All categories

4 years ago

Wilma and Fred combined their model block stores to make one store. How can they change each

Mathematics

1 answer:

tatyana61 [14]4 years ago

4 0

Don’t no sorry but i think you should try some where else to see if they can help

You might be interested in

<img src="https://tex.z-dn.net/?f=x%20%2B%20y%20%20%3D%2014%5C%5C%202x%20%2B%204y%20%3D%2018" id="TexFormula1" title="x + y = 1

alexgriva [62]

Answer:

x = 19, y = -5

Step-by-step explanation:

x + y = 14 => x= 14-y

2x + 4y = 18 => 2(x+2y)=18 => x+2y=9

x+2y=9 => (14 - y) + 2y = 9

14 + y = 9 => y = -5

x + (-5) = 14 => x=19

5 0

3 years ago

The temperature of coffee served at a restaurant is normally distributed with an average temperature of 160 degrees Fahrenheit a

posledela

Answer:

The 20th percentile of coffee temperature is 155.4532 degrees Fahrenheit.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 160 degrees

Standard Deviation, σ = 5.4 degrees

We are given that the distribution of temperature of coffee is a bell shaped distribution that is a normal distribution.

Formula:

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

We have to find the value of x such that the probability is 0.2

$P( X < x) = P( z < \displaystyle\frac{x - 160}{5.4})=0.2$

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

$\displaystyle\frac{x - 160}{5.4} = -0.842\\\\x = 155.4532$

Thus,

$P_{20}=155.4532$

The 20th percentile of coffee temperature is 155.4532 degrees Fahrenheit.

7 0

3 years ago

Is this correct? I'm really confused xD

denpristay [2]

Yes, your current answer is correct. Divide each term by the divisor.

4 0

4 years ago

What is a 20% tip of $30

ser-zykov [4K]

$6!
10% is $3, you just move the decimal to the left one space, and that's 10%, so double is $6

5 0

4 years ago

Read 2 more answers

Solve and show work for ( +2 )(2+5)=0

Scorpion4ik [409]

(2) (2+5) = 14
2•2= 4
2•5= 10
4+10= 14

7 0

3 years ago