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Anika [276]
2 years ago
15

If it doesn't give me the perimeter, how do i find x from this? thank you!​

Mathematics
1 answer:
Mariulka [41]2 years ago
6 0

The way the angles are labeled tell you that they are all congruent. The two triangles you see here also share the side that joins them. Then by the angle-side-angle postulate, the two triangles are congruent, so x + 23 = 13, or x = -10.

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Question 2
Oliga [24]

Answer:

9

Step-by-step explanation:

you want the trinomial (x*x - 6x + __ ) to be written as a binomial squared.

So we would need to realize that the constant would be equal to (-6/2)^2  =(-3)^2 = 9

We have completed the square.

f(x) = 4*( x - 3)^2  + 20   is now in Vertex Form

6 0
3 years ago
ASAP. Look at the picture. Answer choices are: A) the spring has no stretch when a force of 1 pound is applied. B) the spring st
Katyanochek1 [597]

Answer:

D) the spring has a length of 1 inch when no force is applied

3 0
3 years ago
Bo paid bills with 1/2 of his paycheck snd put 1/5 of the remainder in savings. The rest of his paycheck he divided equally amon
Lana71 [14]
For college, 1-1/2-1/5 = 3/10. Divided by 3 children, 3/10 /3 = 1/10

B. 400 = 1/10 of the total (from above), so 400 = x/10. x = 400*10 = 4000
6 0
3 years ago
Travel time data is collected on an arterial. With 30 runs, an average travel time of 152 seconds is computed over the 2.0 miles
o-na [289]

Answer:

a

 The 95% confidence bounds is  145.80 <  \mu <   158.19

b

It was not necessary to make any assumption about the shape of the travel  time distribution

Step-by-step explanation:

From the question we are told that

 The sample size is  n =  30  

  The sample mean  is  \=x = 152

   The standard deviation is  \sigma =  17.3 \  second

From the question we are told the confidence level is  95% , hence the level of significance is    

      \alpha = (100 - 95 ) \%

=>   \alpha = 0.05

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

   Z_{\frac{\alpha }{2} } =  1.96

Generally the margin of error is mathematically represented as  

      E = Z_{\frac{\alpha }{2} } *  \frac{\sigma }{\sqrt{n} }

=>    E =  1.96 *  \frac{17.3 }{\sqrt{30} }

=>     E = 6.19  

Generally 95% confidence bounds  is mathematically represented as  

      \= x -E <  \mu <  \=x  +E

=>  152  -6.19 <  \mu <  152  -6.19

=> 145.80 <  \mu <   158.19

This 95% confidence bounds show that there is 95% confidence that the true mean lies within this bound hence there is it was not necessary to make any assumption about the shape of the travel  time distribution

5 0
2 years ago
which of th following are characteristics of the reciprocal parent functiona. it has a horizontal asymptote at y=0b. it passes t
Tcecarenko [31]
All of the optiona are characteristics of the reciprocal parent function except option b. (i.e. the reciprocal parent function do not pass through the point (1, 0)
8 0
3 years ago
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