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
Mamont248 [21]
3 years ago
14

Find the product. (z − 2)(z + 2)

Mathematics
2 answers:
VladimirAG [237]3 years ago
7 0

Answer:

z^2-4

Step-by-step explanation:

z•z and 2^2=4

z^2-4

Naily [24]3 years ago
5 0
Answer: z^2-4
Explanation: z•z and 2^2=4
z^2-4
You might be interested in
8
blagie [28]

Answer:

The new function is g(x) = x² +1

Step-by-step explanation:

<u><em>Explanation:-</em></u>

Given that the function f(x) = x²

From graph ,

The parabola  y = x² is shifting to up with '1' units

                    y = x² +1

The new function is g(x) = x² +1

<u><em>Verification:-</em></u>

    y = x²+1

Put x=0 ⇒ y =1

The point (0,1) lies on the parabola y = x²+1

similarly put x =1 and y = 2

The Point (1,2) lies on the Parabola y = x²+1

∴ The new graph  y = x²+1

3 0
3 years ago
Drag each label to the correct location on the table. Each label can be used more than once, but not all labels will be used.
Natalka [10]

Answer:

what lable i dont see nothing

Step-by-step explanation:

7 0
3 years ago
2343 x 23.56 + 94217.23452 / 21421 - 512
monitta

Answer:

54693.47836

Step-by-step explanation:

Order of operations PEMDAS

Do the multiplication and division first - each separately

Then add and subtract the answer you get to get the final answer.

5 0
3 years ago
Read 2 more answers
Select the correct answer.
Rina8888 [55]
A - actuary...........that is the answer
6 0
3 years ago
Read 2 more answers
Based on an indication that mean daily car rental rates may be higher for Boston than for Dallas, a survey of eight car rental c
Elina [12.6K]

Answer:

t=\frac{(47 -44)-(0)}{3\sqrt{\frac{1}{8}+\frac{1}{9}}}=2.058

The degrees of freedom are:

df=8+9-2=15

And the p value would be:

p_v =P(t_{15}>2.058) =0.0287

Since we have a p value lower than the significance level given of 0.05 we can reject the null hypothesis and we can conclude that the true mean for car rental rates in Boston are significantly higher than those in Dallas

Step-by-step explanation:

Data given

n_1 =8 represent the sample size for group Boston

n_2 =9 represent the sample size for group Dallas

\bar X_1 =47 represent the sample mean for the group Boston

\bar X_2 =44 represent the sample mean for the group Dallas

s_1=3 represent the sample standard deviation for group Boston

s_2=3 represent the sample standard deviation for group Dallas

We can assume that we have independent samples from two normal distributions with equal variances and that is:

\sigma^2_1 =\sigma^2_2 =\sigma^2

Let the subindex 1 for Boston and 2 for Dallas we want to check the following hypothesis:

Null hypothesis: \mu_1 \leq \mu_2

Alternative hypothesis: \mu_1 > \mu_2

The statistic is given by this formula:

t=\frac{(\bar X_1 -\bar X_2)-(\mu_{1}-\mu_2)}{S_p\sqrt{\frac{1}{n_1}+\frac{1}{n_2}}}

Where t follows a t student distribution with n_1+n_2 -2 degrees of freedom and the pooled variance S^2_p is given by this formula:

\S^2_p =\frac{(n_1-1)S^2_1 +(n_2 -1)S^2_2}{n_1 +n_2 -2}

Replacing we got:

\S^2_p =\frac{(8-1)(3)^2 +(9 -1)(3)^2}{8 +9 -2}=9

And the deviation would be just the square root of the variance:

S_p=3

The statitsic would be:

t=\frac{(47 -44)-(0)}{3\sqrt{\frac{1}{8}+\frac{1}{9}}}=2.058

The degrees of freedom are:

df=8+9-2=15

And the p value would be:

p_v =P(t_{15}>2.058) =0.0287

Since we have a p value lower than the significance level given of 0.05 we can reject the null hypothesis and we can conclude that the true mean for car rental rates in Boston are significantly higher than those in Dallas

5 0
3 years ago
Other questions:
  • The difference in the price of 2 TVs is $217.45. If one TV costs $450.50, which of the answer choices could represent the price
    7·1 answer
  • Which of the options represents the resulting equation after an equivalent expression for y is substituted into the second equat
    8·2 answers
  • What is the value of each digit number of 58
    12·1 answer
  • P is the centroid of △JLN, LO⊥JN, ∠NJK≅∠JNM, OP=8, OJ=15. Find the perimeter of △JLN.
    10·1 answer
  • Answer the following:
    15·1 answer
  • Help me plssss hurry!!!!Which expressions are equivalent to 6+(-4) - 5?
    6·1 answer
  • Helpppp pleaseeeee.....-.....
    10·1 answer
  • In a long-distance relay contest, Team A completed the race in 5 2/3 hours, and Team B completed the race in 294 minutes. How mu
    13·1 answer
  • Rewrite the equation below in Graphing Form:<br> 2.<br> y = x2 8x + 31
    6·2 answers
  • A vendor bought 10 dozen eggs at the rate of rupees 22 oer dozen. Six of the eggs were rotten. He sold the remaining eggs at the
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!