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sladkih [1.3K]
2 years ago
15

Need help with these two math problems

Mathematics
1 answer:
Gnom [1K]2 years ago
8 0

Answer:

y = (x - 1)(x - 3)

y = (x + 2)^2

Step-by-step explanation:

3)

Has roots at x = {1, 3}

y = (x - 1)(x - 3)

4)

Has double root at x = -2

y = (x + 2)^2

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What is the equation of the line.
Ymorist [56]

Answer:

y = 1/2x - 1

slope = 1/2

y-intercept is

(0,-1)

8 0
2 years ago
A plane can cover 9904 km in 8 hours how mucb distance will it cover in 1 hour?
bekas [8.4K]

In one hour the plane will cover a distance of 1238 km.

<h3>What is a linear equation?</h3>

  • A linear equation has one or two variables.
  • No variable in a linear equation is raised to a power greater than 1.
  • No variable is used as the denominator of a fraction.
  • A linear equation is defined as an equation that is written in the form of ax+by=c.
  • When solving the system of linear equations, we will get the values of the variable, which is called the solution of a linear equation.

solving this we will get the valve of Y is x is given.

calculation:-

today distance = 9904 km.

total time is taken = 8 hours.

∴total distance covered in one hour = 9904/8

                                                        = 1238 km.

Learn more about the equation here:- brainly.com/question/2972832

#SPJ2

5 0
1 year ago
Marcel and his 8 friends have a snow shoveling business. Last season, they earned a total of $2,240.64. How much
NemiM [27]
The answer is $248.96
there are 9 people dividing the money amongst them
please vote brainliest:)
5 0
1 year ago
Helppppppppppppppppppppppp please
Inga [223]
The answer would be 499.2 CM
6 0
2 years ago
The average gasoline price of one of the major oil companies in Europe has been $1.25 per liter. Recently, the company has under
Ann [662]

Answer:

t=\frac{1.20-1.25}{\frac{0.14}{\sqrt{49}}}=-2.50    

Step-by-step explanation:

Data given and notation  

\bar X=1.20 represent the sample mean given

\sigma = 0.14 represent the population standard deviation

n=49 sample size  

\mu_o =1.25 represent the value that we want to test

t would represent the statistic (variable of interest)  

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the true mean for the gasoline prices is lower than 1.25, the system of hypothesis would be:  

Null hypothesis:\mu \geq 1.25  

Alternative hypothesis:\mu < 1.25  

If we analyze the size for the sample is > 30 but we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:  

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

Calculate the statistic

We can replace in formula (1) the info given like this:  

t=\frac{1.20-1.25}{\frac{0.14}{\sqrt{49}}}=-2.50    

5 0
3 years ago
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