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
Nat2105 [25]
3 years ago
6

Explain the difference in meaning between I-3I and -3.

Mathematics
2 answers:
dexar [7]3 years ago
7 0
|-3| is an absolute value. This means it will always be positive. -3 is an integer and is negative.
Anastaziya [24]3 years ago
7 0
|-3| is absolute value because of the bars so it is equal to 3. -3 is still-3 so they are the additvr inverse
You might be interested in
Can someone please help me with comparing function
Minchanka [31]
Understand that a function<span> is a rule that assigns to each input exactly one output. The graph of a </span>function<span> is the set of ordered pairs consisting of an input and the corresponding output.</span>
8 0
3 years ago
Yeah help guys today was way to stressful to do this shi right now
katrin [286]

Answer:

15.3125

Step-by-step explanation:

i gotchu

8 0
3 years ago
The article "Students Increasingly Turn to Credit Cards" (San Luis Obispo Tribune, July 21, 2006) reported that 37% of college f
Sloan [31]

Answer:

Step-by-step explanation:

Hello!

There are two variables of interest:

X₁: number of college freshmen that carry a credit card balance.

n₁= 1000

p'₁= 0.37

X₂: number of college seniors that carry a credit card balance.

n₂= 1000

p'₂= 0.48

a. You need to construct a 90% CI for the proportion of freshmen  who carry a credit card balance.

The formula for the interval is:

p'₁±Z_{1-\alpha /2}*\sqrt{\frac{p'_1(1-p'_1)}{n_1} }

Z_{1-\alpha /2}= Z_{0.95}= 1.648

0.37±1.648*\sqrt{\frac{0.37*0.63}{1000} }

0.37±1.648*0.015

[0.35;0.39]

With a confidence level of 90%, you'd expect that the interval [0.35;0.39] contains the proportion of college freshmen students that carry a credit card balance.

b. In this item, you have to estimate the proportion of senior students that carry a credit card balance. Since we work with the standard normal approximation and the same confidence level, the Z value is the same: 1.648

The formula for this interval is

p'₂±Z_{1-\alpha /2}*\sqrt{\frac{p'_2(1-p'_2)}{n_2} }

0.48±1.648* \sqrt{\frac{0.48*0.52}{1000} }

0.48±1.648*0.016

[0.45;0.51]

With a confidence level of 90%, you'd expect that the interval [0.45;0.51] contains the proportion of college seniors that carry a credit card balance.

c. The difference between the width two 90% confidence intervals is given by the standard deviation of each sample.

Freshmen: \sqrt{\frac{p'_1(1-p'_1)}{n_1} } = \sqrt{\frac{0.37*0.63}{1000} } = 0.01527 = 0.015

Seniors: \sqrt{\frac{p'_2(1-p'_2)}{n_2} } = \sqrt{\frac{0.48*0.52}{1000} }= 0.01579 = 0.016

The interval corresponding to the senior students has a greater standard deviation than the interval corresponding to the freshmen students, that is why the amplitude of its interval is greater.

8 0
3 years ago
Help pls , graph and linear equations
drek231 [11]

Answer:

4- -1=3

Step-by-step explanation:

7. m=3 (4,-1)

do the () inside first so

4- -1 = 3

hope this helps for number 7

5 0
2 years ago
Luetta is shopping and find a $200 video game that is mark down by 5% how much will be taken off the price in dollars
viva [34]

Answer:

$10.00

Step-by-step explanation:

$200 x . 05 = $10.00

5 0
3 years ago
Read 2 more answers
Other questions:
  • How do I set up 37 and 43
    6·1 answer
  • What is the slope of the line?<br><br> y = -5x - 9<br><br> Slope =<br><br> Help Please
    9·1 answer
  • Order these fractions from least to greatest 5/8 3/4 1/2 and 9/16
    6·2 answers
  • Write 0.001742 in scientific notation.
    12·2 answers
  • You really want to earn an a in a class, but you still need to take one more test. suppose that your previous test scores are 85
    12·1 answer
  • The population of Hannah’s town increased from 1,500 to 2,600 in five years. At what rate is the population increasing?
    14·1 answer
  • 30 is 6 multiplied by a number Y as a equation
    5·1 answer
  • The Johnsons spent a total of ​$69.96 for dinner at their favorite restaurant last night. If this cost included a ​20%​ tip, how
    5·1 answer
  • PLEASE HELP
    8·1 answer
  • A teacher used the change of base formula to determine whether the equation below is correct. (log Subscript 2 Baseline 10) (log
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!