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
stich3 [128]
3 years ago
13

In the problem 5-8+4×2-1 do i multiply 4×2? Then what is the next step?

Mathematics
1 answer:
Gre4nikov [31]3 years ago
3 0
Well, if you're following PEMDAS (Parentheses, Exponents, Multi/Div, Add/Sub), yes, first you would multiply 4x2, then since it's all adding and subtracting, you would go left to right, so if I'm right..
5-8+8-1 is the equation you'd need. So..
5-8=-3 -3+8=5-1=4. If I'm right, then 4 is your total. Hope that helped!
You might be interested in
The body temperatures of adults are normally distributed with a mean of 98.6degrees° F and a standard deviation of 0.60degrees°
Schach [20]

Answer:

97.72% probability that their mean body temperature is greater than 98.4degrees° F.

Step-by-step explanation:

To solve this question, we have to understand the normal probability distribution and the central limit theorem.

Normal probability distribution:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central limit theorem:

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, the sample means with size n of at least 30 can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}

In this problem, we have that:

\mu = 98.6, \sigma = 0.6, n = 36, s = \frac{0.6}{\sqrt{36}} = 0.1

If 36 adults are randomly​ selected, find the probability that their mean body temperature is greater than 98.4degrees° F.

This is 1 subtracted by the pvalue of Z when X = 98.4. So

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{98.4 - 98.6}{0.1}

Z = -2

Z = -2 has a pvalue of 0.0228

1 - 0.0228 = 0.9772

97.72% probability that their mean body temperature is greater than 98.4degrees° F.

6 0
3 years ago
A builder is buying property where she can build new houses the line plot shows the size of the lights for each house which is t
arlik [135]

Answer:

TBH IDRK

Step-by-step explanation:

You do what ever ask ur teacher not me im  on here looking for answers myself lmbo

6 0
2 years ago
Read 2 more answers
Use the Intermediate Value Theorem to show that there is a root of the given equation in the specified interval. ex = 3 − 2x, (0
laila [671]

Answer:

f(x) is continuous on the interval [0, 1], f(0) = <u>-2</u> , and f(1) = <u>1.718</u> . Since f(0) < 0 < f(1) , there is a number c in (0, 1) such that f(c) = 0 by the Intermediate Value Theorem. Thus, there is a root of the equation ex = 3 − 2x, in the interval (0, 1)

Step-by-step explanation:

From the question we are told that

   The equation is f(x) = e^x - 3-2x  

    The interval is  [0, 1]

Generally f(0) is  

      f(0) = e^0 - 3-2(0)

=>   f(0) = 1 - 3-2(0)  

=>    f(0) = -2  

Generally f(1) is

       f(1) = e^1 - 3-2(1)

       f(1) = e^1 - 1

       f(1) = 1.718

From the value we see that at x =  0  , f(0) =  -2 which is below the x-axis

    and  the  at  x = 1  , f(1) =  1.718  which is above the x-axis

Now  the according to Intermediate Value Theorem , given the condition stated above, there will exist a root c in the interval  such that

    f(c) =  0  

3 0
2 years ago
Evaluate.
madreJ [45]

Answer:

<em>Answer</em><em> </em><em>is</em><em> </em><em>none</em><em> </em><em>of</em><em> </em><em>these</em><em>.</em>

<em>Answer</em><em> </em><em>is given below with explanations</em><em>. </em>

Step-by-step explanation:

<em>Given</em><em> </em><em>that</em><em> </em><em>x</em><em> </em><em>=</em><em> </em><em>-2</em><em>.</em><em>5</em>

<em>To</em><em> </em><em>find</em><em> </em><em>the</em><em> </em><em>value</em><em> </em><em>of</em><em> </em><em>x</em><em>+</em><em>13</em>

<em>Ob</em><em> </em><em>substituting</em><em> </em><em>the</em><em> </em><em>value</em><em> </em><em>in</em><em> </em><em>the</em><em> </em><em>given equation</em><em> </em>

<em>we</em><em> </em><em>get</em><em> </em>

<em>=</em><em> </em><em>-2</em><em>.</em><em>5</em><em>+</em><em>13</em>

<em>=</em><em> </em><em>13</em><em> </em><em>-</em><em> </em><em>2</em><em>.</em><em>5</em><em> </em><em> </em><em> </em><em> </em><em>(</em><em>we</em><em> </em><em>can</em><em> </em><em>also</em><em> </em><em>write</em><em> </em><em>like</em><em> </em><em>this</em><em>)</em>

<em>=</em><em> </em><em>10</em><em>.</em><em>5</em>

<em>Therefore</em><em> </em><em>value</em><em> </em><em>of</em><em> </em><em>x</em><em> </em><em>+</em><em>13</em><em> </em><em>is</em><em> </em><em>10</em><em>.</em><em>5</em>

<em>HAVE</em><em> </em><em>A NICE DAY</em><em>!</em>

<em>THANKS FOR GIVING ME THE OPPORTUNITY</em><em> </em><em>TO ANSWER YOUR QUESTION</em><em>. </em>

8 0
3 years ago
Carter plans to read 4 books during summer break: Charlottes web, Grasshopper summer, Diary of a Wimpy Kid, and Diary of a Wimpy
Dmitrij [34]

Answer: 32

Step-by-step explanation:

4 x 4 x 4

7 0
3 years ago
Read 2 more answers
Other questions:
  • How would you do this problem
    14·1 answer
  • Find a positive number that equals 2 when added to its square.
    14·1 answer
  • HOW DO I SIMPLIFY PLZ HELP EXTRA POINT
    9·1 answer
  • It’s solve system by elimination!!! plz help asap
    15·1 answer
  • What is the following sum in simplest form √8 + 3√2 + √32
    6·1 answer
  • Which is an exponential decay function f (x)=3/4 (7/4)x f (x)=2/3 (4/5)-x. F (x)=3/2 (8/7)-x f (x)=1/3 (9/2)x
    15·2 answers
  • Two bookstores have the same number of book on sale. The prices of those books are graphed below. Which of the following stateme
    13·2 answers
  • Given the figure below, find the values of x and z. 80° 0 (15x + 40)​
    15·1 answer
  • -13+the root of y =-1<br><img src="https://tex.z-dn.net/?f=%20-%2013%20%2B%20%20%5Csqrt%7By%7D%20%20%3D%20%20-%201" id="TexFormu
    13·1 answer
  • Please help me with this ​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!