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
omeli [17]
3 years ago
15

Use the commutative property of multipli ation to write a related num er sentene 4x5=20

Mathematics
2 answers:
WITCHER [35]3 years ago
7 0
5×4=20 is the obvious answer?
notka56 [123]3 years ago
4 0
5x4=20 all you do is switch the factors

You might be interested in
For questions 2-5, the number of pieces in a regular bag of Skittles is approximately normally distributed with a mean of 38.4 a
aleksley [76]

Answer:

a. -1.60377

b. 0.25451

c. 0.344

d. Option b) 78th

Step-by-step explanation:

The number of pieces in a regular bag of Skittles is approximately normally distributed with a mean of 38.4 and a standard deviation of 2.12.

a)What is the z-score value of a randomly selected bag of Skittles that has 35 Skittles? a) 1.62 b) -1.62 c) 3.40 d) -3.40 e)1.303.

The formula for calculating a z-score is is z = (x-μ)/σ,

where x is the raw score

μ is the population mean

σ is the population standard deviation.

z = 35 - 38.4/2.12

= -1.60377

Option b) -1.62 is correct

b) What is the probability that a randomly selected bag of Skittles has at least 37 Skittles? a) .152 b) .247 c) .253 d).747e).7534. .

z = (x-μ)/σ

Mean of 38.4 and a standard deviation of 2.12.

z = (37 - 38.4)/2.12

= -0.66038

P-value from Z-Table:

P(x<37) = 0.25451

The probability that a randomly selected bag of Skittles has at least 37 Skittles is 0.25451

Option c) .253 is.correct

c) What is the probability that a randomly selected bag of Skittles has between 39 and 42 Skittles? a) .112 b) .232 c) .344 d).457 e).6125.

z = (x-μ)/σ

Mean of 38.4 and a standard deviation of 2.12.

For 39 Skittles

z = (39 - 38.4)/2.12

= 0.28302

Probability value from Z-Table:

P(x = 39) = 0.61142

For 42 Skittles

z = (42 - 38.4)/2.12

= 1.69811

Probability value from Z-Table:

P(x = 42) = 0.95526

The probability that a randomly selected bag of Skittles has between 39 and 42 Skittles is:

P(x = 42) - P(x = 39

0.95526 - 0.61142

0.34384

= 0.344

Option c is.correct

d) What is the percentile rank of a randomly selected bag of Skittles that has 40 Skittles in it? a)82nd b) 78th c) 75th d)25th e)22nd

z = (x-μ)/σ

Mean of 38.4 and a standard deviation of 2.12.

z = (40 - 38.4)/2.12

= 0.75472

P-value from Z-Table:

P(x = 40) = 0.77479

Converting to percentage = 0.77479× 100

= 77. 479%

≈ 77.5

Percentile rank = 78th

7 0
3 years ago
3.) a + 40 = 0 What is the value of a?<br> a =
Rus_ich [418]

Answer:

a= -40

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
PLEASE ANSWER THIS ASAP I WILL MARK YOU THE BRAINLIEST
emmasim [6.3K]
Answer = 314.2

Area of cyclinder:
Area at base x height

Pi = 3.142

5^2 x 3.142 = 78.55

78.55 x 4 = 314.2
5 0
3 years ago
Today is sunday. Tom starts to read a book with 490 pages today. Sundays he reads 25 pages and on all other days he reads 4 page
mrs_skeptik [129]

Based on the information given, it can be noted that Tom will use 117 days to read the book.

How to solve a equation.

Based on the information given, we are informed that Tom starts to read a book with 490 pages today. Sundays he reads 25 pages and on all other days he reads 4 pages.

Let the number of days be represented by x. Therefore, the equation to solve the question will be:

25 + (4 × x) = 490

25 + 4x = 490

4x = 490 - 25

4x = 465

x = 465/4

x = 116.25

x = 117

Therefore, he'll use 117 days to read the book.

Learn more about equations on:

brainly.com/question/13763238

6 0
2 years ago
Solve the equation. z/32 + 5/8 =13/16<br><br> True Or false, And why?
Oxana [17]
The equation is false because the real answer is z5/4. The variable doesn't just disappear.
5 0
3 years ago
Read 2 more answers
Other questions:
  • Felix reported that the coldest day on record for his town was 5 times colder than yesterday's temperature negative 4°c what was
    15·1 answer
  • Someone help me please
    5·1 answer
  • If RG=7x+3, GQ=3x+13, and RQ=56, then find the value for x, RQ, and GQ.
    10·1 answer
  • Evaluate the expression 15x + 4 for x = -1 1/2
    7·1 answer
  • If the complex number x = 3 + bi and |x|^2 = 13, which is a possible value of b?
    7·1 answer
  • Round 24579 to 3 significant figures ​
    8·1 answer
  • If the cube shown is 7 centimeters on all sides what is the length of the diagonal x.
    10·2 answers
  • What kind of food might the nutrition label be describing
    14·2 answers
  • I don't understand may you please help?
    6·2 answers
  • HELP <br><br> What is the equation of the trend line in the scatter plot ?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!