Mathematics High School

Which of the following statements uses the commutative property of addition?

A) 2+(3+4)=(2+3)+4
B) 2+(3+4)=(2+3)+(2+4)
C) 2+(3+4)=2+(4+3)

Answers

Answer 1

Answer:

B

Step-by-step explanation:

Related Questions

Which shows how to solve the equation -4/5 x = 80 for x in one step?

Answers

Answer:

Add the reciprocal or -4/5 which is +5/4 and then add it

Step-by-step explanation:

What is most likely the line of best fit for this scatter plot? (5 points)
А
20
18
16
14
12
10
3
6
9 10 12 14
Line A
Line B
O
Line C
Line D

Answers

Answer:

Line C

Step-by-step explanation:

The scatter plot follows line C the most.

Hope this helps! :)

It’s C. I mean just look at it. I don’t even have to explain why.

5 x 143 = 5 x ( + + ) write 143 in expanded form.

Answers

Answer:

Step-by-step explanation:

143 = 100 + 4 0 + 3

5*(143) = 5 * (100 + 40 + 3)

           = 5*100 + 5*40 +5*3

           = 500 + 200 + 15

           = 715

Taylor tried to solve a math equation step by step
7(y+4.5) = 32.5

7y + 4.5 = 32.5 (step one)

7y = 28 (step two)

y = 4 (step three)


In which step did taylor make a mistake or did she not make any mistakes?

Answers

Answer:

Step one - she didn't multiply the 4.5 with the 7

PLEASE HURRY!!!
Fill in the blanks to complete the equation that describes the diagram.

Answers

Answer:

-5

-3 + -5 = -8

The point-slope form of the equation of the line that passes through (44, -3) and (12, 1) is y-1 = (x - 12). What is
the standard form of the equation for this line?

Answers

Answer:

-y+(x-12)=-1

Step-by-step explanation:

Determine between which two integers the following irrational number lie square root 4 square root 21​

Answers

Answer:

25

Step-by-step explanation:

that what i got

This is an example of a random sample: Marley surveys her swim teammates about their favorite sport.
O True
O False

Answers

False is the answer

Answer:

false

Step-by-step explanation:

Please help I don’t understand

Answers

Answer:

_____

Step-by-step explanation:

its saying that the height of the tree is half of 160

(i think)

What is the product of (3x + 1)(3x – 4)?
Step by step.

Answers

Answer:

9x^2-9x-3

Step-by-step explanation:

3x*3x=9x^2

3x*-4=-12x

1*3x=3x

1*-4=-3

9x^2-12x+3x-3

9x^2-9x-3

Answer:

9x^2 - 9x - 4

Step-by-step explanation:

(3x + 1)(3x – 4)

Here you can use the FOIL method (FOIL stands for: First, Outer, Inner and Last)

First you multiply 3x by 3x since these are the First inside both binomials.

3x * 3x = 9x^2

Then you multiply 3x by -4 since these are the Outer inside both binomials.

3x * -4 = -12x

Then you multiply 1 by 3x since these are the Inner inside both binomials.

1 * 3x = 3x

Then you multiply 1 by -4 since these are the Outer inside both binomials.

1 * -4 = -4

And finally add everything together:

9x^2 + (-12x) + 3x + (-4)

Since adding a negative number is the same as subtracting it:

9x^2 - 12x + 3x - 4

We can now simplify this a little by adding all the x's together:

9x^2 - (12x + 3x) - 4 =

9x^2 - 9x - 4

Hope I could help you understand!

If you still wonder anything, don't hesitate to ask in the comments below!

Have a wonderful day! (●'◡'●)

Priya's family exchanged 250 dollars for 4250 pesos. Priya bought a sweater that was for 25 dollars. How many pesos did she spend?

Answers

Answer:

P425

Step-by-step explanation:

Given data

We are given that the family exchanged

$250 for P4250

the rate is

$250 for P4250

$1  will be x

x= 4250/250

x= P17

the pesos equivalent of $25 will be

= 25*17

= P425

which expression is equivalent to (3b+2r)+(4b+r)​

Answers

I think that it’s 7b + 3r.

Answer:

7b+3r

Step-by-step explanation:

Combine all like terms

Factor the trionomial below. x^2 + 6x - 27

Answers

Answer:

(x−3)(x+9)

Step-by-step explanation:

The middle number is 6 and the last number is -27.

Factoring means we want something like

(x+_)(x+_)

Which numbers go in the blanks?

We need two numbers that...

Add together to get 6

Multiply together to get -27

Can you think of the two numbers?

Try -3 and 9:

-3+9 = 6

-3*9 = -27

Fill in the blanks in

(x+_)(x+_)

with -3 and 9 to get...

(x-3)(x+9)

Plz help ASAP with circles

Answers

Answer:

c. 11

Step-by-step explanation:

By the property of intersecting secants outside of a circle, we have:

[tex] m\angle R = \frac{1}{2} \times (175\degree - 75\degree) [/tex]

[tex] m\angle R = \frac{1}{2} \times 100\degree [/tex]

[tex] (4x+6)\degree = 50\degree [/tex]

4x + 6 = 50

4x = 50 - 6

4x = 44

[tex] x = \frac{44}{4} [/tex]

x = 11

Is x = 5 the solution to 2x - 3 = 6
(show me why! Or maybe why not)

Answers

Answer:

no

Step-by-step explanation:

2 times x or 5 which is 10

then subtract ten by 3

which is 7 not 6

(Brainliest?)

Welcome!

w you mama daddy daddy bye buddy bye bye buddy thanks bye bye

Eber ran 3 miles. He stopped to take a break every 34 mile. How many times did Eber stop, including his final stop at the end of his run? Use the model to help you answer this question.

Answers

144 because when you divide them and simplify

The number of times that Eber stop, including his final stop at the end of his run, will be 4 times.

What is Algebra?

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

Eber ran 3 miles. He stopped to take a break every 3/4 mile.

Then the number of times that Eber stop, including his final stop at the end of his run, will be given as,

⇒ 3 ÷ (3/4)

⇒ 3 x (4 / 3)

⇒ 4 times

The number of times that Eber stop, including his final stop at the end of his run, will be 4 times.

More about the Algebra link is given below.

https://brainly.com/question/953809

#SPJ5

HELP ASAPPPP!!!!! NOW NOW NOW

Answers

Answer:

The answer is 4.

Step-by-step explanation:

If you put four dashes on the number line, you will end up with fifths.

Answer:

4

Step-by-step explanation: A general rule of thumb is that the answer for these types of problems is always 1 less than the number of segments needed. For example, 7ths would = 6 cuts and 3rds would be 2 cuts.

ahhhh if someone can please help!!

Answers

Answer and Step-by-step explanation:

The y-intercept is (0, 3)

The value 3 is in the y place.

#teamtrees #WAP (Water And Plant)

I think it’s gonna be 3 the red box

Which of the following is considered as constant?

A. x
B. 5a
C. x-3y
D. 300​

Answers

Answer:

300

Step-by-step explanation:

hope the above solution will help you

Answer:

D. 300

Step-by-step explanation:

Constants don't have any variables involved (x, y).

H E L P- A G A I N (im dum ok? also no scam answers please.)

Answers

Answer:

a.Equation :y=40-2.5x

b.straight, decreases, the same

Step-by-step explanation:

solve the system by substitution 6x-2y=26 and -y+3=x

Answers

The answer would be (4,-1)
Hope this helped! :)

ez pts someebody help find the equation axis of symmetry of y=-2(x-3)^2 +4

Answers

Answer:

x = 3

Step-by-step explanation:

Given function:

y= -2(x-3)² +4

Vertex form:

y = a(x − h)² + k

Axis of symmetry is the line parallel to y-axis and passes through vertex. The x-coordinate of the vertex is determined by the value of h in the above equation.

We have h = 3 as per given equation for the function.

Axis of symmetry is the line x = 3

estimate the circumference of a circle that has a diameter of 13 yd?
​

Answers

Answer:

a little bit more than 37.70 yards

Step-by-step explanation:

your welome

laura has 160 pounds of green beans at her vegetable stand. she sells 10 pounds of green beans every hour, what is the percent decrease in green beans after 3 hours?​

Answers

Answer:

18.75%

Step-by-step explanation:

Green beans = 160 pounds

Amount sold in 1 hour = 10 pounds

Amount sold in 3 hours = 3x10= 30 pounds

Decrease in 3 hours = 30 pounds

% decrease = (30/160) x 100

=300/16

=75/4

=18.75%

The ratio of a model car to a regular car is 1:16. The model is 6.25 inches long. What is the length of the actual car in feet and inches? what if the ratio of the model car was 2:35, then what would be the actual length of the car?

Answers

Answer:

Step-by-step explanation:

model car 1 : regular car 16

model 6.25 inches : actual car 6.25*16 = 100 inches

1foot = 12 inches

100/12 = 8 feet and 4 inches

model car 2 : regular car 35

model 6.25 inches : actual car 6.25*35/2 = 109. 375 inches

I need help.........​

Answers

9514 1404 393

Answer:

s = 17t = 5

Step-by-step explanation:

The midpoint formula is useful here. For midpoint M, we have ...

  M = (C + D)/2

  2M = C + D

  2(10, 10) = (15, s) +(t, 3)

  (20, 20) = (15+t, s+3)

  t = 20 -15 = 5

  s = 20 -3 = 17

__

Check

  (C +D)/2 = ((15, 17) +(5, 3))/2 = (20, 20)/2 = (10, 10) . . . checks OK

What is the measure of XZW

Answers

Answer:

∠XZW = 95°

Step-by-step explanation:

∠YXZ = 180 - 150

∠YXZ = 30°

∠XZY = 180 - (30+65)

∠XZY = 180 - 95

∠XZY = 85°

∠XZW = 180 - 85

∠XZW = 95°

I need help what’s the answer ?

Answers

get photomath it tells u all the answers to math questions

Answer:

4

Step-by-step explanation:

you can subtract them because they in the same family

MARKING YOU BRAINLIST AND 5 STARS! A tire from Karen's car is shown below. Which is the closest to the distance traveled, in feet, after 3 full rotations of the tire? The diameter is 2 feet, by the way.

Answers

Answer:

18.86 feet

Step-by-step explanation:

One rotation of the tire is equal to the circumference of the tire

The formula for circumference of a circle (remember that a tire is shaped as a circle) = πd

where

π = 22/7

d = diameter

The size of one revolution = 2 x 22/7 = 44/7 feet

The distance covered in one rotation of the tire is 44/7 feet

The distance covered in 3 rotations = (44/7) x 3 = 18.86 feet

How can you turn any expression in to a rational expression?

Answers

factor the numerator and the denominator, lost restricted values, cancel common factors, simplify
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