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Zielflug [23.3K]
3 years ago
6

Consider the figure below. Which congruence transformation maps ABCD to A"B"C"D"?

Mathematics
2 answers:
Dafna1 [17]3 years ago
8 0

Answer:

Should be b

Step-by-step explanation:

adelina 88 [10]3 years ago
7 0

Answer:

A

Step-by-step explanation:

I just took the test the one answer above is incorrect.

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HELP ME PLZ AND IF YOU HELP ME 10 POINTS
mafiozo [28]

Answer:

3(c+4)

Step-by-step explanation:

It would usually be 3 x 4, but since there is a variable, it can`t be multiplied (unless you know what the value of the variable is). Thus the expression is 3(c+4).

6 0
3 years ago
Read 2 more answers
What is the value of y when x=3
notsponge [240]
The value of Y will equal Zero
7 0
3 years ago
Is this a function? <br><br> (1,1) , (2,2) , (3,5) , (4,10) , (5, 15)
yan [13]

Answer:yes

Step-by-step explanation:

6 0
3 years ago
An insurance company works with two auto repair shops and wants to compare their prices. Company officials randomly select 12 da
Grace [21]

Answer:

C) H0:μd=0 and Ha:μd≠ 0

Null hypothesis: \mu_d = 0

Alternative hypothesis: \mu_d \neq 0

Step-by-step explanation:

A paired t-test is used to compare two population means where you have two samples in  which observations in one sample can be paired with observations in the other sample. For example  if we have Before-and-after observations (This problem) we can use it.  

Let put some notation  

x=value for the first shop , y = value for the second shop

The system of hypothesis for this case are:

Null hypothesis: \mu_y- \mu_x = 0

Alternative hypothesis: \mu_y -\mu_x \neq 0

Or equivalently :

Null hypothesis: \mu_d = 0

Alternative hypothesis: \mu_d \neq 0

Since we define the difference d_i=y_i-x_i and we obtain this:

The second step is calculate the mean difference  

\bar d= \frac{\sum_{i=1}^n d_i}{n}

The third step would be calculate the standard deviation for the differences, and we got:

s_d =\frac{\sum_{i=1}^n (d_i -\bar d)^2}{n-1}

The 4 step is calculate the statistic given by :

t=\frac{\bar d -0}{\frac{s_d}{\sqrt{n}}}=t_{calculated}

The next step is calculate the degrees of freedom given by:

df=n-1=12-1=11

Now we can calculate the p value, since we have a two tailed test the p value is given by:

p_v =2*P(t_{(11)}>|t_{calculated}|)

C) H0:μd=0 and Ha:μd≠ 0

5 0
3 years ago
5(14x)+1(8x)+2(6x)+2(10x)+4(7x)=1626.35<br> X=?
densk [106]

Answer:

11.78

Step-by-step:

78x + 8x + 12x + 20x + 28x

78x + 32x + 28x

= 138x

1626.35/138

= 11.78

8 0
3 years ago
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