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Sindrei [870]
1 year ago
12

Factor and solves the polynomial x(to the 2nd power) + 5x + 4 = 0 x= (blank) and x= (blank)

Mathematics
1 answer:
zubka84 [21]1 year ago
3 0

Answer:

x = -4~ \text{and}~ x = -1

Step-by-step explanation:

~~~~~~~x^2 +5x +4  =0\\\\\implies x^2 +4x +x  +4 = 0\\\\\implies x(x+4) +(x+4) = 0\\\\\implies (x+4)(x+1) = 0\\\\\implies x = -4,~~ x = -1

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PLEASE HELP! PLEASE!!!!!!!
Sloan [31]

Using the equation of the proportional relationship:

Average rate of speed = 60

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Distance travelled in 2.5 hrs = 150 miles

<h3>What is a Equation of a Proportional Relationship?</h3>

A equation of a proportional relationship models the relationship between two variables, x and y, that has a constant of k. It is expressed as y = kx.

Given the following:

Equation: d = 60t

d = distance in miles

t = time in hours

Average rate of speed for the bus = k = 60

Time (t) it would take to go 300 miles (d):

300 = 60(t)

300/60 = t

t = 5 hours

Distance (d) it would travel in 2.5 hours (t):

d = 60(2.5)

d = 150 miles

Learn more about the equation of a proportional relationship on:

brainly.com/question/6869319

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8 0
2 years ago
An education firm measures the high school dropout rate as the percentage of 16 to 24 year olds who are not enrolled in school a
posledela

Answer:

The value of the test statistic z = -0.6606

Step-by-step explanation:

From the question we are told that

      The high dropout rate is \mu  = 6.1%  = 0.061

      The  sample size is  n = 1000

       The  number of dropouts x = 56

       The probability of having a dropout in 1000 people  \= x  = \frac{56}{1000}  =  0.056

Now setting up Test Hypothesis

 Null  H_o :  p = 0.061

 Alternative  H_a : p < 0.061        

The Test statistics is mathematically represented as

                 z = \frac{\= x - p}{\sqrt{\frac{p(1 -p)}{n} } }

substituting values

               z = \frac{0.056 - 0.061}{\sqrt{\frac{0.061(1 -0.061)}{1000} } }

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2 years ago
A company rents bicycles to customers. The company charges an initial fee
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The hourly rate is $3 a hour with a $2 initial fee.
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2 years ago
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OLEGan [10]
The first answer is 40 second 65 third 56 and then fourth 90
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2 years ago
How to calculate percentile.
Law Incorporation [45]

Answer:

Step-by-step explanation:

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