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2 years ago

Solve this system to determine the number of solutions 7x + 12 = 2(x + 6)

Mathematics

1 answer:

gladu [14]2 years ago

4 0

One solution, the answer is x = 0.

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Scott is on his school's academic team. On average, it takes Scott 4 minutes, with a standard deviation of 0.25 minutes, to solv

uysha [10]

Answer:

15.87% is the chance that Scott takes more than 4.25 minutes to solve a problem at an academic bowl.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 4 minutes

Standard Deviation, σ = 0.25 minutes

We standardize the given data.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(more than 4.25 minutes to solve a problem)

$P( x > 4.25) = P( z > \displaystyle\frac{4.25 - 4}{0.25}) = P(z > 1)$

$= 1 - P(z \leq 1)$

Calculation the value from standard normal z table, we have,

$P(x > 4.25) = 1 - 0.8413 = 0.1587 = 15.87\%$

Thus,15.87% is the chance that Scott takes more than 4.25 minutes to solve a problem at an academic bowl.

8 0

2 years ago

|(1)

Yanka [14]

So first you would divide 1950/6 to find the amount for one year of their age.
Then you would multiply that by the ages, which should get you 4 numbers, then you all those numbers together. Try 9750.

3 0

2 years ago

Sally divided her 48 spools of thread evenly into six boxes. How many spools of thread did she put into each box?

lidiya [134]

Answer:

8 spools

Step-by-step explanation:

48 divided by 6

8 0

2 years ago

Read 2 more answers

Its upside down but what are the answers to all of the equations?

elena-14-01-66 [18.8K]

Answer: here I just fliped it

3 0

2 years ago

Read 2 more answers

FOR MANY POINTSish

dangina [55]

x will represent the first unknow number

6x will represent the second number

the two numbers together will equal 21

6x + x = 21 combine like terms

7x =21 divide both sides by 7

x =3

Hope that helps.

brainliest is always appreciated.

4 0

3 years ago