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
Ratling [72]
3 years ago
13

Explain how you can use a quick picture to find 3x2.7

Mathematics
1 answer:
lora16 [44]3 years ago
4 0
Change it 2.7 * 3 then keep one which is the decimal then multiply 27 * 3 which is 81 we do have the decimal so the answer is 8.1
You might be interested in
Which one is the answer (the answers are on the picture)
Ulleksa [173]

Answer:

20 inches per minute.

Step-by-step explanation:

If a snail moves 120 inches in 6 minutes.

Then,

In one minute it will reach = (120/6) inches

= 20 inches

5 0
2 years ago
Read 2 more answers
Suppose that 50% of all young adults prefer McDonald's to Burger King when asked to state a preference. A group of 12 young adul
ddd [48]

Answer:

a) 0.194 = 19.4% probability that more than 7 preferred McDonald's

b) 0.787 = 78.7% probability that between 3 and 7 (inclusive) preferred McDonald's

c) 0.787 = 78.7% probability that between 3 and 7 (inclusive) preferred Burger King

Step-by-step explanation:

For each young adult, there are only two possible outcomes. Either they prefer McDonalds, or they prefer burger king. The probability of an adult prefering McDonalds is independent from other adults. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

50% of all young adults prefer McDonald's to Burger King when asked to state a preference.

This means that p = 0.5

12 young adults were randomly selected

This means that n = 12

(a) What is the probability that more than 7 preferred McDonald's?

P(X > 7) = P(X = 8) + P(X = 9) + P(X = 10) + P(X = 11) + P(X = 12)

In which

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 8) = C_{12,8}.(0.5)^{8}.(0.5)^{4} = 0.121

P(X = 9) = C_{12,9}.(0.5)^{9}.(0.5)^{3} = 0.054

P(X = 10) = C_{12,10}.(0.5)^{10}.(0.5)^{2} = 0.016

P(X = 11) = C_{12,11}.(0.5)^{11}.(0.5)^{1} = 0.003

P(X = 12) = C_{12,12}.(0.5)^{12}.(0.5)^{0} = 0.000

P(X > 7) = P(X = 8) + P(X = 9) + P(X = 10) + P(X = 11) + P(X = 12) = 0.121 + 0.054 + 0.016 + 0.003 + 0.000 = 0.194

0.194 = 19.4% probability that more than 7 preferred McDonald's

(b) What is the probability that between 3 and 7 (inclusive) preferred McDonald's?

P(3 \leq X \leq 7) = P(X = 3) + P(X = 4) + P(X = 5) + P(X = 6) + P(X = 7)

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 3) = C_{12,3}.(0.5)^{3}.(0.5)^{9} = 0.054

P(X = 4) = C_{12,4}.(0.5)^{4}.(0.5)^{8} = 0.121

P(X = 5) = C_{12,5}.(0.5)^{5}.(0.5)^{7} = 0.193

P(X = 6) = C_{12,6}.(0.5)^{6}.(0.5)^{6} = 0.226

P(X = 7) = C_{12,7}.(0.5)^{7}.(0.5)^{5} = 0.193

P(3 \leq X \leq 7) = P(X = 3) + P(X = 4) + P(X = 5) + P(X = 6) + P(X = 7) = 0.054 + 0.121 + 0.193 + 0.226 + 0.193 = 0.787

0.787 = 78.7% probability that between 3 and 7 (inclusive) preferred McDonald's

(c) What is the probability that between 3 and 7 (inclusive) preferred Burger King?

Since p = 1-p = 0.5, this is the same as b) above.

So

0.787 = 78.7% probability that between 3 and 7 (inclusive) preferred Burger King

7 0
3 years ago
Which would the phrase "twice the difference of a number and 5" look like as a variable expression? A) 2(x-5)
Ira Lisetskai [31]
A) 2 (x-5)
because difference means subtraction and it is twice that

4 0
3 years ago
Read 2 more answers
Marcus played 3 different activities this week after school. The time he spent playing is described below. Swam forof an hour Pl
GuDViN [60]

Answer:

A

Step-by-step explanation:

We can find a common denominator for all of these fractions, compute, and then compare the values to find the right answer.

8 0
3 years ago
3. 40% of x is 35. Write an equation. Then use your equation to find x.​
MrRissso [65]

Answer: x =  87.5

................

5 0
2 years ago
Read 2 more answers
Other questions:
  • How do you decide whether a number is a solution of an inequality
    10·1 answer
  • (02.02)Line segment EF is shown on a coordinate grid: A coordinate plane is shown. Line segment EF has endpoints negative 3 comm
    7·2 answers
  • A young sumo wrestler decided to go on a special high protein diet to gain weight rapidly he started at 90 kg and gained weight
    6·1 answer
  • Write the common difference of an arithmetic sequence if a8 = ‒8 and a10 = ‒12 ? A. ‒4 B. ‒2 C. ‒1 D. 2
    9·1 answer
  • What is the solution to the system of equations?
    10·1 answer
  • Identify hypotheses, Part II. Write the null and alternative hypotheses in words and using symbols for each of the following sit
    11·1 answer
  • Use the graph above. find the slope and the y-int, then give the equation of the line y=mx+b
    13·1 answer
  • What is the leading coefficient of the polynomial f(c) defined below? need help asap!
    5·1 answer
  • A distrubutor wants to make 1,000 pounds of trail mix that is 8% raisins. He will use a mix that is 5% raisins and a mix that is
    9·2 answers
  • After spending 2/5 of her pocket money,Joyce realised she has spent $18.00. find her pocket money.​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!