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
Alla [95]
3 years ago
7

Hello! I have a few questions from my maths book that I'm really struggling to understand.. please help!

Mathematics
1 answer:
BlackZzzverrR [31]3 years ago
7 0
Sorry I am not sure that looks pretty difficult
You might be interested in
Marc mixes blue and yellow paint to make his favorite shade of green, which he'll use to paint his house. He has 14 cans of blue
SVETLANKA909090 [29]
12 blue
18 yellow

for every can of blue you need one and a half cans of yellow
3 0
3 years ago
The Difference between two number is 18.5 find the second number​
Annette [7]

Answer:

it can literally be anything you didnt give any information about the first number

Step-by-step explanation:

3 0
2 years ago
A medical devices company wants to know the number of hours its MRI machines are used per day. A previous study found a standard
4vir4ik [10]

The company has to study 199 machines.

In statistics, the standard deviation is a measure of the amount of variation or dispersion of a set of values. A low standard deviation indicates that the values tend to be close to the mean of the set, while a high standard deviation indicates that the values are spread out over a wider range.

It is given that;

Margin of error E = 0.7

Confidence interval 98% = 1-0.98 = 0.02

Standard deviation = 6 hours

Number of MRI machines needed per day n, = [(z alpha/2 * SD)/E]²

Z alpha/2 = 1.645 at alpha = 0.1

Inputting these values into n we have that

[(1.645*6)/0.7]²

= 14.1²

= 198.81 is approximately equal to 199

The company has to study 199 machines.

To know more about standard deviation visit: brainly.com/question/475676

8 0
2 years ago
Please choose all irational thx ^_^
lana66690 [7]

Answer:

Here is a note to help you: Most numbers are rational numbers. Here is how you know when a number is rational or not [especially if its a decimal].

Rational:

- Decimals are usually rational. Rational decimals my look like this:

1) 0.25

2) 0.333333333...

3) 0.234234234234234234...

The following above are rational because they either: terminate or repeat. That being said, 1) terminates, and 2) and 3) repeat because the pattern of 2) is just 3's, and the pattern of 3) is 0.234 over and over again.

Irrational:

- Irrational numbers are numbers that don't repeat, and don't terminate. The next examples are irrational:

1) 0.234536718092343...

2) 8.123456789023452574794832468...

3) 1723456.4356784794954233690422...

- They go on forever and ever, and don't have a pattern/terminate like rational numbers.

Now that you've got that in the bag, its time for your answers!

Step-by-step explanation:

A) rational --> It has a pattern, but does not terminate

B) rational --> It terminates

C) irrational --> it does not have a pattern, even if it does terminate

D) rational --> when you solve it, the answer is 2, and 2 is rational

E) irrational --> it does not have a pattern, but does terminate

I hope I helped you! This took forever, but it was worth it! :D

<h2><u>PLEASE MARK BRAINLIEST!</u></h2>

<u></u>

6 0
3 years ago
Write the word sentence as an equation 8 is the quotient of a number g and 3 an equation that represents this word sentence is
Ket [755]
G (divided sign) 3 =8
4 0
3 years ago
Other questions:
  • Solve for x 1/4(4x-1)=-1/7-5/7
    8·1 answer
  • If P=2L+2W, solve for W.
    7·1 answer
  • What is tbe best approximation for the circumference of a corcle with a diameter of 400 inches use 3.14 to approximate pi
    8·2 answers
  • There are 10 kids that want ice cream. Each one can choose between chocolate, vanilla or strawberry. You'll collect their choice
    10·1 answer
  • A circular pool of radius r m has a path 2 m wide around its perimeter. If the area of the pool is four-fifths of the total area
    12·1 answer
  • Please Help! Please write a detailed explanation of how you got your answer!!! Please don't write fake answers just for points.
    5·2 answers
  • Find h. 9 ft h 7 ft 15 ft Your answer what is the answer ​
    8·1 answer
  • please can someone tell me what HCF and LCF is and their defferences because i always get find them confusing​
    13·2 answers
  • Help solve for X. I will give brainliest to the best answer!!! PLEASEEEE
    14·1 answer
  • The cost of tuition at a college is $13,500 and is increasing at a rate of 3.75% each year. Use an exponential function to find
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!