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
AnnyKZ [126]
2 years ago
8

Pls somebody help me, only right answers :(

Mathematics
1 answer:
klemol [59]2 years ago
7 0

Answer: (2*5.4*7)+(2*5*8)+(7*8)

Step-by-step explanation:

You might be interested in
HELP ME PLEASE I REALLY NEED IT!!!
alekssr [168]
6126!!!! You are welcome :) I just took this test today
8 0
2 years ago
Read 2 more answers
The brand manager for a brand toothpaste must plan a campaign designed to increase brand recognition. He wants to first determin
bulgar [2K]

We need to find out how many adults must the brand manager survey in order to be 90% confident that his estimate is within five percentage points of the true population percentage.

From the given data we know that our confidence level is 90%. From Standard Normal Table we know that the critical level at 90% confidence level is 1.645. In other words, Z_{Critical}=1.645.

We also know that E=5% or E=0.05

Also, since, \hat{p} is not given, we will assume that \hat{p}=0.5. This is because, the formula that we use will have \hat{p}(1-\hat{p}) in the expression and that will be maximum only when \hat{p}=0.5. (For any other value of \hat{p}, we will get a value less than 0.25. For example if, \hat{p} is 0.4, then 1-\hat{p}=0.6 and thus, \hat{p}(1-\hat{p})=0.24.).

We will now use the formula

n=(\frac{Z_{Critical}}{E})^2\hat{p}(1-\hat{p})

We will now substitute all the data that we have and we will get

n=(\frac{1.645}{0.05})^2\times0.5(1-0.5)

n=(32.9)^2\times0.25

n=270.6025

which can approximated to n=271.

So, the brand manager needs a sample size of 271

3 0
3 years ago
Dwayne hikes 60 miles in 3 days. At that rate, how many days does it take him to hike a total of 240 miles
NNADVOKAT [17]

12 days. 60 is a quarter of 240. So, multiply 60 by 4 to get 240.

7 0
3 years ago
Read 2 more answers
A triangle has a base of 54 cm. The height is unknown. Complete the equation that can be used to find the area, A, of the triang
Nookie1986 [14]

Answer:

Step-by-step explanation:

area=1/2×base×height

A=1/2×54×h=27h

4 0
3 years ago
How to turn 20/10 into a mixed number
Lady_Fox [76]
\frac{20}{10} cannot be changed to a mixed number. 10 could divide both numerator and denominator. And you get 2.
3 0
3 years ago
Read 2 more answers
Other questions:
  • Suppose that the amount of time one spends in a bank is exponentially distributed with an average frequency of 6 customers per h
    5·1 answer
  • A triangle has sides of lengths 12, 14, and 19. Is it a right triangle? Explain.
    13·1 answer
  • Solve for m: m/5 + 3(m-1)/) = 2(m-3)
    5·2 answers
  • Please help me with this question
    5·1 answer
  • 9 to 2
    7·1 answer
  • Divide. −10 ÷ −2
    5·2 answers
  • if the measure of an angle is 30 degrees more than the measure of its supplement, what is the measure of each angle?
    5·1 answer
  • Your laptop died and you need a new one for work Now! The one you need will cost $500. You do not have the cash in your checking
    8·1 answer
  • I’m just checking this, can someone who knows math please tell me the value of Y and W. Thank you!
    10·1 answer
  • i wil give you a brainlyest if you help me and five stars simplify the expression like terms 2(x+6)+3x+4=
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!