What's the property of equality of r- 20 = 30

Answers

Answer 1

Answer:

r= 10

Step-by-step explanation:

30 - 20 = 10

Answer 2

Addition Property: For all real numbers x,y, and z , if x=y , then x+z=y+z .

eflexive Property: For all real numbers x , x=x . A number equals itself.

Subtraction Property: For all real numbers x,y, and z , if x=y , then x−z=y−z .

so its subtraction property


Related Questions

How many photos in the shape of a parallelogram will it take to cover the bulletin board if each photo has a base of 6 inches and a height of 4 inches?

Answers

Answer:36

Step-by-step explanation:

I took the assignment

Answer:

It is 36

Step-by-step explanation:

I too has did assignemnt

Alicia purchased H half-gallons of ice cream for $3.50 each and P packages of ice cream cones for
$2.50 each. She purchased 14 items and spent $43. Which system of equations could be used to
determine how many of each item Alicia purchased?
(1) 3.50H + 2.50P = 43 (3) 3.50H + 2.50P = 14
H+P = 14
H+ P = 43
(2) 3.50P+2.50H = 43
P+ H = 14
(4) 3.50P + 2.50H = 14
P+H = 43

Answers

Answer:

3.50H + 2.50P = 43

Step-by-step explanation:

Source: Trust me bro

A student walks at a rate of 1.5 meters per second for 4 seconds and then stops for 4 seconds. Then the student
continues walking at the original rate.
Which graph best represents the student's walk?

Answers

Answer:

A

Step-by-step explanation:

I finished the question and got it right

Graph is a way to represent a lot of data in a visual formal. The graph that best represents the student's walk is graph A.

What is a graph?

A graph is a way to represent a lot of data in such a visual formal that it is easy for the user to understand the complete information in one go. Usually, the line of the graph is a function that follows the graph.

As we can see that the y-axis of the graph represents the distance traveled by the student while, the time taken by the student to cover the distance is given on the x-axis.

We know that the rate of 1.5 meters per second, means that the student will cover the 1.5 meters in 1 second, therefore, the line will be a slope that will represent the walk of the student. At time t=4 seconds, a student stopped for 4 seconds therefore, the time will increase but the distance will be constant for the student, therefore, the situation will be represented by a horizontal line.

Hence, the graph that best represents the student's walk is graph A.

Learn more about Graph:

https://brainly.com/question/14375099

Use the distributive property to find the equivalent expression.
4(2 + 3v) = +

Answers

Answer:

8+12v

Step-by-step explanation:

y’all help 3 giving brainlest if you help and give steps (send picture of your work if you can)

Answers

Answer 200 to 520 and 300 to 580.

Step-by-step explanation:

Each one increases by 60.

Answer:

They are adding 240 each time so; I'm a little unsure because the top is 160 and that's only 60 but...

Step-by-step explanation:

A line passes through the point (8, -2) and has a slope of 5/4. Write an Equation in point-slope form for this line

Answers

Answer:

y=5/4x-8

Step-by-step explanation:

Answer:

[see below]

Step-by-step explanation:

General Point Slope Form is:

[tex]y-y_1=m(x-x_1)\\\\\rightarrow \text{m - slope}\\\\\rightarrow (x_1,y_1)\text{ - given point}[/tex]

We are given the slope of (5/4) and the point of (8, -2).

Replace the variables with their appropriate values:

[tex]x_1 \rightarrow8\\\\y_1\rightarrow-2\\\\m\rightarrow\frac{5}{4}\\\\\text{Replace } x_1, y_1, \text{and } m \text{ with the appropriate values.}\\\\y-y_1=m(x-x_1)\rightarrow y-(-2)=\frac{5}{4}(x-8)\\\\\text{Simplify:}\\\\y-(-2)=\frac{5}{4}(x-8)\rightarrow y+2=\frac{5}{4}(x-8)\\\\\\\text{Our final answer is:}\\\\ \huge\boxed{y+2=\frac{5}{4}(x-8)}[/tex]

Hope this helps.

Elliot was trying to factor 6z^2-18. He found the greatest common factor of these terms was 6.

Answers

Answer:

6(z^2-3)

Step-by-step explanation:

6z^2-18=6(z^2-3)

(6y + 10) - (2y + 3)

Answers

Answer:

4y+7

Step-by-step explanation:

First, remove the unnecessary parenthesis. Add like terms (In this case it’s y) So it will be 6y-2y. Which gives you 4y. And then after that 10-3, which gives you 7. So your final answer is 4y+7!!

please this is important I really need help

Answers

Answer:

The answer is <DOE

<DOE + <COD = A straight LINE, a.k.a, a LINEar pair

at point (0,2) can be reflected across the x-axis PLEASE HELP 50 POINTS​

Answers

Answer:

(0,-2)

Step-by-step explanation:

In a family of 6 children what is the probability there are exactly 4 girls?

Answers

Answer:

sonn 12 laalkznjsnl nalslaonhfj. alallkzhdbb nLaojahdnldl

PLS HELP I HAVE TO DO THIS BY TONIGHTT

Alicia planted 45 tulip bulbs last year. This year she plans to plant 27 bulbs. Find the percent decrease in thenumber of tulip bulbs.

Answers

I got you !

Step-by-step explanation:

45 bulbs planted in first year.

65 bulbs the next year.

increase = 20 bulbs

Number of increase of planted tulip bulb is N = 65 - 45 = 20

( 20/45)  x 100% = 44.4 % to the nearest tenths

Find the measure of angle b

Answers

10-A
11 C
12 D
13 C
You’re welcome

You are working on decorating your home for the holidays. You enjoy hanging lights and so far have invested in $75 worth of lights. You notice a sale that you can get strands of lights for $5 a box this week. Write an expression that describes your total investment (money spent) in lights, depending on how many boxes (b) you buy.

Answers

Answer:

Step-by-step explanation:

i=75+5b

The expression that describes the total investment(money spent) in light is 75+ 5(b)

What are word problems?

Word problems require the application of algebraic expression in solving real-life problems. It can be expressed with the use of variables and arithmetic operations.

From the given information:

The amount of money invested on lights = $75If a box (b) cost = $5

The total investment spent in light = 75 + 5b

Learn more about word problems here:

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#SPJ6

What is the value of x?
A. 10
B. 15
C. 30
D. 45

Answers

Answer:

15

15

15

15

15 Liaoning dude

Write the slope intercept form of the equation of each line

Answers

Answer:

The slope is 1/4 so the slope intercept form is y=1/4+3

Step-by-step explanation:

To find the slope the easiest way from looking at a graph is just to find the rise over run. From looking at the graph we can see that the next point from 0,3 is 4,4. The y here is increased by 1, which means the rise is 1. The x is increased by 4 so the run is 4. From putting rise (1) over run (4) the slope is 1/4. The formula for slope intercept is y=mx+b. m is slope so we substitue that for 1/4 so now we have y=1/4x+b. Then the b is the y intercept, or, at what point the line crosses the y line. Which in this case is 0,3 so the y intercept would be 3 because that is what height it crosses the y line.

Alonzo has completed 44 Deliveries so far this week he needs to make 55 deliveries for the week what percentage of his delivery has Alonzo completed?80%

Answers

Answer:

80%

Step-by-step explanation:

Find 44/55 and multiply the result by 100%:  (0.8)(100%) = 80% (completed)

Gary started his Saturday with $5 in his pocket. He then set up a lemonade stand and sold cups of lemonade for $1 per cup.

Is this a proportional or additive relationship?

Question 1 options:

Proportional


Additive

Answers

Answer:

it's 5 how did I know bc I'm big brain;p that's the right answers it's ,5...

Answer:

Additive

Step-by-step explanation:

I took the test

Luis has a can of red paint and a can of white paint that are the same size the can of red paint is 2/3 full he mixes in 1/5 of thr can of white paint to make pink paint one the paint is mixed, what fraction of the can is filled with pink paint 1/5 3/8 7/15 13/15​

Answers

Answer:

13/15

Step-by-step explanation:

Hope this helps!

what is the slope intercept form for y-5=3(x-3)

Answers

Answer:y=3x-4

Step-by-step explanation:

you add 5 on both sides

simplify

and get y on one side

slope is 3

the y intercept is -4

A recipe calls for 1 1/2 cups of flour for 1 dozen of cookies. How much flour is needed for 32 cookies?

Answers

Answer :4 cups!

Explanation: 1 1/2 is = to 12 so 1/2 is equal to 4. 1 then is equal to 8 and you multiply by 4 to get 32.

En la multiplicación anterior p y q representan
dígitos diferentes a 0. ¿Cuál es el valor de q?

Answers

Answer:

Hola

Step-by-step explanation:

Intentemos expresar en términos de b. Dado que Q = P / 2 y P = b - 2,. Combinando términos semejantes, tenemos. Dividiendo ambos lados por b, tenemos, que en este caso, cambia ab = 2. Sabemos que P es dos menos que b (P = b - 2), entonces P = 2-2 = 0.

Si desea verificar, b = 2, P = 0 y Q = 0.

se simplifica a porque cualquier cosa multiplicada por 0 es 0.
(lo siento si esto no ayuda)

Si un hombre de 1.75m de altura proyecta una sombra de 3.50m que sombra aproximada proyecta un poste de 8.25m

Answers

Answer:

4.25 m

Step-by-step explanation:

Resolvemos esta pregunta usando la fórmula:

Altura del hombre / Sombra de un hombre = Altura del palo / Sombra del palo

Sombra del hombre = 3.50 m

Altura de un hombre = 1.75 m

Sombra del palo = 8.50 m

Altura del palo = x

Por lo tanto:

1.75 / 3.5 = x / 8.5

Cruz multiplicar

1.75 × 8.5 = 3.5 × x

14.875 = 3.5x

x = 14.875 / 3.5

x = 4.25 metros

Por tanto, la altura del palo = 4.25 m

one step equations word problems. I ONLY NEED 3-8!!!!

Answers

3: 18
4: 17
5: 561
6: 17
7: 23
:)

I need help with geometry

Answers

Answer:

it's option B)...

Step-by-step explanation:

de=8 df=10 a=d

Answer:

It will be D

Step-by-step explanation:

Hope this Helped

BCMSCM-CA-SCIENCECRT

Answers

Answer:

Thanks Lol

Step-by-step explanation:

How many 24-foot jump ropes can be made from a rope that is 100 feet long? Only include numerical answer.

Answers

You can make 4 total 24 foot jump ropes.
100/24=4.17
You cannot have part of a jump rope, so you have to round the answer down to 4

I need help with math if you don't know the answer get out of the question and don't answer it and give the wrong answer or some link or even say "I don't know" or anything like that it's not fair to me cause it a waste of my points I will report your if you do that :) have a nice day and stay safe

Answers

Answer:

each person would get 2.6 apples hope that helps :)

After running for two minutes, a jaguar has gone 180 feet. After five minutes, it has run 450 feet. Write an equation to represent the total distance, y, the jaguar runs in x minutes.A.) y = 45x B.)y = 90x C.)y = 180x D.)y = 450x

Answers

Answer:

B) y=90x

Step-by-step explanation:

The jaguar runs 90 feet in one minute.

2/5 in Fraction form?

Answers

Answer:

2/5 is fraction form.

0.4 is decimal form btw.

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