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
EastWind [94]
3 years ago
7

What is the definition of order of operations

Mathematics
1 answer:
Reil [10]3 years ago
4 0
Order of operations : A collection of rules that define which procedures to perform first in order to evaluate a given mathematical expression.
(PEMDAS) -- parenthesis, exponents, multiplication/division, addition/subtraction.
You might be interested in
A 0.3 ml dose of a drug is injected into a patient steadily for 0.65 seconds. At the end of this time, the quantity, , of the dr
Darya [45]
Use the compound interest formula: A=P(1+i)^t.

P is the initial amount of the drug, 0.3ml.
i is - 0.0035.
t is in seconds.

You'll get:
A=0.3(1-0.0035)^t.

Sub in any value on t to find out how many ml are left t seconds after injection.

The 0.65 second injection time does not seem to be relevant as the question clearly states that the exponential decay starts AFTER the injection is completed.
4 0
3 years ago
What is the value of the function at x=−2? <br> y=−2 <br> y = 0 <br> y = 2 <br> y = 3
qaws [65]

Answer:

3

Step-by-step explanation:

hope it is right and is helpful

5 0
3 years ago
Read 2 more answers
While conducting a test of modems being manufactured, it is found that 10 modems were faulty out of a random sample of 367 modem
Kitty [74]

Answer:

We conclude that this is an unusually high number of faulty modems.

Step-by-step explanation:

We are given that while conducting a test of modems being manufactured, it is found that 10 modems were faulty out of a random sample of 367 modems.

The probability of obtaining this many bad modems (or more), under the assumptions of typical manufacturing flaws would be 0.013.

Let p = <em><u>population proportion</u></em>.

So, Null Hypothesis, H_0 : p = 0.013      {means that this is an unusually 0.013 proportion of faulty modems}

Alternate Hypothesis, H_A : p > 0.013      {means that this is an unusually high number of faulty modems}

The test statistics that would be used here <u>One-sample z-test</u> for proportions;

                             T.S. =  \frac{\hat p-p}{\sqrt{\frac{p(1-p)}{n} } }  ~  N(0,1)

where, \hat p = sample proportion faulty modems= \frac{10}{367} = 0.027

           n = sample of modems = 367

So, <u><em>the test statistics</em></u>  =  \frac{0.027-0.013}{\sqrt{\frac{0.013(1-0.013)}{367} } }

                                     =  2.367

The value of z-test statistics is 2.367.

Since, we are not given with the level of significance so we assume it to be 5%. <u>Now at 5% level of significance, the z table gives a critical value of 1.645 for the right-tailed test.</u>

Since our test statistics is more than the critical value of z as 2.367 > 1.645, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which <u><em>we reject our null hypothesis</em></u>.

Therefore, we conclude that this is an unusually high number of faulty modems.

6 0
3 years ago
What does 3.6÷(-9.8) equal?
valentinak56 [21]

Answer:

-0.36734693877

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
A circle has the equation x2+ y2 = 9. What is the length of the radius?
Zarrin [17]

Answer:

The center is (0,0) and the radius is 3

Step-by-step explanation:

The equation of a circle is given by

(x-h)^2+(y-k)^2 = r^2

Where (h,k) is the center and r is the radius

(x-0)^2+(y-0)^2 = 3^2

The center is (0,0) and the radius is 3

3 0
3 years ago
Read 2 more answers
Other questions:
  • Enter a range of values for x.<br> 85°<br> 25<br> 5x - 10<br> [ ? ] Enter
    15·1 answer
  • Can someone help me please ?
    14·1 answer
  • Find the missing value so that the two points have a slope of -2 (1,y)and (6,-5)
    11·1 answer
  • When data consist of rates of change, such as speeds, the harmonic mean is an appropriate measure of central tendency. The harmo
    8·1 answer
  • My baby brother needs help 7z+4-9z=8 <br> what is z=
    15·1 answer
  • 39<br> 125°<br> Find the value of x
    9·1 answer
  • The number of hours per week that the television is turned on is determined for each family in a sample. The mean of the data is
    14·1 answer
  • Given h(x)=-x+5, solve for x when h(x)=3. PLEASE I NEED HELP ILL GIVE BRAINLIEST.
    9·1 answer
  • What is the volume, in cubic feet, of a cone that has a base
    10·1 answer
  • A train travels in a straight path at a steady speed of 1.25 miles per minute. at noon, the train is 100 miles from the starting
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!