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yKpoI14uk [10]
2 years ago
11

Use substitution to determine if 0 is a solution of 5x = 5.

Mathematics
1 answer:
natulia [17]2 years ago
3 0

Answer:

No

Step-by-step explanation:

<h2>0      5(x)=5 </h2>

Substitution:

5(0)=5

Anything times 0 equals 0 so

does 0=5?

No

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Find the inverse of the function.<br> f(x) = 5x - 5<br> f^-1(x) = _____ √
Veronika [31]

Answer:

16

Step-by-step explanation:

7 0
2 years ago
Work out m and c for the line:<br> 2x + 3y +1=0 <br><br>m=<br>c =​
Sergio [31]

Answer:

m = - \frac{2}{3} , c = - \frac{1}{3}

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Given

2x + 3y + 1 = 0 ( subtract 2x + 1 from both sides )

3y = - 2x - 1 ( divide terms by 3 )

y = - \frac{2}{3} x - \frac{1}{3} ← in slope- intercept form

with m = - \frac{2}{3} and c = - \frac{1}{3}

4 0
2 years ago
What does the line in a scatter plot mean?
irakobra [83]

Answer:

the line represents the average slope in which the dots line up. in other words, it shows where most of the options/solutions are on the plot

Step-by-step explanation:

nice pfp

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
Please provide all steps given to find the answer. Thanks!!!<br> Simplify: 5(2x+9)²
gulaghasi [49]

Answer:

20x²+180x + 405

Step-by-step explanation:

Follow PEMDAS to know what you do first

square (2x + 9) by foiling

(2x+9) (2x + 9)

= 4x²+ 36x + 81

Multiply by 5

20x²+180x + 405

4 0
3 years ago
Read 2 more answers
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