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
Lubov Fominskaja [6]
2 years ago
5

Look at the following expression:

Mathematics
1 answer:
user100 [1]2 years ago
5 0

Answer: The last option, Stacy is incorrect because she should multiply 2 and 2 first and then subtract 4 from 12.

Step-by-step explanation:

   We must follow the Order of Operations, also known as PEMDAS. See attached. Multiplication comes before subtraction, but Stacy subtracted 2 from 12 when she should have multiplied 2 by 2. This means the answer to your question is;

         Stacy is incorrect because she should multiply 2 and 2 first and then subtract 4 from 12.

You might be interested in
The probability that a person in the United States has type B​+ blood is 10%. Four un-related people in the United States are se
marysya [2.9K]

Answer:

a. 0.0001

b. 0.6561

c. 0.3439

d. B. The event in part​ (a) is unusual because its probability is less than or equal to 0.05.

Step-by-step explanation:

a. # We are given that the probability that a person in the United States has Type B+ blood = 0.10. Also we are told that four unrelated people in the United States are selected at random.

#We have to find here the probability that all four have type B+ blood.

Since the events are independent, we have :

Probability that all four have B+ blood  = 0.10 x 0.10x 0.10x0.10

                                                                                       = 0.0001

Therefore, the probability that all four have type B+ blood is 0.0001

b. We have to find the probability that none have B+ blood. Using the complementary law of probability we have:

Probability that blood type is not B+ = 1 - 0.10= 0.90                                                                        

Therefore, the probability that none have B+ blood

= 0.90 x 0.90 x 0.90x0.90=0.6561

Therefore, the probability that none have B+ blood is 0.6561

c. We have to find the probability that at least one of the four have B+ blood.

#The probability that at least one of the four have B+ blood = 1 -  Probability that none have B+ blood type

=1-0.6561=0.3439

Therefore,the probability that at least one of the four has type B+ blood is 0.3439

d. An event is considered unusual if the probability of the event is small or less than 0.05 . We note that event a is the only small probabilty and is less than 0.05.

-a is thus considered unusual(the rest are all usual events)

                                                                                                                 

6 0
2 years ago
Find the directional derivative of the function at the given point in the direction of the vector v. F(x, y, z) = xey + yez + ze
Vitek1552 [10]

no rurio greob tryo yeu

7 0
3 years ago
What would it cost to carpet a rectangular floor measuring 18 feet by 24 feet if the carpet costs $17.10 per square yard
cestrela7 [59]
It would cost $7387.20 for the entire rectangular floor. Hope this answers your question. :)
5 0
3 years ago
The amount of fertilizer in a landscaping company’s warehouse decreases at a rate of 3% per week. The amount of fertilizer in th
Anit [1.1K]

f(w)=78,000(0.97)w hope this helps

3 0
2 years ago
Read 2 more answers
I’ve been on vacation and am struggling with this chapter. I came up with a word problem but am not sure how to solve it. Thank
galina1969 [7]

Answer:

3 1/3

Step-by-step explanation:

So first turn 1 1/2 into a improper fraction--  which is 3/2

Then divide- to divide you need to flip the fraction and multiply

so you get 5/1*2/3 which equals 10/3 which is equal to 3 1/3

7 0
2 years ago
Other questions:
  • Order -2.96 2 1/9 -2 11/12 and 2.95 from least to greatest P.S 2.95 is repeating
    6·1 answer
  • Bill bought 38 1/2 feet of wire fencing to put around his blueberry plants. He cut the wire into several pieces, each one measur
    8·1 answer
  • How do you write 32,05,008 in expand form and word form
    7·1 answer
  • What's the area of the following triangle?
    11·2 answers
  • A hula hoop club bought new hula hoops. The state charges 6% sales tax. If the cost for one hula hoop was $17, what was the tota
    9·1 answer
  • In the American version of the Game Roulette, a wheel has 18 black slots, 18 red slots and 2 green slots. All slots are the same
    14·1 answer
  • What is a true statement comparing the graphs of x^2/6^2 = 1 and x^2/8^2-y^2/6^2=1
    12·1 answer
  • I need to find the measure of the exterior angle of the triangle ​
    7·1 answer
  • A ball rolling down the hill is an example of what type of energy
    12·1 answer
  • #3 is what I need help on
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!