

Quarters = q

It is important to note that the value of:

<em>1 nickel = $0.05</em>

<em>1 quarter = $0.25</em>

<em />

Tammy has 35 coins nickels and quarters. This statement can be represented using an algebraic equation below:

n + q = 35

This can be rewritten as :

n = 35 - q

In all, she has $4.15. This statement can be represented using an algebraic equation below:

0.05n + 0.25q = 4.15

We substitute 35 - q for n in the above equation.

0.05(35 - q) + 0.25q = 4.15

1.75 - 0.05q + 0.25q = 4.15

Collect like terms

- 0.05q + 0.25q = 4.15 - 1.75

0.2q = 2.4

Divide both sides by 0.2

0.2q/0.2 = 2.4/0.2

q = 12

Therefore, the number of quarters Tammy has is 12.

Solving for the number of nickels, we have the equation:

n = 35 - q

n = 35 - 12

n = 23

Therefore, the number of nickels Tammy has is 23.

To learn more, visit the link below:

brainly.com/question/13312288

8 0
3 years ago
What’s the correct answer for this?
cricket20 [7]

Answer:   a

Step-by-step explanation:

3 0
3 years ago
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Yt3=1/2(x+4) in standard form
son4ous [18]
Do you mean 3y? If so, 3y = 1/2x + 2

3y - 1/2x = 2 is standard form
8 0
3 years ago
Help please I give thanks
lawyer [7]

Answer:

17664

Step-by-step explanation:

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3 years ago
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Drag equations to each row to show why the equation of a straight line is y = 3x, where 3 is the slope. Math item stem image
ololo11 [35]

Answer:

Step-by-step explanation:

The question lacks appropriate diagram. Find the diagram attached.

Slope is the change in coordinate of the y coordinate to the x coordinate.

Mathematically, slope m = ∆y/∆x

From the diagram ∆y is the same as 3 (along the vertical) while ∆x is the same as 1 (along the horizontal)

m = ∆y/∆x = 3/1

∆y/∆x = 3/1

y/x = 3/1

Cross multiply

y × 1 = 3 × x

y = 3x

Hence the slope of the line is y = 3x

3 0
3 years ago
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