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
makkiz [27]
2 years ago
11

A rectangular box is twice as long as it is wide and twice as wide as it is high. The sum of its length,

Mathematics
1 answer:
seraphim [82]2 years ago
8 0

Answer:

ok so the

the length is 20

the width is 10

the height is 5

Step-by-step explanation:

ok i got this by guess and check

twice as long as it is wide so i am saying that it is 10 wide so it would be 20 long and if it is twice as wide as it is tall then it is 5 because 10/2=5

20+10+5=35

You might be interested in
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
Use the diagram to solve for x.
Vanyuwa [196]

Answer:

0

Step-by-step explanation:

Angle x+45  = (145-55) / 2

2x + 90 = 90

2x = 0

x = 0

5 0
2 years ago
Consider the following statement: The square of a prime number is not prime. (a) Write this as an if-then statement, using caref
Hitman42 [59]

The square of a prime number is not prime.

a) let x ∈ R, If x  ∈ {prime numbers}, then x^{2}∉{prime numbers}

there says that if x is a real and x is in the set of the prime numbers, then the square of x isn't in the set of prime numbers.

b) Prove or disprove the statement.

ok, if x is a prime number, then x only can be divided by himself. Now is easy to see that x^{2} = x*x can be divided by himself and x, then x*x is not a prime number, because can be divided by another number different than himself

7 0
3 years ago
Set up an algebraic equation and then solve the following problems. The height of an object dropped from the top of a 64-foot bu
ycow [4]
0=-16t^2 +64

0=-16(t^2 - 4)

0=-16(t-2)(t+2)

t=2 or - 2

It will take two seconds for the object to hit the ground.
7 0
3 years ago
Which is greater 525 centimeters or 5 meters ?
zubka84 [21]
525 centimeters is greater than 5 meters. 525 cm = 5.25 m

Thus, 525 cm is greater than 5 meters.
4 0
2 years ago
Read 2 more answers
Other questions:
  • Taylor has $430 in her savings account. The annual simple interest at the bank is 2%. How much intreast will she earn on her sav
    8·1 answer
  • Find the standard form of x^2-4x 3
    13·1 answer
  • A six foot man casts a 14 foot shadow. how long is the shadow of a 40 foot tree?
    11·1 answer
  • A parabola has its vertex at (4,-2). one of the zeros is 1. what is the other zero?
    5·1 answer
  • Math help mee plzzzzzz
    7·1 answer
  • for two functions, a(x) and b(x), a statement is made that a(x) = b(x) at x=2. what is definitely true about x=2
    14·2 answers
  • WILL MAKE BRAINLESSLY What does it mean to be farthest away from the origin? (Or what’s the answer to 23)
    8·1 answer
  • before soccer practice. Laura warms up jogging around the rectangular soccer field that is 80 yards by 120 yards how many yards
    15·1 answer
  • I am always hungry and will die if not fed, but whatever I touch will soon turn red. What am I?
    13·1 answer
  • I need help really quick
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!