1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
navik [9.2K]
3 years ago
6

Type in the missing terms in this sequence of square numbers.

Mathematics
1 answer:
dezoksy [38]3 years ago
8 0

Answer:

16, 49, 121

Step-by-step explanation:

You might be interested in
NEED DONE ASAP!!
almond37 [142]

Answer:

A. 3x^2 + 4 = 52

     3x^2 = 52 - 4

     3x^2 = 48

       x^2 = 48/3

       x^2 = 16

        x    = \sqrt{16}

        x = 4

B. x^2 - 121 = 0

     x^2  = 121

       x = \sqrt{121}

       x = 11

C. (b + 4 )2 = 49

    2b + 8 = 49

    2b  = 49 - 8

     2b = 41

        b = 41/2

3 0
3 years ago
An article presents a new method for timing traffic signals in heavily traveled intersections. The effectiveness of the new meth
Anna35 [415]

Answer:

With 89.9% we can say that the mean improvement is between 583.1 and 728.1 vehicles per hour.

Step-by-step explanation:

We are given that the effectiveness of the new method was evaluated in a simulation study. In 50 simulations, the mean improvement in traffic flow in a particular intersection was 655.6 vehicles per hour, with a standard deviation of 311.7 vehicles per hour.

A traffic engineer states that the mean improvement is between 583.1 and 728.1 vehicles per hour.

<em>Let </em>\bar X<em> = sample mean improvement</em>

The z-score probability distribution for sample mean is given by;

            Z =  \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } } ~ N(0,1)

where, \mu = mean improvement = 655.6 vehicles per hour

            \sigma = standard deviation = 311.7 vehicles per hour

            n = sample of simulations = 50

The Z-score measures how many standard deviations the measure is away from the mean. After finding the Z-score, we look at the z-score table and find the p-value (area) associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X.

Now, Probability that the mean improvement is between 583.1 and 728.1 vehicles per hour is given by = P(583.1 < \bar X < 728.1) = P(\bar X < 728.1) - P(\bar X \leq 583.1)

  P(\bar X < 728.1) = P( \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } } < \frac{728.1-655.6}{\frac{311.7}{\sqrt{50} } } ) = P(Z < 1.64) = 0.9495

  P(\bar X \leq 583.1) = P( \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } } \leq \frac{583.1-655.6}{\frac{311.7}{\sqrt{50} } } ) = P(Z \leq -1.64) = 1 - P(Z < 1.64)

                                                            = 1 - 0.9495 = 0.0505                      

<em />

<em>So, in the z table the P(Z </em>\leq<em> x) or P(Z < x) is given. So, the above probability is calculated by looking at the value of x = 1.64 in the z table which has an area of 0.9495.</em>

Therefore, P(583.1 < \bar X < 728.1) = 0.9495 - 0.0505 = 0.899 or 89.9%

Hence, with 89.9% we can say that the mean improvement is between 583.1 and 728.1 vehicles per hour.

6 0
3 years ago
Question 1
Elden [556K]
1. is B
2. is A
3. is C
4. is B
5. ? what graphs
4 0
3 years ago
Find the missing measure in each pair of similar shapes.
Vikki [24]
If your missing a sid but you have the other side opisite sides are the same
7 0
3 years ago
Can someone help me with Similar Triangle problems
Vlad [161]
Yes I might be able to help you
4 0
3 years ago
Other questions:
  • Plz help i dont know the answer
    7·1 answer
  • Need help pls asap. 40 points
    14·1 answer
  • Find the area of the shaded segment. Round your answer to the nearest square centimeter. Will make brainliest answer if correct
    9·1 answer
  • What are the numbers for pie I am in class right now tell me asap​
    9·2 answers
  • How does each multiplication compare to its corresponding division problem
    9·1 answer
  • Julia writes 2 fractions with the same denominator that have numerators 5 and 7. What could the denominator be if the sum is les
    13·1 answer
  • Which of the following correctly uses absolute value to show the distance between -70 and 13?
    11·1 answer
  • Marton finds a shirt on sale for 10% off at the department store. the original price was $20 marton also must pay the sales tax
    12·1 answer
  • Find the volume Help ASAP pleat
    6·2 answers
  • What are the domain and range of the function (x)=3/4x+5?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!