Which is a counterexample for the conditional?
If a polygon has four right angles, then it is either a square or a rectangle.
Answers
Answer:
No because squares and rectangles are a type of polygon.
Step-by-step explanation:
A polygon is any shape with straight sides.
Polygon of having four right angles, then it is either a square or a rectangle.
What is polygon?A polygon is a closed object made of line segments rather than curves on a two-dimensional plane. Combining the terms poly, which means multiple, and gon, which means sides, creates the word polygon.
Given that,
A polygon has four right angles.
Since, A polygon of four right angles, then there will be four sides of polygon.
Four sides which are right angle can frame either a square or a rectangle.
A polygon is either a square or a rectangle.
This condition is true, because if all sides of polygon are equal then it will be a square and if all sides are not equal, then it will be a rectangle.
So, polygon with four right angles is either square or rectangle.
To know more about Polygon on:
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Related Questions
area of rhombus ROCK is ________ cm^2 if RC = 13 cm and OK = 24cm
Answers
Answer:
156 cm^2
Step-by-step explanation:
1/2 × 13 × 2413 × 12156Sam's Club has a special that charges $2.49 per case of water. Vinny wants to pay that price, but needs to purchase a membership first, which costs $50. If Vinny spent $67.43, which equation represents how many cases of water Vinny bought at Sam's club?
Answers
Answer: $50 + $2.49x = $67.43
Step-by-step explanation:
Let the case of water bought be represented by x.
We are informed that Sam's Club has a special that charges $2.49 per case of water and that Vinny wants to pay that price, but needs to purchase a membership first, which costs $50 and that Vinny eventually spent $67.43.
The equation that represents the number of cases of water that Vinny bought at Sam's club will be:
$50 + $2.49x = $67.43
A movie begins at 4:30pm and it is 1 hour 50 minutes. What time does it end?
Answers
Answer:
The movie ends at 6:20.
Step-by-step explanation:
4:30
+30
=5:00
+20
=5:20
+1:00
=6:20
Josh mowed ⅘ of a yard in ⅖ of an hour. How many yards can Josh mow in 1 hour?
Molly bought 5 pounds of apples for $7.95, how much did each pound cost.
Ella worked 22 hours and got paid 249.26. How much did she make an hour?
If Robin drove ⅔ of a mile in 1/12 of an hour, how far can she drive in 1 hour?
Answers
2. $1.59
3. $11.33
4. 8 miles
Solve the system of equations by the addition method
{6x + 4y = 18
{ 2x - 4y = -10
Answers
Answer: (1, 3)
Step-by-step explanation:
Answer:
6x+4y+2x-4y = 18+(-10)
8x = 8
x = 1
6x+4y = 18
6*1+4y = 18
4y = 18-6
4y = 12
4y/4=12/4
y= 3
When solving an ______, use inverse operations to undo the operations.
Answers
[tex][Hello,BrainlyUser][/tex]
║ Answer ║Equation
Step-by-step explanation:
Inverse operations are used to solve simple algebraic equations to more difficult equations that involve exponents, logarithms, trigonometry, etc
Thus, When solving an equation, use inverse operations to undo the operations.
[CloudBreeze]
Answer:
equation
Step-by-step explanation:
When solving an equation, use inverse operations to undo the operations.
The cost of hiring a trailer for t hours is C= 5t+10
draw the graph of C against t
Answers
Answer:
See below
Step-by-step explanation:
Given that
C = 5t + 10We can simply take t as 1,2, 3 and so on and put it in the above equation. After finding out C, we can plot the points accordingly.
OR
We can simply use a graphing calculator.
See the attached file!
10 points to whoever can answer this id give more but i only have 10. AVIS rent a car is running a deal where you can rent a car for $49.99 and $0.99 per mile. Using "m" for miles, write and expression that depicts this situation.
Answers
Answer:
.99m+49.99
Step-by-step explanation:
The slope is the value per mile, being .99. The constant is the value that remains the same, which in this situation is represented by the downpayment, being 49.99.
16/17 as a decimal rounded to the nearest hundredth
Answers
Answer:
the answer is 0.94
Step-by-step explanation:
16/17 = 0.941176470588
the hundreths place is where the 4 is, and to the right of the 4 is a one, if its under 5 then dont round up so your answer will remail 0.94.
hope this helps have a great day!
Any intelligent people want to tell me how the heck I do this
Answers
Answer:
I'm pretty sure you are supposed to add the exponents.
Step-by-step explanation:
A medical delivery services charges $10 for a house call plus $0.50 per mile. The situation is represented by the equation c=0.5m+10 where m represents the number of miles the delivery is from the office and c represents the cost of the delivery. Calculate the total cost of a medical service delivery if the number of miles driven is 75.5 miles. Write your answer as an ordered pair (m,c).
Answers
Answer:
$47.75
Step-by-step explanation:
Where are given that the cost of medical service delivery is given by the expression
c=0.5m+10
m= the number of miles
when the number of miles is 75.5 mile we want to find the cost
put m=75.5 in the expression
c=0.5(75.5)+10
solving for c we have
c=37.75+10
c=47.75
Therefore the cost will be $47.75 for a distance of 75.5miles
Chiara had $5,700 in medical expenses last year. Her medical insurance covered 80% of these expenses. The IRS allows medical and dental expenses deductions for the amount that exceeds 7.5% of a taxpayer’s adjusted gross income. If Chiara’s adjusted gross income is $35,432, how much can she claim as a medical deduction? Explain
Answers
Using proportions, it is found that she can claim amounts greater than $2657.4 as a medical deduction.
What is a proportion?A proportion is a fraction of a total amount.
In this problem, her adjusted gross income is $35,432, and she can claim deductions for amount's that exceed 7.5% of this, hence:
0.075 x 35,432 = $2657.4.
She can claim amounts greater than $2657.4 as a medical deduction.
More can be learned about proportions at https://brainly.com/question/24372153
Solve the system: 2x – 6y + 4z = 3
-3x + 9y – 6z = -3
5x – 15y + 10z = 5
Answers
Answer:
7
Step-by-step explanation:
i hope this is right, I did the math
Is Y=5 and Y=-1 consider parallel perpendicular or neither show your work
Answers
Answer:
They are parallel.
hope i helped! (put graph down below)
Step-by-step explanation:
At batting practice tj had 20 baseballs pitched to him. He hit the ball 17 times
Answers
Answer:
340
Step-by-step explanation:
Its a simple multiplication problem you just have to multiply 20 x 17 = 340
Hope this helps! :)
Two equations are graphed above. What is the solution? Please help!
Answers
Answer:
no solution.
Step-by-step explanation:
Lines are parallel ,so they do not cut at any point.Hence no solution.
In what ratio is the line joining the points.
(-1,8) and (5,2) divided by the point (3,4)
Answers
Answer:
2:1
Step-by-step explanation:
use k:1 as ratio, and then apply the section formula.
let's use the x co-ordinate pf the point in between the other two which is=(3)
section formula says,
x=mx2 + nx1/(m+n)
m=k , n=1
substitute all the values,
3=5k+(-1)/(k+1)
take k+1 to left side,
3(k+1)=5k-1
3k+3=5k-1
5k-3k=3+1
2k=4
(÷2)
k=2
hence, the ratio = 2:1
Which graph represents the inequality 3y−5x>−6?
Answers
Answer:Top Left
Step-by-step explanation:
Graph A represents the given inequality 3y−5x>−6. Option A is correct.
From the graphs, the graph is to choose which best describes the inequality 3y−5x>−6
What is inequality?Inequality can be defined as the relation of an equation containing the symbol of ( ≤, ≥, <, >) instead of the equal sign in an equation.
Given inequality,
3y−5x>−6.
Since the inequality contains only greater than sign, so options B and C will be omitted because both the graphs show boundary conditions that are wrong for the given inequality.
Now, graph A and D show now boundary condition and shaded portions
3y−5x>−6
Since the inequality is shown greater than -6 so the inequality will start from a negative y toward the positive y i.e.
3y−5x > −6
3y > 5x - 6
y > (5x - 6)/3
The above expression shows the value of y lies above the line y =5x/3-2 which implies graph A is correct.
Thus, Graph A represents the given inequality 3y−5x>−6. Option A is correct.
Learn more about inequality here:
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PLEASE ANSWER Solve for x. Round to the nearest tenth, if necessary.
Answers
Answer:
above is the solution to the question
PLEASE HELP
Select the correct answer.
Simplify the expression.
3.1 648x478
OA. 18.12y2 2,42
Ов. 18х2у2 /3xy 2
OC. 188723x2y2
OD. 9x2y/2x42
Answers
14 gallons of gas is $19.46. how much would it cost to get 9.5 gallons
Answers
Answer:
13.205
Step-by-step explanation:
19.46 divided by 14
= 1.39
Multiply 1.39 with gallons given:
=(9.5)(1.39)
= 13.205
Therefore, it would cost $13.21 to get 9.5 gallons of gas.
How many natural numbers between 100 and 500 have a hundreds digit that is a 3 and a ones digit that is a 5?
Answers
Answer:
10
Step-by-step explanation:
Two of the three digits of the 3-digit number have been specified. The remaining digit may take on any of 10 values. There are 10 such numbers.
305, 315, 325, 335, 345
355, 365, 375, 385, 395
3) In September the ratio of the number of kids playing sports to those not playing sports after
school was 3:6. In April the ratio was 5 kids playing sports to 4 kids not playing sports. If there
are 36 kids playing sports in September, how many kids are not playing sports in April?
Answers
Answer:
Step-by-step explanation:
My guess is that 10/36 students weren't playing sports.
good evening! Can someone please answer this, ill give you brainliest and your earning 50 points. Would be very appreciated.
Answers
Answer:
Less Than
Step-by-step explanation:
Given;
The equation of one exponential function is
[tex]g(x)=-9(0.1)^x[/tex]
Solve for (y-intercept of g(x))
⇒ [tex]g(x) = -9(0.1)^x[/tex]
⇒ [tex]y = -9(0.1)^0[/tex]
⇒ [tex]y = -9[/tex]
Note;
The y-intercept is when x = 0
y-intercept of h(x) = 6
Hence, knowing that -9 < 6.
Thus, y-intercept of g(x) is less than the y-intercept of h(x).
~Learn with lenvy~
Answer:
less than
Step-by-step explanation:
The y-intercept is when x = 0
Function g(x)
[tex]g(x)=-9(0.1)^x[/tex]
Input x = 0 into the equation and solve:
[tex]\implies g(0)=-9(0.1)^0=-9[/tex]
Therefore, the y-intercept of g(x) is (0, -9)
Function h(x)
From inspection of the table, the y-intercept of h(x) is (0, 6)
As -9 < 6, the y-coordinate of the y-intercept of g(x) is less than the y-coordinate of the y-intercept of h(x)
Write an equation for the description
The length of a rectangle is twice its width. The perimeter of the rectangle is 131 feet.
_____=_____
Answers
Answer:
[tex]131=6w[/tex]
Step-by-step explanation:
[tex]l=length\\\\w=width\\\\\Longrightarrow l=2w\\\\\Rightarrow Perimeter=l+l+w+w\\\\P=2l+2w\\\\P=2(2w)+2w\\\\P=4w+2w\\\\P=6w\\\\P=131\\\\131=6w\\\\w=\frac{131}{6}\\\\w=21.8\overline{3}\\\\l=43.\overline{6}[/tex]
Answer:
A) l = 2 * w
B) 131 = 2l + 2w
B) 2l = 131 -2w
B) l = 65.5 -w
Substituting this into A)
65.5 -w = 2w
3w = 65.5
width = 21.8333333333
length = 43.6666666666
Double - Check
131 = 2 * 21.833333333 + 2 * 43.6666666666
131 = 43.6666666 + 87.33333333
131 = 131
Step-by-step explanation:
solve for x
your answer must be simplified
2x<15
Answers
Answer:
7.5
Step-by-step explanation:
2 / 2 = 0 & 15 / 2 = 7.5
x = 7.5
100 POINTS!!!
What makes a function linear?
A. Having a constant average rate of change.
B. Having a negative average rate of change.
C. Having no repeating inputs.
D. Having a positive average rate of change.
EXPLAIN
Answers
Answer:
Linear functions are those whose graph is a straight line. A linear function has one independent variable and one dependent variable. The independent variable is x and the dependent variable is y. a is the constant term or the y intercept.
Step-by-step explanation:
if ABC undergoes a dilation of scale factor 3 centered at the origin, what will be the coordinates of the image of point B?
A- ( 6, 3 ) ?
B- ( 2, 9 ) ?
C- ( 5, 6 ) ?
D- ( 6, 9 ) ?
And why ..?
Please help! I’ll give Brainliest to the first person who answers.
Answers
Answer:
Step-by-step explanation:
(5,6)
are 15/28 and 45/84 equivalent
Answers
Answer:
yes
Step-by-step explanation:
(45/84) /3 = 15/28
Find the coordinates of the midpoint of the segment joining the given points. (-2, 2) and (6, 4)
Answers
Answer:
Step-by-step explanation:
(4/2) (6/2)
(2) (3)
(2,3)