Answer:
None
Step-by-step explanation:
Its not associative since your not switching around parenthesis, and it can't be commutative since numbers aren't being switched around with an equal sign.
PLEASE HELP ME WITH THIS QUESTION!!
Answer: Never produce a rational numbers
Step-by-step explanation: IT doesnt matter if integers are added, subtracted, multiplied, or divided, intergers will always be integers.
-2x + 2y = 2 4x –4y= 4A.No solutionB.One solution: x = _____ y = ___C.Infinitely many solutionsBONUS: A customer at a concession stand bought 2 boxes of popcorn and 3 drinks for $12. Another customerbought 3 boxes of popcorn and 5 drinks for $19. How much does a box of popcorn cost? _____________How much does a drink cost?__________________
Answer:
See answers below
Step-by-step explanation:
1) Given the simultaneous equation;
-2x + 2y = 2 .... 1 * 2
4x –4y= 4...2 * 1
____________
-4x + 4y = 4 .... 1
4x –4y= 4...2
Add both equations
4y-4y = 4-4
0y = 0
y = 0/0
Let x = k
Substitute x = k into 1
From 1: -2x + 2y = 2
-x+y = 1
-k + y = 1
y = 1+k
Hence the solution to the system of equation (x, y) is (k, 1 + k) where k is any integer.
The presence of k shows that the equation has many solutions since k can take any value
2) Let a box of popcorn be x
Let the cost of a drink be y
If a customer at a concession stand bought 2 boxes of popcorn and 3 drinks for $12, then;
2x + 3y = 12 ... 1
Also, if another customer bought 3 boxes of popcorn and 5 drinks for $19, then;
3x + 5y = 19 ...2
Solve 1 and 2 simultaneously
2x + 3y = 12 ... 1 * 3
3x + 5y = 19 ...2 * 2
_________________
6x + 9y = 36
6x + 10y = 38
Subtract
9y - 10y = 36 - 38
-y = -2
y = 2
Recall that 2x + 3y = 12
2x + 3(2) = 12
2x + 6 = 12
2x = 12-6
2x = 6
x = 6/2
x= 3
Hence a box of popcorn cost $3 and a drink cost $2
If a new soccer ball is labeled $45, what would the new price be if the sign above it says "63% off"?
Answer:
New price of the ball after discount = $16.65
Step-by-step explanation:
Selling price of the soccer ball = $45
Discount labeled on the ball = 63% off
Therefore, selling price after the discount = Original selling price - %discount
= $45 - (63% of $45)
= $45 - $28.35
= $16.65
New price of the ball after discount = $16.65
There are seven nickels and seven dimes in your pocket. You randomly pick a coin out of your pocket and place it on a counter.
Answer:
3/13
Step-by-step explanation:
Here is the full question
There are seven nickels and seven dimes in your pocket. You randomly pick a coin out of your pocket and place it on a counter. Then you randomly pick another coin. Find the probability that both coins are nickels.
Because there is no replacement, after you pick the first coin, the number of coins in your pocket becomes 13 and the number of nickels in your pocket becomes 6
probability that both coins are nickels = probability that the first coin is a nickel x probability second coin is a nickel
7/14 x 6/13 = 3/13
there are 2 numbers that are twice as far from 23 as they are from 38. Those two numbers are? QUICKK PLS
Answer:
53&8
Step-by-step explanation:
38-23=15
23+15+15=53
23-15=8
What is the value of x?
Answer:
The value of x=27
Step-by-step explanation:
This is for algebra 1
Answer:
h(2)= -17
Step-by-step explanation:
Answer:
h(x) = 31
Step-by-step explanation:
When it says find h (2), you will have to replace x with 2
h(x) = 3x^2 -5
h(x) = 3(2)^2 -5
h(x) = 6^2 - 5
h(x) = 36 - 5
h(x) = 31
Hope this helps =)
x2 - x - 72
Factor the time
Answer:
i dont know
Step-by-step explanation:
Answer:
(x - 9)(x + 8)
I have a math problem can uou solve it?
does anyone know the answers
If the diameter of brenda's bicycle wheel is 26 inches,Approximately how many inches are there in the circumference of the wheel ?
Answer:
81.692in
Step-by-step explanation:
Given data
Diameter =26in
Radius = 12in
The expression for the circumference is given as
Circumference = 2πr
Substitute
C=2*3.142*13
C=81.692in
Hence the circumference is 81.692in
Please help will give brainliest
At a local aquarium there is a large cylinder shaped fish tank. The fish tank has a diameter of 8 feet and a height of h feet. Which equation can be used to find V, the volume of the cylinder of cylinder in cubic feet? 8.6.A *
V = π(8)²h
V = π(4)²h
V = π(4h)²
V = π(8h)²
Answer:
(A) V = π(8)²h
what's
[tex] \sqrt{144 \times 4} [/tex]
Answer:
24
Step-by-step explanation:
[tex]\sqrt{144*4}\\\\ \sqrt{576}\\\\ \sqrt{24^2}\\\\\boxed{24}[/tex]
Hope this helps!
Answer:
24 Ans ...
Step-by-step explanation:
Data:
=√144 x 4
Solution:
=√576
=24 Ans ...
pls help me it's due today
Answer:
r³ + 15r² - 10r - 4
Step-by-step explanation:
First, note you can remove the brackets, in this case they contribute nothing at all.
Then, group the like terms and add them, e.g., we have 3r³ and -2r², they add up to r³.
Finally, order them from greatest power of r to smallest power of r.
That's all!
Find the measure of the missing angle *
Answer:
≈ 49.9° and ≈ 71.0°
Step-by-step explanation:
Using the sine ratio in the right triangle
sin? = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{13}{17}[/tex] , then
? = [tex]sin^{-1}[/tex] ([tex]\frac{13}{17}[/tex] ) ≈ 49.9° ( to the nearest tenth )
----------------------------------------------------------------
Using the cosine ratio in the right triangle
cos? = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{14}{43}[/tex] , then
? = [tex]cos^{-1}[/tex] ([tex]\frac{14}{43}[/tex] ) ≈ 71.0° ( to the nearest tenth )
Solve the system by substitution.
y = -6x
- 2x - y = 16
Answer:
X=4 and Y= -24
Step-by-step explanation:
Step 1: −6x for y in−2x−y=16:
−2x−y=16
−2x−−6x=16
4x=16
4x/4=16/4
x=4
----------------------------------------------------------------------
y=−6x
y=(−6)(4)
y=−24
y=-24
Solve for (3x-7b)+(2b+2x)=12b
Answer:
solve for x: x = 17b/ 5
Solve for b: B= 5x/ 17
hope this helps :)
A car travels 320 miles in four hours. how far can a car travel in 60
Answer:
A car can travel 4800 miles in 60 hours
Step-by-step explanation:
Answer:
4800
Step-by-step explanation:
if the car drives 320 in 4 hours that means it travels 80 miles for 2 hour. multiply 80 by 60 and get 4800
Briooooo wat is dis answer I need HELP
Answer:
Mehmed II
Step-by-step explanation:
Answer:
the second one
Step-by-step explanation:
Simplify. (4n^2−5n+6)+(2n^2−3n−4)
6n^2+2n−2
6n^2−8n+2
6n^2+8n+10
6n^4−8n^2+2
Answer:
6n^2-8n+2
Step-by-step explanation:
(4n^2-5n+6)+(2n^2-3n-4)
4n^2+2n^2-5n-3n+6-4
6n^2-8n+2
Answer:
6n^2-8n+2
Step-by-step explanation:
cuz I’m smart
If 6c-d=17, then d=
Answer:d=7
Step-by-step explanation:
Easy math
which is the better buy 5 erasers for $3.00 or 7 erasers for $3.50
Answer:
5 erasers for $3.00 is a good price and a good amount of erasers to get but if you get 7 of em' for $3.50 then you will have more but it depends on how much money you have if you have the limited about of only $3.00 then you should get the 5 erasers hope this helps. Have a wonderful day!!
Step-by-step explanation:
Which section of the graph is decreasing?
Answer:
I would go with answer B
Step-by-step explanation:
The starting of the decreasing is B and slowly decreases down to C
PLEASE HELP!! URGENT!! Rubi tosses a quarter off the Main Street bridge into the St. John's River. The distance, in feet, the quarter is above the water is modeled by the equation -16t^2+96t+112d ( t ) = − 16 t 2 + 96 t + 112, where t represents time in seconds. How much time does it take for the quarter to hit the water?
Answer:
5
Step-by-step explanation:
Pls need help thank you
Answer:
∠POM and ∠POR
Step-by-step explanation:
Step-by-step explanation:
angle POM and angle QRT
If measures of two diagonals are given then we can construct a?a. rhombus b .rectangle c. kite d. parallelogram
Answer:
212121
Step-by-step explanation:
21121212
The measures of the exterior angles of an octagon are x°, 2x°, 4xº, 5x°, 6x°, 8xº,
9x", and 10x°. Find the measure of the smallest exterior angle.
Answer:
8°
Step-by-step explanation:
The sum of the measures of the exterior angles of a any polygon = 360.
So, x + 2x + 4x + 5x + 6x + 8x + 9x + 10x = 360
45x = 360
x = 8°
The measure of the smallest exterior angle would be equal to 8°
What is Octagon ?In geometry, a Octagon is a eight - sided polygon. For a [n] sided polygon -
Sum of interior angles = (n - 2) × 180°Each interior angle of a regular polygon = [(n − 2) × 180°/n]Sum of exterior angles = 360°According to the question, we have - A Octagon and the measures of the exterior angles of an octagon are x°, 2x°, 4x°, 5x°, 6x°, 8x°, 9x° and 10x°.
The sum of the exterior angles of the octagon will be 360°.
Therefore, we can write -
x + 2x + 4x + 5x + 6x + 8x + 9x + 10x = 360°
45x = 360°
x = 360/45
x = 8
The smallest exterior angle would be equal to [x]° = 8°
Therefore, the measure of the smallest exterior angle would be equal to 8°
To solve more questions on Polygons, visit the link below -
brainly.com/question/11095766
#SPJ2
ms tyc does yoga. she worked out a total of 255.5 minutes last week.she exercised 7 days.how many minutes does she exercise each day?
Answer:
36.5
Step-by-step explanation:
255.5/7 = 36.5
Solve for x. (Round to the nearest tenth)
Answer:
c = 30:2 = 15
x =
[tex] \sqrt{15 {}^{2} } + 33 {}^{2} [/tex]
(its all under square root)
so x = 36,25.. mate it could be wrong on there
Find the coordinates of the circumcenter of the triangle with the vertices A (4, 12), B (14, 6), and C (-6, 2)
Answer:
Step-by-step explanation:
Determine the perpendicular bisector of AB:
Slope of AB = (12-6)/(4-14) = -0.6
Midpoint of AB: ((4+14)/2, (12+6)/2) = (9, 9)
Perpendicular bisector: y = -0.6x + 14.4
Determine the perpendicular bisector of AC:
Slope of AC = (12-2)/(4+6) = 1
Midpoint of AC: ((4-6)/2, (12+2)/2) = (-1, 7)
Perpendicular bisector: y = x + 8
Circumcenter is the intersection of the perpendicular bisectors.
x + 8 = -0.6x + 14.4
1.6x = 6.4
x = 4
y = x + 8 = 12
(4,12)