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
Yuri [45]
3 years ago
12

Which operation should be performed first according to the order of operations? 21 – 5 + 24 ÷ 3 + 90 • 4

Mathematics
2 answers:
allochka39001 [22]3 years ago
7 0

Answer:

\boxed{=384}

Step-by-step explanation:

<u><em>I'll give you a hint. You had to used pemdas stands for: p-parenthesis, e-exponents, m-multiply, d-divide, a-add, and s-subtract that came from left to right.</em></u>

First you had to multiply and divide from left to right.

21-5+24/3+90*4

21-5+8+90*4

90*4=360

21-5+8+360

Then you add and subtract from left to right.

21-5=16

16+8+360

16+8=24

24+360=384

Final answer: \boxed{=384}

Hope this helps!

And thank you for posting your question at here on brainly, and have a great day.

-Charlie

Ann [662]3 years ago
3 0
According to Order of operation, we perform: Divide then multiplication then subtraction, then sum.

In short, Your Answer would be Option C) 24To remember use PEMDAS P=parenthesis E=Exponents M=Multiply D=Divise A=Addition S=Subtraction Since you do not have parenthesis or exponents you must first multiply / 3

GOOD LUCK AND HOPE IT HELPS U
You might be interested in
An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer designed the valve such tha
KiRa [710]

The p-value from the hypothesis test is 0.142 i.e., greater than the given significance level of 0.05. So, the null hypothesis is not rejected. The z-score for the given sample is 1.471.

<h3>What is the decision rule for the p-value approach to hypothesis testing?</h3>

The decision rule based on p-value states,

  • If p > α (significance level), then the null hypothesis is not rejected
  • If p < α (significance level), then the null hypothesis is rejected in favor of the alternative hypothesis.

<h3>Calculation:</h3>

Since it is given that the valve would produce a mean pressure of 5.4 pounds/square inch. I.e., μ = 5.4 p/si

So, Defining the hypothesis:

Null hypothesis H0: μ = 5.4

Alternative hypothesis Ha: μ ≠ 5.4

It is given that,

The valve was tested on 24 engines. I.e., Sample size n = 24

The sample mean X = 5.7

Standard deviation σ = 1.0 and

The significance level = 0.05

Since the population distribution is approximately normal,

the test statistic is calculated as follows:

z = (X - μ)/(σ/\sqrt{n})

On substituting the value,

z = (5.7 - 5.4)/(1.0/\sqrt{24})

  = (0.3)/0.204

  = 1.471

Fron this z-score, the p-value is calculated as 0.142.

Since, the value of p > 0.05 (significance level), the null hypothesis is not rejected.

Learn more about hypothesis testing here:

brainly.com/question/22078281

#SPJ4

6 0
1 year ago
If these are correct.
podryga [215]
Yes I think they are correct
5 0
3 years ago
Write the expression:<br><br> Add 2 and 4, then subtract 9
marissa [1.9K]
The expression is
(2+4)-9
5 0
3 years ago
Read 2 more answers
Hello i need some help!
murzikaleks [220]

Answer:

3×2 + 3×-b

Step-by-step explanation:

3(2-b)\\= 3\times 2 + 3\times (-b)\\\\= 6 -3b

5 0
3 years ago
Read 2 more answers
One pound of swordfish costs as much as 1.5 pounds of salmon. Mrs. O pays $39 for 2 pounds of salmon and 3 pounds of swordfish.
Sonbull [250]
For every 2 pounds of salmon she pays for she will get 3 pounds of sword fish with it. 2 to 3 or 2/3 are different ways to Write a ratio for this problem.
4 0
3 years ago
Other questions:
  • The length of a rectangle is twice its width. The perimeter is 60 ft. Find its area.
    14·1 answer
  • Help Please ! It would mean a lot really (also have more questions on my page)
    7·1 answer
  • What number divided by 6 leaves a remainder of 5, divided by 5?
    12·1 answer
  • Ben’s bank account has only $34. Today he spent $45 on a new sweatshirt. What is the new balance in his bank account?
    5·2 answers
  • Does xy - 2 =9 represents a linear function
    14·1 answer
  • The function g is given by g(x)=−2(x+2)−6. Which of the following expresses the value of g(b−5)? Select one: A. −4b−20 B. 4b+12
    9·1 answer
  • Hi guys! I need to show all work for this. Your answers are much appreciated! 5 divided by 0.8
    10·1 answer
  • Find the product of quotient using only positive exponents
    5·1 answer
  • CAN SOMEONE PLEASE HELP ME WITH MY MATH QUESTION
    15·1 answer
  • Y - 4= -8 (x - 1)<br> linear or nonlinear?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!