MATHEMATICS
please answer it i am waiting
choose the correct option :

1: set A = { 1,5,6,7 } and set B = { 0,1,7,15 } . what is the A U B ?

a) A U B = { 0,1,5,6,7,15 }

b) A U B = {0,1,1,5,6,7,15}

c) A U B = { 1,5,6,7,15}

d) A U B = { 1, 7 }

2: which equation shows the identity property of multiplication ?

a) a+a+a+= 3× a

b) ( a + b ) + 4 = a + ( 4 + b )

c) a ( b + c ) = ab + ac

d) a×1 = a

3: which is an example of associative property of addition ?

a) 7+ 0 = 7

b) (3+9) + 8 = 3 + ( 9+ 8)

c) 5 + ( -5 ) = 0

d) 4+ 3 = 3 +4

4: which property of addition is used in the following ?

( 9+8 ) + 5 = 9 + ( 8+ 5 )

a) associative property

b) closure property

c) distributive property

d) commutative property

5: which property is used in the following expression ?

( 2 × 6 ) × 4 = 6 × ( 4 × 2 )

a) distributive property of multiplication

b) commutative property of addition

c) associative property of addition

d) associative property of multiplication

6: which property is used in the following ?

2×( 4+3 ) = 2 x 4 + 2 × 3

a) commutative property

b) distributive property

c) associative property

d) none of the above

7: which is an example of identity property of addition ?

a) (4+6) + 2 = 4 + ( 6 + 2 )

b) 9+ 0 = 9

c) 8× 1 = 8

d) 7+ 4 =4+ 7

8: which of the following does NOT show the commutative property of addition ?

a) ab = ba

b) 3x + 4y = 4y + 3x

c) a+ b =b+ a

d) 8+ x = x + 8

9: which operation will not change the value of any nonzero number ?

a) dividing by zero

b) adding one

c) multiplying by zero

d) multiplying by one

10: which property of addition does 2 + 0= 2 illustrate ?

a) commutative property

b) zero property

c) distributive property

d) identity property
please , i am in a hurry

Answers

Answer 1

Answer:

1 .i think it is d

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

Choose the correct option


Related Questions

A cylindrical tank is half-full of oil. The cylinder has base radius of 100cm.The height of the cylinder is 250cm. 1 litre =1000cm cubed
How many litres of oil are in the tank? Round your answer to the nearest litre.

Answers

Answer:

Step-by-step explanation:

area of a cylinder=. V=πx r^2xh

so...

πx100^2x125=3926990.817 (the height is 125 because only half of it has oil)

3926990.817/1000=3927litres

A student used f(x) = 5.00(1.012)* to show how the balance in a savings account will
increase over time. What does the 5.00 represent?

Answers

Answer:

  the initial balance

Step-by-step explanation:

5.00 is the value of f(0). It is the balance before any time has elapsed, the initial balance.

What is the y-value when x equals - 12?
y = -200 - 6(x)
Enter the correct answer

Answers

Answer:

y = -6x - 200

Step-by-step explanation:

How to solve #2 if you don’t know any of the side lengths?? (We’re learning about Pythagorean Theorem)

Answers

Answer:

Applying Pythagorean theorem in right triangle with c is longest side and a, b are the other sides:

=> c^2 = a^2 + b^2

=> a^2 = c^2 - b^2

=> b^2 = c^2 - a^2

Hope this helps!

:)

Answer:

c² = a² + b²

a² = c² - b²

b² = c² - a²

What does X equal?? Please help me out!!

Answers

X = 80 + 20 = 100 degrees

a cartographer used a scale of 1 inch :300 meters for the heights of different mountains if the actual height of one of those mountains is 3700 meters high. what is the height on the map?​

Answers

Answer:

[tex]12\frac{1}{3}[/tex] inches

Step-by-step explanation:

So to go from 300 to 3700 you have to multiply by [tex]12\frac{1}{3}[/tex]

The mean temperature for the first 7 days in January was 4 °C.
The temperature on the 8th day was 4 °C.
What is the mean temperature for the first 8 days in January?

Answers

Answer:

4 degrees Celsius

Step-by-step explanation:

Since the mean is (total/amount), we can remake this to get That mean*amount=total. For the first 7 days, 4*7=28 for our total, and add that to the 8th day to get 32 for our total. 32/8=4 for our mean for the first 8 days of january

Answer:

Answer:

4 degrees Celsius

Step-by-step explanation:

Since the mean is (total/amount), we can remake this to get That mean*amount=total. For the first 7 days, 4*7=28 for our total, and add that to the 8th day to get 32 for our total. 32/8=4 for our mean for the first 8 days of january

Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification: freshmen 83, sophomores 68, juniors 85, and seniors 64. The school superintendent is interested in determine whether there has been a significant change in the classification between last school year and this school year.

Deteremine the correct null hypothesis for this problem

Answers

Find the given attachment

Jamie spent $12 dollars a day on food for 6 days. What was Jamie’s overall change in her bank account for food over the 6days?

Answers

Answer:

-72

Step-by-step explanation:

12 * 6 = 72

Jaime spent 72 dollars for the 12 days

It went down because the money was spent

-72

write an algebraic expression for 2 less than twice a n

Answers

Answer:

(2(an))-2

Step-by-step explanation:

Add. Enter your answer in scientific notation.
2.25 x
108 +3.50 x 108 +2.25 x 108 =

Answers

Answer:

  8×10⁸

Step-by-step explanation:

2.25×10⁸ +3.50×10⁸ +2.25×10⁸ = (2.25 +3.50 +2.25)×10⁸ = 8×10⁸

__

Your calculator can do this for you and display the result in scientific notation.

Batman, who is having a slow year for crime, has resorted to saving cats from very tall buildings. Our fearless 6 foot tall hero is 40 feet from the the Petsmart building the cat was trying to break in to, in order to get his paws on the pumpkin spice cat nip. Batman sights the top of the building at a 30° angle, how high is the building?

Answers

Answer:

29.094 feet tall

Step-by-step explanation:

tan(30) = [tex]\frac{x}{40}[/tex]

so tan is opposite over adjacent which means that we should be able to solve for the opposite as we have the angle (30) and the distance from Batman to to building, which is (40 feet), with these numbers you will do, tan(30) = [tex]\frac{x}{40}[/tex] and from that you will solve for x, and from x you add the 6 foot of batmans height

what is the number that has the same value as l6l

Answers

Answer:6

Step-by-step explanation: Moving two bars to the edge of 6 will result in 6.

What is the volume, in cubic cm, of a rectangular prism with a height of 19cm, a
width of 16cm, and a length of 8cm?

Answers

Answer: 2432

19 x 16 x 8 = 2432

Answer: 2,432 cm³

Step-by-step explanation: To find the volume of a rectangular prism or a prism whose base is a rectangle, we use the formula below.

Volume = length × width × height

Since the rectangular prism has a length of 8 centimeters, a width of 16 centimeters, and a height of 19 centimeters,

we can plug this information into the formula to get

(8 cm)(16 cm)(19 cm).

This gives us 2,432 cm³.

So the volume is 2,432 cm³.

Sherri hikes on the Pacific Coast trail. She plans to hike 3.72 miles. If she hikes at an average speed of 1.2 miles per hour, how long will she hike?

Answers

Answer:

3.1 hours

Step-by-step explanation:

Average Speed=Distance Traveled ÷ Time Taken

Sherri plans to hike 3.72 miles  at an average speed of 1.2 miles per hour.

Average Speed=1.2 miles per hour.Distance =3.72 miles

Therefore:

1.2 miles per hour=3.72 miles ÷ Time

1.2 miles per hour X Time=3.72 miles

Time = 3.72 ÷ 1.2 hours

Time taken by Sherri=3.1 hours

Sherri will hike for 3.1 hours.

What is the median of the following numbers?
8,10,8,5,4,7,5,10,8

Answers

Answer:

the answer is 4

Step-by-step explanation:

Answer:

the median is 7

Step-by-step explanation:

to find the median you need to find the highest number in value and then find the lowest number in value. The median is the middle value.

nora spend 1/4 of her pocket money on choclate ,1/8 pizz at end she had 40 dollar left how much did she have at the begging

Answers

Answer:

$64

Step-by-step explanation:

1/4 + 1/8=3/8

8/8-3/8=5/8

8/8 x 40 x8/5

=$64

Answer:

64

Step-by-step explanation:

1/4 = 2/8

2/8 + 1/8 = 3/8

5/8 = 40

div by 5 = 8

1/8 = 8

she had 64 dollars to start with

Please help.

Best answer will get brainliest.

Answers

Answer:

59.1 for the mean

Step-by-step explanation:

You add all the numbers together and divde it by the amount of numbers there are.

Answer:

Mean= 59.1

Median= 58

Range= 11

Step-by-step explanation:

Mean= Total data/Number of given datas

        = 60+58+54+56+63+65+62+59+56+58/10

Mean = 591/10= 59.1

Median= Middle value

            = 65, 63, 62, 60, 59, 58, 58, 56, 56, 54

Median= 58

Range= Highest value- Lowest value

           = 65-54

Range= 11

BRAINLIEST this is a really hard question and i just cant figure it out, can someone please help me

What is 0 + 0 - 0 / 0 = 0 + 0 / 0
i cant figure it out lol

Answers

Answer:

so first, 0 can't be divisible

but whatever,

0 + 0=0

0-0=0

0/0=0 = 0+0=0/0=0

so the answer will stay the same, which is 0.

lol, hope that helps, dude/dudess.

Answer:

0

Step-by-step explanation:

because

0+0=0

0-0=0

0÷0=0

0×0=0

5lb 7oz -11oz need help quick​

Answers

Answer:

76 ounces

Step-by-step explanation:

I'm assuming you meant:

5lb+7oz-11oz=

16 ounces in a pound

5lb+7oz-11oz=

80+7-11=

87-11=

76 ounces

Which statement is true? Question 10 options: A) |13| = – 13 B) – |13| = 13 C) |–13| = 13 D) – |–13| = 13

Answers

Answer:

The answer is C

Step-by-step explanation:

Every negative or positive number in the modulus while be positive at the end

The true statement is C) |–13| = 13, indicating that the absolute value of -13 is 13, representing the distance of -13 from zero on the number line.

How to Solve Absolute Value Equations?

The true statement is: C) |–13| = 13, as explained below.

The expression |–13| represents the absolute value of -13, which is the distance of -13 from zero on the number line, always resulting in a non-negative value.

|–13| = 13, because the absolute value of -13 is 13, meaning it is 13 units away from zero on the number line. So, the correct option is C) |–13| = 13.

Learn more about Absolute Value on:

https://brainly.com/question/12928519

#SPJ6

ASAP! GIVING BRAINLIEST! Please read the question THEN answer correctly! No guessing.

Answers

Answer:

x > 5

Step-by-step explanation:

Subtract 7 from both sides, like so:

x + 7 > 12

  - 7      - 7

________

x > 5

The amplitude of y= – sin is
b 0
C2
d 1

Answers

Answer:

  d.  1

Step-by-step explanation:

The amplitude of such a function is the magnitude of the coefficient of the sine function.

  |-1| = 1 . . . . the amplitude . . . matches choice D

Find the value of x.

Answers

Answer:

x = 61

Step-by-step explanation:

x and 29 are complementary angles  so they add to 90 degrees

x+29 = 90

Subtract 29 from each side

x+29-29 = 90-29

x = 61

Answer:

61 degrees = x

Step-by-step explanation:

Since angle measures x and 29 are complementary angles, subtract 29 from 90 degrees.

90 - 29 = 61 degrees is the value of x

PLEASE HELP me with the magic square

Answers

Fill in each slot in the square with variables a, b, c, d, and e, in order from left-to-right, top-to-bottom. In a magic square, the sums across rows, columns, and diagonals all add up to the same number called the magic sum.

The magic sum is -3.9, since "diagonal 2" (bottom left to top right) has all the information we need:

3 + (-1.3) + (-5.6) = -3.9

Use this to find the remaining elements

row 1:

a + b + (-5.6) = -3.9

row 2:

c + (-1.3) + d = -3.9

row 3:

3 + e + 0.02 = -3.9

column 1:

a + c + 3 = -3.9

column 2:

b + (-1.3) + e = -3.9

column 3:

(-5.6) + d + 0.02 = -3.9

diagonal 1 (top left to bottom right):

a + (-1.3) + 0.02 = -3.9

You will find

a = -2.62

b = 4.32

c = -4.28

d = 1.68

e = -6.92

find the slope of the line passing through the points (6,9) and (6, -1)

Answers

Answer:

Undefined

Step-by-step explanation:

M=undefined

Slope = y2-y1 /x2- x1

=9 -(-1). / 6-6

= 10/0 = infinity ; undefined

If you were to roll a six-sided number cube 60 times, about how many times would you expect the number cube to land on a 1?

Answers

Answer:

10

Step-by-step explanation:

Probability is the likeliness of happening of an event.

Probability of any event A can be be defined by

no. of time event A happens/ total no. all possible  event that can occur

___________________________________

In the problem

probability of occurrence of 1 on rolling a cube is needed.

A cube has six sides with one written on one sides and rest has 2,3,4,5,6.

No of times 1 can occur on rolling the dice once will be = 1

Since there six sides and and each has different number (1,2,3,4,5,6)

There is chance that each of the number can come.

Thus, total no possible outcome = 6

Probability of occurrence of 1 = No of times 1 occurs on rolling the dice /total no possible outcome    = 1/6

_____________________________________________

If dice is rolled 1 time there is 1/6 chance that 1 will be the outcome.

If dice is rolled 1*60 time then there is 1/6*60= 10 chance that 1 will be the outcome

Thus , If you were to roll a six-sided number cube 60 times, about 10  times it is  expected that  the number cube to land on a 1.

Answer:

20

Step-by-step explanation:

b. David and Andrew are traveling to a Mathematics conference. David travels 110 miles in the same time that Andrew travels 140 miles. Andrew travels 15 miles per hour faster than David. Find the average rate of each person.

Answers

Answer:

Its 14 and 19

Step-by-step explanation:

Answer:

b. About 15 miles

Step-by-step explanation:

got it right on edge

An above-ground swimming pool is 5 feet long, 4 feet wide, and 3 feet deep and is shaped like a rectangular prism. A rectangular prism has a length of 5 feet, height of 3 feet, and width of feet. If you use a net to find the amount of material used to make the pool, what faces are included in the calculation?

Answers

Answer:

  the faces representing the sides and bottom of the pool are included

Step-by-step explanation:

Obviously, there is no pool material covering the top of the pool. Rather, it is "an open-top box", so the area of the faces of the box does not include the area of the top. The five faces other than the top face are included.

Answer:

First answer is 1

Second is 2

Third is 2

If you make $ 18,720 a year what is your monthly wage ?

Answers

Answer:

1,560.00 per month

Answer:

1,560

18,720/12 months in a  year = 1,560 per month

hope this helps

Step-by-step explanation:

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