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
seropon [69]
3 years ago
14

Graph each function y=3x2-7

Mathematics
1 answer:
liq [111]3 years ago
7 0
What you need to do step 1 y=6-7

step 2 y=1

then you make an ordered pair with the x and y

then graph
You might be interested in
In a group of​ bird-watchers, 4 out of every 5 people have seen a bald eagle. What percent of the​ bird-watchers have not seen a
Andreas93 [3]

Answer:

20%

Step-by-step explanation:

4/5=.80

1-.80=.20

.20=20%

4 0
3 years ago
What could be a possible solution to <br> 4x &gt; 24
mr_godi [17]

Answer:

x>6

hope it helps.........

7 0
2 years ago
Read 2 more answers
Put the equation y =x^2-8x + 12 into the form y(x-h)^2+k<br> Answer: y =
zlopas [31]

Answer:

<em>y = (x - 4)² - 4 </em>

Step-by-step explanation:

y = x² - 8x + 12

y = ( x² - 2(4)x + 4² ) - 4² + 12

<em>y = (x - 4)² - 4</em>

7 0
2 years ago
Suppose that 76% of Americans prefer Coke to Pepsi. A sample of 80 was taken. What is the probability that at least seventy perc
Anastasy [175]

Answer:

C. 0.896

Step-by-step explanation:

We use the binomial approximation to the normal to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

Normal probability distribution

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value 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. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

When we are approximating a binomial distribution to a normal one, we have that \mu = E(X), \sigma = \sqrt{V(X)}.

In this problem, we have that:

n = 80, p = 0.76

So

E(X) = np = 80*0.76 = 60.8

\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{80*0.76*0.24} = 3.82

What is the probability that at least seventy percent of the sample prefers Coke to Pepsi?

0.7*80 = 56.

This probability is 1 subtracted by the pvalue of Z when X = 56. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{56 - 60.8}{3.82}

Z = -1.26

Z = -1.26 has a pvalue of 0.1040.

1 - 0.1040 = 0.8960

So the correct answer is:

C. 0.896

4 0
3 years ago
Which of the sets of ordered pairs represents a function?
yuradex [85]
<span>A function assigns each input exactly one output... x-values don't repeat<span>A and B are both functions</span></span>
6 0
3 years ago
Read 2 more answers
Other questions:
  • Jorge needs to ship a thin metal rod to a metalworking shop. The only boxes available for shipping are 7-inch cubes. To the near
    6·2 answers
  • What is the answer to: 3 x 4 + 15- 19 x2037? help
    5·1 answer
  • Factor completely, the expression: 2x^3-2x^2-12x
    6·1 answer
  • I need help please?!!!!!!!!
    9·2 answers
  • An athlete trains for 75 mins each day for as many days as possible write an equation that relates the number of days d that the
    14·1 answer
  • I need someone to help me
    13·1 answer
  • O nenes help please
    11·1 answer
  • I can't do this, can someone explain​
    10·2 answers
  • What is 2 1/6 ​ Plus 1 2/3? pls help.
    13·2 answers
  • What is LCM of 18,24,36,45
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!