Mathematics High School

Jakob is asking to simplify the expression -3a + 4b + 5a + (-7b).

He writes: -3a + 4b + 5a + (7b) = -3a + 5a + 4b + (7b).

Which property allows him to do this?


A. the associative property


B. the commutative property


C. the distributive property


D. the additive identity property

Answers

Answer 1

Answer:

B. Commutative

Step-by-step explanation:

He can do that because it's a sum

Answer 2

Answer:B

Step-by-step explanation:

Related Questions

The closure properties of polynomials are similar to other closure properties. Which closure properties are similar to the closure properties of polynomials?

Answers

Answer:

The closure property of integers

Step-by-step explanation:

The addition closure properties of integers are similar

The closure property when adding integers are similar

It is similar because, when we add two polynomials, we get another polynomial

Also, when we add two integers, we get another integer

So we can conclude that the closure property of adding integers is similar

IM ABOUT TO FAIL HELP PLZ!!!!!!!!
What is the change in temperature from -8°F to 14°F?

-22°F
6°F
22°F
-6°F

Answers

The difference between -8 F and 14 F is 22 F.

Calculate the mean of: 4.6, 3, 8.1, 9, 12, 3, 9, 3.5, 7, 3.
6.22
5.8
9
3

Answers

Answer:

7.3

Step-by-step explanation:

The mean of 4.6, 3, 8.1, 9, 12, 3, 9, 3.5, 7, 3. 6, 22 , 5.8 , 9 , 3 is 7.3

Answer:

5.8

Step-by-step explanation:

First put all the numbers in order from least to greatest.

3, 3, 3, 3.5, 4.6, 7, 8.1, 9, 9, 12

There are two middle numbers, 4.6 and 7. Average them to get 5.8.

please help i’ll give 14 points

Answers

with all them ??? witch ones you need help with?

will mark brainliest

Answers

Answer:

E

Step-by-step explanation:

The correct answer for this is E

Factor completely x2 − 8x + 16

Answers

Step-by-step explanation:

(x-4)(x-4)

or

(x-4)^2

Select all of the true statements. Group of answer choices π is the constant of proportionality relating the diameter of a circle to its circumference. π is the area of a circle of diameter 1. π is the circumference of a circle of radius 1. π is the circumference of a circle of diameter 1. π is the constant of proportionality relating the radius of a circle to its area. π is the area of a circle of radius 1.

Answers

Answer:

π is the constant ...... circle to its circumference

π is the area .... radius 1

Step-by-step explanation:

π is a mathematical constant, defined as ratio of circle's circumference to its diameter.

π is area of circle of radium 1. Area = π r^2 = π (1)^2 = 1

What is -1 3 10 + (-3.8)?​

Answers

Answer:

1

Step-by-step explanation:

1

z+14.5=5.4
z=
-14=c-10
c=

Answers

Answer:

x+2y=4 , x−y=−3

6x2+3y2=12, x+y=2

x+y=4, x−y=2

Step-by-step explanation:

The chosen topic is not meant for use with this type of problem.

What is the first step in the decision-making process?
O Take action.
O Get information.
O Form a decision.
O Identify the choices.

Answers

The correct is going to be “Identify the Choices”.
Hope this helps! :))

Identify the fraction that is equivalent to 3/8
A. 15/32
B. 12/32
C. 12/24
D. 9/32

Answers

Answer:

The answer is B

Step-by-step explanation:

plz mark brainliest i answered first

Answer:

12/32 is equivalent to 3/8

PLS HELP ME Pls help me I really need it


3 is a Name a chord that is not a diameter​

Answers

Answer:

by-step explanation:

73yd+(x+32yd) answer

Answers

Answer:

Step-by-step explanation:

73yd + x + 23yd

Solving like terms

96yd + x

105yd + x

first combine like terms

73yd + 32yd = 105yd

then add your x

105yd + x

hope that helps!

A store has a sell. You can purchase 3 cds for 45$. Which ratio describes the unit rate

Answers

Answer:

$15 for 1 CD or 15:1

Step-by-step explanation:

You just divide 45 by 3 and get your answer for value per CD. :)

m= -(4+m)+2
solve for m

Answers

Answer:

m = -1

Step-by-step explanation:

m = - (4 + m) + 2

m = -4 - m + 2

m = -2 - m

+m       +m

2m = -2

/2      /2

m = -1

Hope this helps!

Answer:

m=-1

Step-by-step explanation:

m = - ( 4 + m ) + 2

m - 2 = - ( 4 + m )

m - 2 = - 4 - m

m + m = - 4 +  2

2 m = - 2

m = - (1/2)

m = - 1

PLEASE I NEED SOMEONE
ILL GIVE BRAINLIEST

When you add a positive number and a negative number, how can you tell whether the sum will be positive or negative?
A.
The sum will always be negative.

B.
The sum will always be positive.

C.
The sum will have the sign of the addend with the lesser absolute value.

D.
The sum will have the sign of the addend with the greater absolute value.
PICK RIGHT ONE PLEASE
THANKSSSSSS

Answers

Answer:

D

Step-by-step explanation:

please give brainliest!

for example -3 + 6 is 3. --positive sign

-9+8 is -1 --negative sign

What is the slope of the line represented by the equation y=-1/2x+ 1/4 ?
a. -1/2
b. -1/4
c. 1/4
d. 1/2

Answers

Answer: A. -1/2

Step-by-step explanation:

In the equation shown, what is the value of n?
9^7/9^n=9^2

PLEASE HELP

Answers

Answer:

n=5

Step-by-step explanation:

All of the bases are 9 so you can set the exponents equal to each other.

Exponents in a fraction mean subtraction so 7-n = 2

-n=-5

n=5

Please help me I acc don’t know it

Answers

(1,2.5)

Explanation
use the midpoint formula
(x+x/2)(y+y/2)

Describe the transformations that were applied to the parent function
f(x)=|x|-5

Answers

Vertical shift down 5 units

Answer:

Shifted 5 units down

Step-by-step explanation:

Complete the following table with the properties used to
solve
4(x + 3) = 20.
Statements
Proof
4(x + 3) = 20
Given
4x + 12 = 20
4x = 8
x = 2

Answers

Answer:

x = 2

distributive property of equality, subtraction property of equality, and division property of equality

Step-by-step explanation:

(Proof is in parenthesis)

4(x + 3) = 20 (Given)

4x + 12 = 20 (distributive property of equality)

4x = 8 (subtraction property of equality)

x = 2 (division property of equality)

Daniel has 15 yards of fabric to make baby blankets. It takes 1 and 1/2 yards of fabric to make each blanket, and the expression that models the situation is 15 minus three-halves y. Which of the following are possible numbers of blankets that Daniel could make? Select all that apply. 9 10 11 12 15

Answers

Answer:

It's 9 and 10

I was going to put a picture but it wouldn't let me:P

Answer:

9 + 10

Step-by-step explanation:

A pizza company offers a 5-topping large pizza for $22. They also offer a 3-topping large pizza for $18. Write a linear equation to represent the scenario. Be sure the equation is in slope-intercept form.

Answers

Answer:

Im not really sure, how many equations do you need? Do you one whole equation or 2?

Can someone please help me. I think the answer is Y= -14 but I’m not sure

Answers

Answer:

yep your correct!

Step-by-step explanation:

i did 5(-2) -4

which is -10 -4

and that will equal -14!

hope this helps u!

Answer:

-14

Step-by-step explanation:

because if x is -2 we have y=5.(-2)-4 and that's y=-10-4 and that's y=-14

The graph below shows the cost of pens based on the number of pens in a pack. What would be the cost of one pen?

$0.57
$1.75
$5.50
$6.50​

Answers

Answer:

$1.75

Step-by-step explanation:

Honestly, you don't really have to pay attention to the other numbers or ratios on the graph until you think you found your answer. Pay attention to whichever ratio you choose and follow these steps:

1. Identify which number is the cost and which is the amount of pens bought

2. Set it up as a division problem by using the cost and the dividend and the amount of pens as the divisor

3. After you have your answer, plot your ratio of 1:(your product) and if the line that was graphed is straight, you are correct.

PS. I used the ratio (2:3.5) to solve this problem

6th grade math i mark as brainliest​

Answers

step (1) 32+23*4 =124 step (2) 9+23*4= 101  step (3) 9+9*4=45 step 4 9+35=44

Step-by-step explanation:

WILL MARK BRAINIEST! find the x intercept of each line defined below compare their values. NOTE- please state what the intercept of line a and b is as well as which one is greater. Thanks

Answers

Answer:

im pretty sure its 2

the intercept would be -2/2

Step-by-step explanation:

Please help me with is problem

Answers

Answer:

Its A :)

Step-by-step explanation:

Tannis's first machine could throw a car 272727 meters. She studied her first machine and built a better one. Her second machine could throw a car 777 times as far.
How far does the second machine throw a car?

Answers

Answer:

The rate of change of the distance between the cars at that instant is 5.46 meters per second

Step-by-step explanation:

Speed of first car = 7 m/s

Speed of second car = 3 m/s

At instant, distance of first car from intersection = 5 meters

distance of second car from intersection = 12 meters

Therefore, we have

Distance between both cars at intant = √(12² + 5²) = 13 m

Rate of change of distance is given by;

2ddd/dt = d(x² + y²)/dt = 2xdx/dt + 2ydy/dt

= 26dd/dt = 2×5×7 + 2×12×3 = 142

dd/dt = 142/26 = 5.46 m/s.

That is the rate of change of the distance between the cars at that instant = 5.46 meters per second.

what type of force is when an object is pushed or pulled by another object?

Applied Force
Gravity
Normal
Friction

Answers

No it’s applied force since you the person pulling and pushing an object is putting force :D

Answer:

The answer is Applied Force! I just took the quiz and got it correct! hope this helps!! <333

Step-by-step explanation:

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