Which property is demonstrated by the equation (5 + a) + 3 = (a + 5) + 3?
Answer:
Communitive Property
Step-by-step explanation:
Commutative property = 2 + 3 = 3 + 2 or 2(3) = 3(2)
Associative Property = (2 x 3) 5 = 2 (3 x 5) or (2 + 3) + 5 = 2 + (3 + 5)
Inverse Property = 2 + (-2) = 0 or (2/1)(½) = 1
Basic Definitions:
Commutative Property - Gives you the ability to switch the order of the numbers in an expression.
Associative Property - Let's you move the parenthesis in an expression but not the numbers.
Inverse - Uses numbers like 0 and 1.
Using these basic definitions and examples, we can summarize that the best answer would be Communitive Property
One newspaper reported that the mayor received a salary increase of 5%.Another paper reported that the mayor’s salary went up $2000. What was the mayor’s salary before the increase?
Answer:
$1900
Step-by-step explanation:
5% increase is $100 dollar
Answer:
Let
x= Mayor’s previous salary
y=his increased salary
5% increase means
(105/100)*x=y——-(1)
From the other reporter
The Mayor’s salary went up $2000
:. y-x=2000———-(2)
Put y= (105/100)*x into equation 2
105x/100 -x =2000
Multiply through by 100
105x-100x=200000
5x=200000
Divide both sides by 5
x=40000
Hence his previous salary was $40,000 and current one is
y=2000 +40000
y=$42000
Step-by-step explanation: from your question, you didn’t state whether it went up by 2000 or went to 2000. I chose went by 2000. If it were to be went to 2000 , the equation will be different. It would been 2000-x=y
HELP WHATS THE VALUE OF X RLLY IMPORTANT
Answer:
The value of x is also 16 because It is saying that the angles ABC are the same as FGH. Therefore, the angles are the same, so the number is the same.
Step-by-step explanation:
Answer:
I think 16? I am not really sure but I learned this long ago and I think the value of X is 16. If this didn't help I am sorry :(
Step-by-step explanation:
Which description corresponds to the relationship shown in the table
Answer:
A
Step-by-step explanation:
earning $10 an hour because it increases by 40
Martin is helping his mom set up for a school event. His mom put 150 cups into a box. There are 40 red cups, 60 blue cups, and
50 green cups in the box. He randomly picks 90 cups from the box and sets them out on tables.
How many blue cups is he likely to have set out on tables?
Answer:
C. 36
There are 150 cups total, and 60 blue cups
[tex]150/60=0.4[/tex]
Multiply that by the number of cups he picked up
[tex]0.4*90=36[/tex]
I’ll give brainlest if you get it right if wrong no brainlest
Answer:
2. Isosceles triangle
3. Isosceles triangle
4. Isosceles triangle
5. Equilateral triangle
6. Scalene triangle or Isosceles triangle
Step-by-step explanation:
Answer:
2) Isosceles triangle
3) Scalene Triangle
4) Scalene Triangle
5) Equilateral Triangle
6) Isosceles triangle
Step-by-step explanation:
the image should help you
What shortcut could you use to prove the triangles congruent?
O HL
O SAS
O ASA
SSS
OSSA
CNBD
O AAS
Answer:
AAS
Step-by-step explanation:
You can see that two angles and one side are congruent.
A plot of land is in the shape of a triangle. Two of the angles measure 48 degrees and 74 degrees. The length of the side between them is 90 m.
a) calculate the perimeter of the plot, to the nearest meter.
b) calculate the area of the plot, to the nearest square meter.
Answer:
Perimeter = 271 meters
Step-by-step explanation:
third angle measure would have to be 180 - 122 = 58 degrees
you can use the law of sines:
sin 58° = sin 74°
90 b
.85 = .96
90 b
cross-multiply: .85b = 86.4
b = 102
now do again to find third side:
sin 58° = sin 48°
90 c
.85 = .74
90 c
.85c = 67
c = 79
now you know all 3 sides so add them to get perimeter (79+102+90) = 271
What is the midpoint of the line segment with the equation y=12x+3 between x=−4 and x=8?
(6,6)
(2,−2)
(2,4)
(2,2)
Answer:
2,4 ((((((((((((((((((((
Jerry started doing sit-ups every day. The first day he did 18 sit-ups. Every day after that he did 2 more sit-ups than he had done the previous day. Today Jerry did 28 sit-ups. Enter an equation that could be solved to find the number of days Jerry has been doing sit-ups, not counting the first day.
Answer:
14 days
Step-by-step explanation:
28/2
PLEASE PLEASE HELP, I AM TIMED! What is the equation to the function? Explain.
Step-by-step explanation:
General equation: y = 2 + c/(x - 1)
When x = 4, y = 4.
=> (4) = 2 + c/(4 - 1), c = 6.
Hence the equation is y = 2 + 6/(x - 1).
Please helppppp it’s due soon and I’m already failing my class!!!
Answer:
For an equation like:
y = a*x + b
a is the slope, and this is the rate of change of the function.
For the case of the problem, we know that the equation represents the amount of oxygen in the spaceship as a function of time. Where as the time passes, the quantity of oxygen decreases.
Then the slope is the rate of change that tells how the quantity of oxygen changes as time passes. Then the slope is the amount of oxygen that is consumed per unit of time.
is the relationship between the side length of a square and the area of a square proportional?
Answer:
Students make in-out tables to assist them in noticing patterns and generalizing the mathematical relationships. Expect students to discover that area increases proportionally to the square of how much the side length increases.)
1100 students attend Ridgewood Junior High School. 20% of students bring their lunch to school everyday. How many students brought their lunch to school on Thursday?
Answer:
20% of 1100 is 220, so two hundred and twenty students brought their lunch to school on Thursday (and every other school day).
Step-by-step explanation:
The day of the week is a distraction. All you need to know is that 20% of 1100 students bring their lunch to school every day. 20% of 1100 is 200 + 20, or 220. So 220 students bring their lunch to school every day.
Can someone tell me the answers? Like for example point A is 5,3) please help
Sure! Please give brainly if I'm correct, and thank you!
A= 5,3
B= 0,0
C= -9,-4
D= -10,4
E= 4,-8
F= 10,10
G= -4,0
H= 0,7
I= -6,-8
J= 9,-2
I NEED HELP ASAP!!!
Answer:
The first and second
Step-by-step explanation:
The first one is right 12/3=4
The second one is right 12*5=60
The third one is wrong 100-184=-84 not 84
If y=a sin 3x+ b cos 3x and [tex]\frac{d^{2} y }{dx^{2} }[/tex] = ky, then what is the value of k?
Someone pls asnwer, correct answer will be marked as the brainiest. No spam!!
Step-by-step explanation:
You have to do first and second derivatives :
y = a sin 3x + b cos 3x
dy/dx = 3a cos 3x - 3b sin 3x
d²y/dx² = - 9a sin 3x - 9b cos 3x
Next, you have to compare it :
let d²y/dx² = ky,
-9a sin 3x - 9b cos 3x = k(a sin 3x + b cos 3x)
-9(a sin 3x + b cos 3x) = k(a sin 3x + b cos 3x)
Therefore, k is equals to 9.
Given the statement "r varies jointly as s and t". if r =16 when s = 4 and t =6, what is the constant of the variation?
Mhanifa please answer this question about lines
Parlings vary directly with mots. If 7.5 mots are worth 37.5 parlings, how many parlings will get you 13 mots?
Answer:
65 parlingsStep-by-step explanation:
Use ratios:
7.5 mots / 37.5 parlings = 13 mots / x parlingsx = 13*37.5/7.5x = 65Please help this is a grade
Answer:
I don't see the answer to the problem
If x = 3 and y = 8 , evaluate the following expression: y − x
Answer:
5
Step-by-step explanation:
y-x
8-5 = 5
The value of the expression y - x is 5.
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
y - x
The value of y - x when x = 3 and y = 8.
= y - x
= 8 - 3
= 5
Thus,
The value of the expression is 5.
Learn more about expressions here:
https://brainly.com/question/3118662
#SPJ2
PLEASE HELP!! I've been trying to do this for the past 3 days and I still need help on this question
Answer:
C
Step-by-step explanation:
plz brainliestt
Answer: it is the 3 one i alredy did thes question if yhhou need more help ask me
Step-by-step explanation:
can someone help me with 26 and 27?
Answer:
B
Step-by-step explanation:
Can anyone help me please?
Answer:
A' (-6, 4)
B' (2, 2)
C' (-2, -2)
Step-by-step explanation:
Multiply each number by 2.
HELP ME ILL MARK YOU BRAINLIEST .....
EXPLAIN YOUR ANSWER PLEASE AND HOW YOU GOT IT..THE STEPS
Answer:
1. m<rsv is 42 degrees
2.
Step-by-step explanation:
1.
2. Since abc is 95, the two angles you have to solve are going to equal 95 when added because they make up the angle ABC so solving it would be like
(2x+23)+(9x-5)=95 you then solve this which would be
2x+23+9x-5 = 95 - Combine like terms
11x+18=95 Subtract 18 both sides
11x=77 divide by 11
x=7
After this you just put 7 in the equations instead of X and solve it
making angles
1.37x = 12.741
A.14.111
B.17.45517
C.9.3
D.11.371
hey! the answer to your question is b because 1.37x12.741 is the answer 17.45517
4
Drag each value and expression to the correct location on the equation. Not all values and expressions will be used.
A patch of farmland is currently worth $78,125. The expected increase in its market value can be modeled by the function below, where tis the
time in years.
P(t) = 78,125 0.025:
How many years will it take for the farmland's market value to reach $125,000?
6.4
In(1.6)
0.025
18.8
13.6
years
years
Reset
Next
Answer: t = 18.8 years
Step-by-step explanation: The modeled function is an exponential function:
[tex]P(t)=78,125e^{0.025t}[/tex]
which is farmland worth along time.
To determine when the farmland will be worth $125,000:
[tex]125,000=78,125e^{0.025t}[/tex]
[tex]e^{0.025t}=\frac{125,000}{78,125}[/tex]
[tex]e^{0.025t}=1.6[/tex]
Apply natural logarithm:
[tex]ln(e^{0.025t})=ln(1.6)[/tex]
And then, power rule:
[tex]0.025t=ln(1.6)[/tex]
[tex]t=\frac{ln(1.6)}{0.025}[/tex]
t ≈ [tex]\frac{0.47}{0.025}[/tex]
t ≈ 18.8
After 18.8 years, the farmland will reach market value of $125,000.
Answer:
Step-by-step explanation:
For all Plato users.
Guys i posted this question 100times plz answer i beg, thank you so much, plz show all the working
Answer:
x = 45.6
Step-by-step explanation:
NOTE: Please double-check my answer.
To find x, I used Sine Law.
[tex]\frac{x + 5}{sin65}[/tex] = [tex]\frac{x}{sin40}[/tex]
(x+5)sin40 = xsin65
xsin40+ 5sin40 = xsin65
xsin40 - xsin65 = -5sin40
x(sin40 - sin65) = -5sin40 (I factored out the "x")
x = [tex]\frac{-5sin40}{sin40 - sin65}[/tex]
x = [tex]\frac{-3.725565802}{0.74511316 - 0.826828679}[/tex]
x = 45.6
The temperature in one northern city was -12°F and in a southern city was 57°F. How much warmer
was the southern city than the northern city?
Answer
69°F
Because
12+57=69