describe how you know that (8+9) + 3 is equivalent to 8+ ( 9 + 3). what is the benefit to using this property? ​

Answers

Answer 1
The equations are equivalent because of PEMDAS. The benefit of using this property is that it is the same procedure each time and you are only adding throughout this equation, so no matter the order you put the numbers in, the outcome will always be the same.

Related Questions

Find the measure of the supplement of a
16° angle.

Answers

Answer:

164

Step-by-step explanation:

Hey There!

If they are supplementary angles then they will add up to equal 180

So given one of the angles (16) we subtract that from 180 to find the value of the missing angle

180-16=164

Your answer is 164

Hope this helps :)

A membership at Gisele’s Gym costs $145 to join and $3 for each visit.

A membership at Freddie’s Fitness costs $75 to join and $5 for each visit.

For which number of visits would both locations have the same total cost?​

Answers

v = number of visits
145 + 3v = 75 + 5v
70 = 2v
v = 35

Check the math:
145 + 3(35) = 145 + 105 = $250
75 + 5(35) = 75 + 175 = $250

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The Large Cardinal Project.

Answers

Answer:

1

Step-by-step explanation:

Door
½ gallon per 2 doors
Bench
⅓ gallon per bench
Austin has 4 gallons of paint. He painted 8 doors. How many benches can he paint with the paint that is left? Show your work. Use the chart to help you.

Answers

Answer:

77

Step-by-step explanation:

that is the answer i got i did a quiz with the same question not too long and i got a 100 and i putt 77 aas my answer!!!!!!!!1

You are the manager of a restaurant that delivers pizza to college dormitory rooms. You have just changed your delivery process in an effort to reduce the mean time between the order and completion of delivery from the current 21 minutes. A sample of 36 orders using the new delivery process yields a sample mean of 22.4 minutes and a sample standard deviation of 6 minutes.
A.) Please compute the test statistic. Please round to four decimal places.
B.) Please determine the p-value. Please round to four decimal places.
C.) Using a 0.05 level of significance, please provide the critical value for the appropriate test. Please round to four decimal places.
D.) Using a 0.05 level of significance, is there evidence that the population mean delivery time has been reduced below the previous population mean value of 25 minutes?

Answers

Answer:

1.4000 ;

0.0807 ;

1.69 ;

Fail to reject the Null

Step-by-step explanation:

Given :

μ = 21 minutes

x = 22.4 minutes

Sample size, n = 36

Standard deviation, s = 6

H0: μ ≥ 21

H1: μ < 21

Test statistic : (x - μ) ÷ s/sqrt(n)

Test statistic : (22.4 - 21) ÷ 6/sqrt(36)

Test statistic : 1.4 ÷ 1

Test statistic = 1.4000

Pvalue : Using the Test statistic value at α = 0.05 ; One - tail test = 0.0807

The t critical value using a critical value calculator ; DF = (n - 1) = 36 - 1 = 35 ; α = 0.05 = 1.69

Decision region :

Reject H0 if

|Test statistic| > |critical value|

1.4 < 1.69

Hence, we fail to reject H0

There isn't enough evidence they delivery time has been reduced below previous mean

subtract and write the difference in simplest form 12 5/8 - 7 1/3

Answers

Answer:

5 7/24

Step-by-step explanation:

Given the following mathematical expression;

12 5/8 - 7 1/3

First of all, we would subtract the whole numbers;

12 5/8 - 7 1/3 = (12 - 7) 5/8 - 1/3

12 5/8 - 7 1/3 = 5 [5/8 - 1/3]

Next, we subtract the fractions from each other;

5/8 - 1/3

Lowest common multiple (lcm) = 24

5/8 - 1/3 = (15 - 8)/24

5/8 - 1/3 = 7/24

Combining the two parts, we have;

12 5/8 - 7 1/3 = 5 7/24

Factor completely and then place the factors in the proper location on the grid. 4 a2 - 8 a - 5

Answers

Step-by-step explanation:

(2a + 1)(2a - 5)

-1/2 and 5/2 are factors

point on graph are (-1/2,0) (5/2,0)

A rectangular pool has a width of 24 feet. A second rectangular pool has a perimeter of 48 feet, which
is __1
3
the perimeter of the first pool

Answers

Answer:

Let x = the length

Let P = the perimeter of the first pool

48 = (1/3)P

144 feet = P

P = 2l + 2w

144 = 2x + 2(24)

144 = 2x + 48

96 = 2x

48 feet = x

Logan is going to invest $61,000 and leave it in an account for 20 years. Assuming
the interest is compounded continuously, what interest rate, to the nearest
hundredth of a percent, would be required in order for Logan to end up with
$103,000?

Answers

Answer:

its 2.62

Step-by-step explanation:

Answer:

its 2.62  

Step-by-step explanation:

for the water balloon fight your mom filled up 100 balloons with 5 gallons of water how many ounces of water did she use make sure to label your ounces 

Answers

Answer:

Step-by-step explanation: I don’t know

how do i solve this and what is the answer?

Answers

Answer:

I totally get why you are asking , how do I solve this.  there is so much implied about this

Step-by-step explanation:

1st you have to recognize that ∠ACB ( in my drawing ) has that same angle as the arc from A to B  ,  so that's implied.   next you have to recognize that the triangle formed by ACB with the 124 degree angle at C is an isosceles and therefore has identical angles at A and B  so that's  180 = 124 + 2A  , so A = 28° and so does B , then , b/c we know that small angle... you also have to know, that the line AC is perpendicular to AD.  that they from a right angle and there for... you now know , that ∠BAD is the other part of that 90 or 90= 28 + ∠BAD so  ∠BAD = 62°

I went through that kinda fast, there was several "leaps" of using logic to get to the correct answer , using things you know from prior understanding about angles , circles  and geometry,  you are putting all of the parts together here.  :/  kinda daunting in some ways.

In how many ways can a teacher seat 5 girls and 2 boys in a row of 7
seats if a boy must be seated in the first seat and a girl in the last seat.

Answers

Answer:

I Don't Know

Step-by-step explanation:

Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!Sry!!!

Unit 3 Mid - Assessment
The time in the coordinate grid passes through the points( 4, -3)and (6,-1). What is the value of B if written in a slope-intercept form of y=Mx+b


Answers

Y=1x-7 is the equation and -7 is the value of B

What are the known solutions to f(x)=g(x) ?
Select each correct answer.
A.1
B.3
C.5
D.7
E.11

Answers

C lol ....... !/&:’zj

Answer:

C IF NOT D

Step-by-step explanation:

Evaluate −6 − (−1). (1 point)

Select one:
a. −7
b. 5
c. −5
d. 6

Answers

The answer would be negative 5

Mrs. Montgomery earns a 6.5% commission on her total sales. Last month, she had sales of $55,780,

How much commission did Mrs. Montgomery earn last month?

What was her total pay for the month?

Round your answers to two decimal places.

Answers

try using the steps in my question i have one just like you

Step-by-step explanation:

This is the pic to the question :)

Answers

T-shirts = £ 17.82

Paintbrushes = £ 13.94

Pasta = £ 3.52

Total = £ 76.53

I need help with this​

Answers

27 1/2 hope this helps

Answer:

27 1/2

Step-by-step explanation:

I don't know how to find this angle.​

Answers

Answer:

i think it is at least sum where between the 30s and 40s

Step-by-step explanation:

A figure is graphed in the coordinate plane. Which pair of transformations will NOT preserve the size and the shape of the figure?

A. Reflect the figure over the line y = x and then translate it 2 units up

B. Translate the figure 3 units to the left and then dilate by a scale factor of 4

C. Rotate 90 degrees counterclockwise and then dilate by a scale factor of 1

To state the figure 180 degrees counter-clockwise about the origin and then reflect it over the y-axis

Answers

The transformations which is NOT preserve the size and the shape of the figure is dilate by a scale factor of 4 (B) and dilate by a scale factor of 1 (C).

What is the dilation of the figure?

Dilation of a figure, means the transformation of the figure. The factor by which the given figure dilated, called the scale factor of dilation.

When a figure is dilated, the size of the original figure is changed.

A figure is graphed in the coordinate plane. Let's check all the option for the transformation of original figure.

A. Reflect the figure over the line y = x and then translate it 2 units up- Reflection and translation of a figure does not changes its shape and size.B. Translate the figure 3 units to the left and then dilate by a scale factor of 4- With the scale factor of dilation, the size of the figure will be changed for this case.C. Rotate 90 degrees counterclockwise and then dilate by a scale factor of 1- In this case, there the figure is dilated with a scale factor of 1. This will change the size of the original figure.D. To state the figure 180 degrees counterclockwise about the origin and then reflect it over the y-axis- In this case the shape and size does not change.

Hence, the transformations which is NOT preserve the size and the shape of the figure is dilate by a scale factor of 4 (B) and dilate by a scale factor of 1 (C).

Learn more about the dilation of the figure here;

https://brainly.com/question/3457976

Plz help me I need help with math plz anyone who good at math

Answers

Answer

6 is the correct answer.

Step-by-step explanation:

You need to know sin(60) = root(3)/2 = a/(4root(3)), then you can solve for 'a', get a = 6.

i’m not sure try a formula

PLEASE HELP!!!!!!!!!!! A clown has two performances today, in cities A and B, which are 240 km apart. The clown drives from City A to City B at a certain speed and performs. On his way back to City A, he drives half the distance at the same speed as before, but then increases his speed by 10 km/h to be on time for his performance in City A. Thus, the drive from B to A takes 2/5 of an hour less than the drive from A to B. At what speed does the clown drive from A to B?

Answers

Answer: 50 km/hr

240 = rt

120 = rt1

120 = (r+10)t2

t1 + t2 = t - 2/5 ==> t2 = 1/2 t - 2/5

So you get

240 = rt

120 = (r + 10)(1/2 t - 2/5)

Solve the system

You het 50 km/hr

Both Amy and Ed travel 100 miles to their destination. They begin at the same
time, but Amy drives at 50 miles per hour and Ed drives at 40 miles per hour.
How much sooner will Amy arrive to the destination than Ed?

Answers

Answer:

Since there are two cars, each car, then, drove 104/2 = 52 miles. But one car is traveling 8 miles per hour faster.

Step-by-step explanation:

Due NOW!!! Please help!

Answers

Answer:

At x = 7 and x= 1

Step-by-step explanation:

Set each equation equal to 0 and solve.

x - 7 = 0

x = 7

x-1 =0

x = 1

X=1 happy to help ! :)

Felicity needs to buy 3 dozen cookies for a party. The first 16 cookies cost $0.28 each. The rest cost $0.19.
What is Felicity's total cost?

Answers

Answer: $8.28

Step-by-step explanation: 3 dozens are 36 cookies. The first 16, $0.28 each will be $4.48. The rest will cost $0.19 each so $0.19 x 20 = $3.80

$4.48 + $3.80 =

Answer:$8.28

Step-by-step explanation

Multiply 16x0.28 you will get $4.48 then

you Multiply 20x0.19 you get 3.8 also known as 3.80 you add

3.80+4.48+$8.28

14 + 6z - 10 + 9z equaled to?!

Answers

Answer:

4 + 15z

Step-by-step explanation:

Is your simplified expression.

Answer:

15z + 4

Step-by-step explanation:

6z + 9z = 15z14 - 10 = 4Put them together: 15z + 4

I hope this helps!

How do you divide 336 by 6 by long dvision step by step?

Answers

Answer:

56 is your answer

Step-by-step explanation:

336/6=(56×3)/3=56

Someone please help:)

Answers

Answer:

2. Addition property of inequality. You're adding 6x to both sides.

3. 4x = 28

4. 4x/4 = 28/4 Justification: Division property of inequality

You're dividing both sides by 4.

5. x = 7

Hope that helps.

HELP ASAP PLS!!


what is composite area?? How do we use it in the real world???

Answers

Answer:

A composite figure (or shape) is one that can be separated into more than one of the basic figures. Examples of using it in the real world is building cars or houses.

Factor 24j-16 to identify the equivalent expressions. Its multiple choice. A=8(3j−2) B=6(4j−2j) C=4(6j−4) D2(12−8)​

Answers

Answer:

I would say either A or C

Step-by-step explanation:

because when you distribute both they both come out to be 24j - 16

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