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3 years ago

PLEASE HURRY what is the value of (-x)-y if x= (-1/5) and y=(-7/15)

Mathematics

2 answers:

tatuchka [14]3 years ago

7 0

Answer:

-10/15

Step-by-step explanation:

-1/5-7/15

-3/15-7/15

-10/15

Please give me brainliest!

grigory [225]3 years ago

6 0

-10/15 is the answer

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3 years ago

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3 years ago

Can someone get a ruler or tape measurer or something and measure your forearm and left foot? It is for a math assignment cause

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Yes as long as you can measure in inches or centimeters.

Step-by-step explanation:

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3 years ago

Major league baseball salaries averaged $3.26 million with a standard deviation of $1.2 million in a the past year. Suppose a sa

strojnjashka [21]

Answer:

0.015 is the approximate probability that the mean salary of the 100 players was less than $3.0 million

Step-by-step explanation:

We are given the following information in the question:

Mean, μ =$3.26 million

Standard Deviation, σ = $1.2 million 100

We assume that the distribution of salaries is a bell shaped distribution that is a normal distribution.

Formula:

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

Standard error due to sampling =

$\displaystyle\frac{\sigma}{\sqrt{n}} = \frac{1.2}{\sqrt{100}} = 0.12$

P(mean salary of the 100 players was less than $3.0 million)

$P(x < 3) = P(z < \displaystyle\frac{3-3.26}{0.12}) = P(z < -2.167)$

Calculating the value from the standard normal table we have,

$P(Z < -2.167) = 0.015 \\P( x < 3) = 1.5\%$

0.015 is the approximate probability that the mean salary of the 100 players was less than $3.0 million

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3 years ago

Find 3 1/6 + (-4 1/3).

jeka94

Answer:

-1 1/6

Step-by-step explanation:

$3\frac{1}{6} + (-4\frac{1}{3} )$

Convert the mixed numbers into improper fractions

$\frac{19}{6} + (-\frac{13}{3} )$

Apply the rule: a + (-b) = a - b

$\frac{19}{6} + (-\frac{13}{3} ) = \frac{19}{6} - \frac{13}{3}$

The Least Common Multiplier of 6 and 3 is 6

Adjust the fractions on the LCM

$\frac{19}{6} - \frac{26}{3}$

Apply the Fraction Rule: $\frac{a}{c} -\frac{b}{c} = \frac{a - b}{c}$

$\frac{19 - 26}{6}$

Subtract the numbers

$\frac{-7}{6}$

Apply the Fraction Rule: $\frac{-a}{b} = - \frac{a}{b}$

$-\frac{7}{6}$

Convert improper fraction into a mixed number

$-1\frac{1}{6}$

Hope this Helps :)

3 0

2 years ago