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Lesechka [4]
3 years ago
9

Use the substitution method to solve each system of equations. Write the answer in ordered pairs.

Mathematics
1 answer:
tatyana61 [14]3 years ago
5 0

x -y = 1

5x + 3y = 45

Solve the first equation for x: x = y + 1

Substitute x in the second with y + 1

5x + 3y = 45

5(y + 1) + 3y = 45

5y + 5 + 3y = 45

8y + 5 = 45

8y = 40

y = 5

Substitute 5 for y in x = y + 1

x = y + 1

x = 5 + 1

x = 6

Answer: (6, 5)

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A six-sided die is rolled 25 times. The number 3 appears eight times. What is the experimental probability of getting a 3?
alisha [4.7K]
<h3>Answer in fraction form = 8/25</h3><h3>Answer in decimal form = 0.32</h3><h3>Answer in percent form = 32%</h3>

We have 8 instances of "3" showing up out of 25 total rolls, which is where the fraction 8/25 comes from. Use your calculator to find that 8/25 = 0.32. Or you could multiply top and bottom of 8/25 by 4 to get 32/100 = 0.32 = 32%

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3 years ago
If i dont know the original price and the $ discount is 64$ and tge sales price is 72 what is the original price,?
mixer [17]

Answer:

136

Step-by-step explanation:

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4 0
2 years ago
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Harrizon [31]

Answer:

x=11

Step-by-step explanation:

34(RT) minus 12(RS)=22. 22 divided by 2 equals 11.

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2 years ago
On a fair 6-sided die each number has an equal probability p of being rolled. When a fair die is rolled n times, the most likely
Feliz [49]
A 1.5 standard deviation above the mean is
np + 1.5 <span>√(np(1-p))

We are given with
np = 200
p = 200/n
The standard deviation is
</span><span>√200(1-200/n))

Substituting
200 + 1.5 </span>√200(1-200/n))
By inspection, if the value of n is 200, then the radical will result to the value of 1. Only by increasing the value of n greater than 200 will the radical result to a value of less than 1 and decreasing the spread of the mean.
The answer is
the minimum is 201
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2 years ago
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Whitepunk [10]
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