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
Zolol [24]
3 years ago
10

Can someone please help me I don’t get this (Due today)

Mathematics
1 answer:
Inga [223]3 years ago
8 0

Answer:

Which grade's book exercise is this?

You might be interested in
Number of Text Messages a Day A random sample of n = 755 US cell phone users age 18 and older in May 2011 found that the average
Alexeev081 [22]

Answer:

The 95% confidence interval is  (29.54 - 53.46}

Step-by-step explanation:

given data:

\hat X = 41.5

Se = 6.1

n = 755

a) best estimate  \hat x = 41.5

b) at 95% confidence interval

\alpha = 1- 0.95 = 0.05

\alpha /2 = 0.025

z_{\alpha/2} = z_{0.025} = 1.96

at 95% confidence interval for [/tex]\mu[/tex]

\hat x \pm z_{\alpha /2} \times Se

41.5 \pm 1.96\times 6.1

41.5 \pm 11.96

The 95% confidence interval is  (29.54 - 53.46}

7 0
3 years ago
Find the inverse of the function. f(x) = 7x + 8
lana66690 [7]

Answer:

\frac{x-8}{7}

Step-by-step explanation:

A way to find the inverse function is to swap the x and y (f(x)) in the equation.

y = 7x + 8\\x = 7y + 8\\x-8 = 7y\\y = \frac{x-8}{7}

We can check that it is an inverse function by using a property of inverse functions:

f(g(x)) = x

If we plug in the f(x) function into the variable x of the inverse function, we should end up with x

y = \frac{(7x + 8) - 8}{7}\\y = \frac{7x}{7} \\y = x\\

It checks out!

4 0
3 years ago
The diameter of a round patio is 16 feet.Which expression can be used to find the patio’s circumference in feet?
Delicious77 [7]

Answer: 16*pi

Step-by-step explanation: The equation for diameter is pi*diameter. Since you already know the diameter, just plug it in.

8 0
3 years ago
Y’all I need help fast
vitfil [10]

Answer:

C

All Real Numbers, this is because it has infinitely MANY solutions.

Step-by-step explanation:

7 0
3 years ago
Geralds baby brother spends 7/8 ofhis day sleeping. How many hours does his baby brother sleep
Effectus [21]
His baby brother sleeps 21 hours.
There's a total of 24 hours in a day so you can divide by 8. That means 1/8 of the day is equal to 3 hours, so 7 times 3 hours equals 21 hours
6 0
3 years ago
Other questions:
  • What is -2/3 as a decimal
    11·2 answers
  • Lines a and b are parallel.
    8·1 answer
  • A work cell is scheduled to build 120 digital light processor (dlp) assemblies each week. these assemblies are later installed i
    10·1 answer
  • Levi would like to use a credit card to make a $3000 purchase. He is considering two credit options. The first requires
    14·1 answer
  • Which is the graph of x^2/9+y^2/16=1
    10·1 answer
  • Ronnie misses the school bus 1 out of every 30 school days. He sets up the proportion 1/30=180/x to predict how many days he wil
    7·1 answer
  • Three of the angles of a quadrilateral are 1200, 480 and 920.<br> What is the size of the 4th angle?
    13·1 answer
  • What is jdjxjcjxjckckckckv<br> 2/3(I -6)=6
    8·1 answer
  • What is the result of adding the system of equations? Equation 1: 2x + y = 4 Equation 2: 3x - y = 6 A) 5x = 10 B) x = 5 C) x = 1
    12·1 answer
  • Hello! Happy Sunday! Got a Math question for you, anyone willing to try? Work and answer please! I think the answer is going to
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!