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Alenkasestr [34]
2 years ago
14

Compare the graphs of y = |x + 2| and y = -|x + 1|. Which statement is true? a.The value of coefficient a is +1 in both equation

s. b.The two graphs are symmetric along x-axis. c.Their vertices lie on the x-axis.
d.The graphs open in an upward direction.
Mathematics
2 answers:
AlekseyPX2 years ago
7 0
C because it is the only one that is not wrong
baherus [9]2 years ago
4 0
C.Their vertices lie on the x-axis.
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If the relation is a function, list the domain and range. If the relation is not a function, choose "not a function". C = {(9, 1
ICE Princess25 [194]

Answer:

<h2>Domain: {9, 8, 7, -5}</h2><h2>Range: {1, -3, 5, 3}</h2>

Step-by-step explanation:

The function is a special relationship where each input has a single output.

We have C = {(9, 1); (8, -3); (7, 5); (-5, 3)}.

It's a function:

each values of x: 9, 8, 7, -5 has one value of y: 1, -3, 5, 3.

The doimain is set os x: {9, 8, 7, -5}.

The range is set of y: { 1, -3, 5, 3}.

6 0
2 years ago
Read 2 more answers
Seven kilometers is how many meters​
Sergeeva-Olga [200]

Answer:

Step-by-step explanation:

Hello,

1km=1000m, right?

so 7km = 7 * 1000 m = 7000m

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4 0
3 years ago
Read 2 more answers
Find the number of boxes needed, x, for 42 granola bars. ​
serg [7]

The question is incomplete:

Find the number of boxes needed, x, for 42 granola bars. ​

The table with the information is attached.

Answer:

The number of boxes needed for 42 granola bars is 7.

Step-by-step explanation:

Since the table shows that for 12 granola bars 2 boxes are needed, you can use a rule of three with this information to find the number of boxes needed for 42 granola bars:

12 granola bars  → 2 boxes

42 granola bars →      x

x=(42*2)/12

x=84/12

x=7

According to this, the answer is that the number of boxes needed for 42 granola bars is 7.

8 0
3 years ago
I NEED HELP ASAP!!<br> like right now plz I will do anything
shepuryov [24]

Answer:

Number 5. = 69

Number 8. = 19

Step-by-step explanation:

3 0
2 years ago
An educator claims that the average salary of substitute teachers in school districts is less than $60 per day. A random sample
valentina_108 [34]

Answer:

t=\frac{58.875-60}{\frac{5.083}{\sqrt{8}}}=-0.626    

The degrees of freedom are given by:

df=n-1=8-1=7  

The p value would be given by:

p_v =P(t_{(7)}  

Since the p value is higher than 0.1 we have enough evidence to FAIl to reject the null hypothesis and we can't conclude that the true mean is less than 60

Step-by-step explanation:

Information given

60, 56, 60, 55, 70, 55, 60, and 55.

We can calculate the mean and deviation with these formulas:

\bar X= \frac{\sum_{i=1}^n X_i}{n}

s=\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

Replacing we got:

\bar X=58.875 represent the mean

s=5.083 represent the sample standard deviation for the sample  

n=8 sample size  

\mu_o =60 represent the value that we want to test

\alpha=0.1 represent the significance level

t would represent the statistic

p_v represent the p value

Hypothesis to test

We want to test if the true mean is less than 60, the system of hypothesis would be:  

Null hypothesis:\mu \geq 60  

Alternative hypothesis:\mu < 60  

The statistic would be given by:

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

Replacing the info we got:

t=\frac{58.875-60}{\frac{5.083}{\sqrt{8}}}=-0.626    

The degrees of freedom are given by:

df=n-1=8-1=7  

The p value would be given by:

p_v =P(t_{(7)}  

Since the p value is higher than 0.1 we have enough evidence to FAIl to reject the null hypothesis and we can't conclude that the true mean is less than 60

3 0
3 years ago
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