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
Arisa [49]
2 years ago
14

What dose 2 + 2 = ?????????

Mathematics
1 answer:
Ivenika [448]2 years ago
4 0

Answer: 4

Step-by-step explanation:

Just add

You might be interested in
Your favorite cookie contains 10 grams of fat. If you eat no less than 4 cookies and no more than 7 cookies, how many grams of f
Sergio039 [100]

Well, if each cookie contains 10g of fat, then...

4 cookies = 4*10 = 40g fat

7 cookies = 7*10 = 70g fat

I can only eat 4 to 7 cookies. So that means I had between 40 and 70 grams of fat.

Answer: a. Between 40 and 70 grams.

6 0
3 years ago
Seventy percent of all vehicles examined at a certain emissions inspection station pass the inspection. Assuming that successive
NeX [460]

Answer:

(a) 0.343

(b) 0.657

(c) 0.189

(d) 0.216

(e) 0.353

Step-by-step explanation:

Let P(a vehicle passing the test) = p

                        p = \frac{70}{100} = 0.7  

Let P(a vehicle not passing the test) = q

                         q = 1 - p

                         q = 1 - 0.7 = 0.3

(a) P(all of the next three vehicles inspected pass) = P(ppp)

                           = 0.7 × 0.7 × 0.7

                           = 0.343

(b) P(at least one of the next three inspected fails) = P(qpp or qqp or pqp or pqq or ppq or qpq or qqq)

      = (0.3 × 0.7 × 0.7) + (0.3 × 0.3 × 0.7) + (0.7 × 0.3 × 0.7) + (0.7 × 0.3 × 0.3) + (0.7 × 0.7 × 0.3) + (0.3 × 0.7 × 0.3) + (0.3 × 0.3 × 0.3)

      = 0.147 + 0.063 + 0.147 + 0.063 + 0.147 + 0.063 + 0.027

      = 0.657

(c) P(exactly one of the next three inspected passes) = P(pqq or qpq or qqp)

                 =  (0.7 × 0.3 × 0.3) + (0.3 × 0.7 × 0.3) + (0.3 × 0.3 × 0.7)

                 = 0.063 + 0.063 + 0.063

                 = 0.189

(d) P(at most one of the next three vehicles inspected passes) = P(pqq or qpq or qqp or qqq)

                 =  (0.7 × 0.3 × 0.3) + (0.3 × 0.7 × 0.3) + (0.3 × 0.3 × 0.7) + (0.3 × 0.3 × 0.3)

                 = 0.063 + 0.063 + 0.063 + 0.027

                 = 0.216

(e) Given that at least one of the next 3 vehicles passes inspection, what is the probability that all 3 pass (a conditional probability)?

P(at least one of the next three vehicles inspected passes) = P(ppp or ppq or pqp or qpp or pqq or qpq or qqp)

=  (0.7 × 0.7 × 0.7) + (0.7 × 0.7 × 0.3) + (0.7 × 0.3 × 0.7) + (0.3 × 0.7 × 0.7) + (0.7 × 0.3 × 0.3) + (0.3 × 0.7 × 0.3) + (0.3 × 0.3 × 0.7)

= 0.343 + 0.147 + 0.147 + 0.147 + 0.063 + 0.063 + 0.063

                  = 0.973  

With the condition that at least one of the next 3 vehicles passes inspection, the probability that all 3 pass is,

                         = \frac{P(all\ of\ the\ next\ three\ vehicles\ inspected\ pass)}{P(at\ least\ one\ of\ the\ next\ three\ vehicles\ inspected\ passes)}

                         = \frac{0.343}{0.973}

                         = 0.353

3 0
3 years ago
Read 2 more answers
One student solved the inequality −4 > x/-7 and got 28 28. Are they both correct? Explain
dusya [7]

Answer: solutions are the same, just written differently, inequality sign is reversed when multiplying by a negative. Yes, both students are correct.Jul 8, 2018

Step-by-step explanation:

8 0
3 years ago
Help! how do i answer this
navik [9.2K]
Idk but ima try to figure it out ok
7 0
3 years ago
Which statement regarding the diagram is true?
Sergeu [11.5K]
Answer

<span>m∠WXY + m∠YXZ = 180°</span>
7 0
3 years ago
Read 2 more answers
Other questions:
  • 10x^3+40x^2+15x<br>------------------------------<br> 5x<br>​
    10·1 answer
  • Part one ) compare 8^0 and 8^-2 which is greater and explain
    12·1 answer
  • Use the given line(s) from a random number table to select numbers to use in each problem. Select 2 contestants for a game show
    5·2 answers
  • What is 34 divided by 5,780
    13·2 answers
  • A gear in a machine turns 2 1/2 times every hour.
    5·1 answer
  • What’s the constant term and 4th and 5th term?
    7·1 answer
  • What is the approximate distance between points A and B?
    6·1 answer
  • Rewrite the following as a decimal<br> -5 1/11
    10·1 answer
  • Of the 600 people at a music festival, 420 had attended the previous year. how many people out of 100 had attended the previous
    12·1 answer
  • The number of residents in a city is 57,000 people. The population is increasing each
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!