All categories

3 years ago

Solve using quadratic formula.

Mathematics

1 answer:

Kazeer [188]3 years ago

7 0

Answer:

Step-by-step explanation:

Just use the quadratic formula

You might be interested in

Billy buys light bulbs in packs of 8 for $20. The shipping cost is $10 regardless of the number of packs bought. Billy has only

kirill115 [55]

Answer:

Step-by-step explanation:

He can buy 5 boxes of light bulbs..

20 x 5= 100

He only has 120 to spend - the shipping = 110

He can't get another box of lightbulbs. Therefor he can only buy 5!

7 0

3 years ago

Read 2 more answers

Please help me out with this i only have a couple more hours to turn this in please

Alborosie

Answer:

H = (1,4)

I = (-4,2)

J = (2,-3)

8 0

3 years ago

Read 2 more answers

The ages (in years) and weights (in pounds) of all wide receivers for a football team are listed. Find the coefficient of variat

IceJOKER [234]

Answer:

The coefficient of variation for the weight and age are 5.9% and 10.6%.

Step-by-step explanation:

The coefficient of variation (CV) is well defined as the ratio of the standard deviation to the mean. It exhibits the degree of variation in association to the mean of the population.

The formula to compute the coefficient of variation is:

$CV=\frac{\sigma}{\mu}\times 100\%$

Here σ = standard deviation and µ = mean.

Compute the mean and standard deviations of the two data set in Excel using the following functions.

Mean=AVERAGE()

Standard deviation=STDEV.S()

Consider the Excel sheet attached.

The mean and standard deviation of weight are:

Mean = 202, Standard deviation = 11.87

And the mean and standard deviation of weight are:

Mean = 25.88, Standard deviation = 2.75

Compute the coefficient of variation for the weight as follows:

$CV_{weight}=\frac{\sigma}{\mu}\times 100\%$

$=\frac{11.87}{202}\times 100\%\\\\=5.87624\\\\=5.9\%$

Compute the coefficient of variation for the age as follows:

$CV_{age}=\frac{\sigma}{\mu}\times 100\%$

$=\frac{2.75}{25.88}\times 100\%\\\\=10.62597\\\\=10.6\%$

Thus, the coefficient of variation for the weight and age are 5.9% and 10.6%.

8 0

3 years ago

How many liters of 80% alcohol solution and 30% alcohol solution must be mixed to obtain 15 liters of 50% alcohol solution?

Margaret [11]

set up a table (multiply across and add down - <em>don't add the middle column). Use the equation created by the "Total" row to solve for the variable.</em>

Quantity (times) % equals Total

Sol'n 1: x * .80 = (x)(.8)

Total: 15 * .50 = .8x + .3(15 - x)

15(.5) = .8x + 4.5 - .3x

7.5 = .5x + 4.5

3.0 = .5x

6 = x

Answer: 6 liters of 80% and 9 liters of 30%

5 0

3 years ago

The area of this rectangle is 5x^2. What does the coefficient 5 mean in terms of the problem

Vlada [557]

well if the area of rectangle is 5x² ... and x² has a value here ... so the coefficient 5 means that the answer is 5 × x²....

in other words ... we just have to multiply the value of x² with 5

8 0

4 years ago