Answers
Answer:
D
Step-by-step explanation:
The pentagon has 5 interior angles that add up to 360. To find the angle of rotational symmetry, divide 360 by 5 (you get 72). So if you rotated the shape 72 degrees, it will map onto itself. 72 times 2 is 144, and that's rotating the shape 72 degrees twice, so it will stay the same.
A mathematical transformation that carries a pentagon onto itself is a rotation by 72 degrees or a multiple of 72 degrees, which are the internal angles of a regular pentagon.
Explanation:The question is referring to certain mathematical transformations that can be applied to shapes, specifically a pentagon. A transformation that will carry a shape onto itself, maintaining its form, is a symmetry operation. For a pentagon, one of these transformations could be a rotation. For example, if you rotate the pentagon 72 degrees or a multiple of 72 degrees (such as 144, 216, 288 degrees, etc.), it will land on itself because 72 degrees represents each internal angle of a regular pentagon.
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Related Questions
Is (0,0) a solution to this system?
y ≤ x^2 - 4
y > 2x - 1
A. No. (0,0) satisfies y ≤ x^2- 4 but does not satisfy y > 2x - 1.
B. No. (0,0) satisfies y > 2x - 1 but does not satisfy y ≤ x^2 - 4.
C. Yes. (0,0) satisfies both inequalities.
D. No. (0,0) does not satisfy either inequality.
Answers
Answer:
option-B
Step-by-step explanation:
we are given system of inequality as
[tex]y\leq x^2-4[/tex]
[tex]y>2x-1[/tex]
now, we can check solution
At (0,0):
we can plug x=0 and y=0
and check inequality
[tex]0\leq 0^2-4[/tex]
[tex]0\leq -4[/tex]
so, this is FALSE
now, we can check second inequality
[tex]0>2\times 0-1[/tex]
[tex]0>-1[/tex]
So, this is TRUE
so, option-B
Answer: Hello mate!
we want to know if the pair (0,0) is a solution for the system, where the usual notation for a pair is (x,y), and the system is:
y ≤ x^2 - 4
y > 2x - 1
The first step is replacing the numbers in the system by the numbers in the pair, and look if the pair is a solution or not.
the first inequality gets:
y ≤ x^2 - 4
0 ≤ 0^2 - 4
0 ≤ - 4
This is false, so (0,0) is not a solution for this inequality.
Now let's see the second one:
y > 2x - 1
0 > 2*0 - 1
0 > -1
This is true, then the pair (0,0) is a solution for this inequality.
then the answer is the option B, the pair (0,0) is not a solution for the system, satisfies y > 2x - 1 but does not satisfy y ≤ x^2 - 4.
Lee needed to make Drapes the length from the floor to the top of the window the wall beneath the window had the height of 2 2/3 feet and the height of just the window measured 2 3/4 feet how long do the Drapes have to be
Answers
Answer: 5 feet 5 inches
Step-by-step explanation:
2 2/3 + 2 3/4 is equal to 5 5/12 so the drapes will be 5 5/12 feet long (or 5 feet 5 inches)
Answer:
The length of the drapes have to be [tex]5\frac{5}{12}\ ft[/tex]
Step-by-step explanation:
Given : Lee needed to make Drapes the length from the floor to the top of the window the wall beneath the window had the height of [tex]2\frac{2}{3}[/tex] feet and the height of just the window measured [tex]2\frac{3}{4}[/tex] feet.
To find : How long do the Drapes have to be?
Solution :
The height of the wall beneath the window is [tex]2\frac{2}{3}=\frac{8}{3}\ ft[/tex]
The height of the window is [tex]2\frac{3}{4}=\frac{11}{4}\ ft[/tex]
The total height from the floor to the top of the window is
[tex]H=\frac{8}{3}+\frac{11}{4}[/tex]
[tex]H=\frac{32+33}{12}[/tex]
[tex]H=\frac{65}{12}[/tex]
[tex]H=5\frac{5}{12}\ ft[/tex]
Therefore, The length of the drapes have to be [tex]5\frac{5}{12}\ ft[/tex]
Angeline bought s yards of satin fabric priced at $8.09 per yard, and c yards of cotton fabric priced at $3.79 per yard. What expression could you use to determine the total cost of the fabric? If she bought 5 yards of satin fabric and 8 yards of cotton fabric, how much did Angeline spend in all?
Answers
Answer: 11.88
Step-by-step explanation: First You Add 8.09 then you add 3.79 Therefore your answer is 11.88
Hope This Helps You Ace Your Test
Answer:
$70.77
Step-by-step explanation:
Let represents the total cost. We know for our problem that each yard of satin fabric costs $8.09, so yards will cost . similarly, each yard of cotton fabric costs $3.79, so yards will cost . We can also infer that the total cost, , will be the sum of the yards of satin fabric and the yards of cotton fabric, so:
Now, to determine the amount that Angeline would spend in all if she bought 5 yards of satin fabric and 8 yards of cotton fabric, we just need to replace and in our expression:
We can conclude that if Angeline would spend in all if she bought 5 yards of satin fabric and 8 yards of cotton fabric, she would spend $70.77
Can anyone walk me through this?
Answers
Answer:
n = - 6
Step-by-step explanation:
divide both sides by 2
n + 5 = - 1 ( subtract 5 from both sides )
n = - 6
OR
distribute the parenthesis by the 2 outside
2n + 10 = - 2 ( subtract 10 from both sides )
2n = - 12 ( divide both sides by 2 )
n = - 6
Please help! I'm geting the wrong answer and i don't know why
8(x + 1) - 3(x + 4) = 7(2 - x)
Answers
Kate uses 2 packets of milk powder per day how many days will 1/3 of a packet of milk powder last.
Answers
To find out how many days 1/3 of a packet of milk powder will last, divide 1/3 by 2 to get 1/6 of a day.
Explanation:To find out how many days 1/3 of a packet of milk powder will last, we can use the information given. Kate uses 2 packets of milk powder per day. This means in one day, she uses 2 packets. So, in order to calculate how many days 1/3 of a packet will last, we need to divide 1/3 by 2. This gives us 1/6.
Therefore, 1/3 of a packet will last 1/6 of a day.
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1/3 of a packet of milk powder will last 1/6 of a day, or 4 hours, for Kate who uses 2 packets of milk powder per day.
If Kate uses 2 packets of milk powder per day, to determine how many days 1/3 of a packet of milk powder will last, you can perform a simple division. Since she uses 2 packets per day, you would divide the amount she has, 1/3 of a packet, by her daily usage, which is 2 packets. Therefore:
1/3 packets / (2 packets/day) = (1/3) / 2 days = 1/6 days
Thus, 1/3 of a packet of milk powder would last for 1/6 of a day. To determine the number of hours this represents, you can multiply 1/6 of a day by the number of hours in a day:
(1/6 day) times (24 hours/day) = 4 hours
Therefore, 1/3 of a packet of milk powder will last for 4 hours based on her current usage.
ASAP
It is worked out that 3 ladles full of soup each will feed 150 people.
The customers have complained in the past that the portions are too small.
The cook decides to give 5 ladles full of soup to each person.
How many people can now be fed soup?
I only have one shot at this question and the answer is not 800
Answers
Answer: 90 people
Step-by-step explanation:
3 ladles per person = 150 people x 3
= 450 ladles full
450 ladles full = 5 ladles per one person = 450/5 = 90 people
which of the following shows the algebraic solution and the graphical solution of the inequality 6d - 7 > 11
Answers
[tex]6d-7>11[/tex] add 7 to both sides
[tex]6d>18[/tex] divide both sides by 6
[tex]d>3[/tex]
How do I use elimination for the equations-x+5y=20 and 12y= 2x+ 60?
Answers
[tex]\left\{\begin{array}{ccc}-x+5y=20\\12y=2x+60&\text{subtract 2x from both sides}\end{array}\right\\\left\{\begin{array}{ccc}-x+5y=20\\-2x+12y=60&\text{divide both sides by (-2)}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}-x+5y=20\\x-6y=-30\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad\qquad-y=-10\to\boxed{y=10}\\\\\text{Put the value of y to the second equation:}\\\\x-6(10)=-30\\x-60=-30\qquad\text{add 60 to both sides}\\\boxed{x=30}\\\\Answer:\ \boxed{x=30\ and\ y=10\to(30,\ 10)}[/tex]
Negative six to the second power times negative six to the fifth power
Answers
Answer:
Step-by-step explanation:
The awnser is -279936
Answer:
6^7 = 279936
Step-by-step explanation:
(-6) ^ 2 * (6) ^5
We can take the negative outside
(-1) ^2 (6)^2 (6)^5
When the base is the same, we can add the exponents
(-1)^2 * 6^ (2+5)
(-1)^2 6^7
Negative 1 squared is (-1)*(-1) = 1
6^7
279936
Solve using substitution
y=3x-5
2x+5y=-42
Answers
Answer:
Solution point is (-1,-9)
Step-by-step explanation:
Put the value of y in the first equation into the second equation.
2x + 5(3x - 5) = - 42 Remove the brackets on the left2x + 15x - 25 = - 42 Combine like terms on the left17x - 25 = - 42 Add 25 to both sides17x - 25 + 25 = - 42 + 25 Do the addition17x = - 17 Divide by 1717x/17 = -17/17 Do the divisionx = - 1=======
Solve for y
y = 3x - 6x = -1y = 3(-1) - 6y = -3 - 6y = - 9What is the slope of y = (2/3)x?
Answers
Answer:
slope = [tex]\frac{2}{3}[/tex]
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y-intercept )
y = [tex]\frac{2}{3}[/tex] x is in this form
with slope m = [tex]\frac{2}{3}[/tex] and c = 0
Jason combined 1 1/4 ounces of strawberry preserve from a jar with 7/8 of an ounce of strawberry preserve as a part of individual dessert bowls.
Jason plans on using 1/5 of an ounce of strawberry preserve in each dessert bowl. How many dessert bowls can he completely fill?
Answers
Answer: 10 dessert bowls.
Step-by-step explanation:
To solve this problem you must apply the proccedure shown below:
1. Rewrite 1 1/4 ounces as a fraction:
[tex](4+1)/4=\frac{5}{4}[/tex]
2. You must add 5/4 ounces of strawberry preserve and 7/8 ounce of strawberry preserve, as following:
[tex]\frac{5}{4}ounces+\frac{7}{8}ounces=\frac{17}{8}ounces[/tex]
3. Now you must divide the result obtained by 1/5:
[tex]\frac{17}{8}[/tex]÷[tex]\frac{1}{5}=10.62[/tex]
4. Therefore, you can conclude that 10 dessert bowls can be completely fill.
first to answer will be the brainliest
Answers
Answer:
y =5x
Step-by-step explanation:
k = y/x is the ratio for proportional relationships
k = 10/2
k = 5
Rewriting this equation
y= kx
y =5x
Answer: y=5x
Step-by-step explanation:
2x5=10
4x5=20
if the correlation coefficient is 0.96, how confident can you be that your predicted value for the cost of a call at 70 minutes is close to the exact value for the cost of a call at 70 minutes?
Pick one of the options below and explain your answer?
Very confident
Somewhat confident
Not confident
Answers
Answer:
Very confident
Step-by-step explanation:
The closer the correlation coefficient is to 1, the stronger the correlation. Anything above .4 is relatively strong. So I would be very confident.
Transformation that produces an image that is the same shape but different size?
Answers
Answer:
Transformation that produces an image that is the same shape but different size is known as Dilation.
Step-by-step explanation:
There are many types of translations.
1. Rotation
2. Reflection
3. Translation
4. Dilation
We know that rotation, reflection and translation are rigid transformation. It means these transformation can not effect the size of the preimage.
Dilation represents the enlargement and compression of the figure according to the scale factor k.
If |k|>1, then it represent enlargement and if |k|<1, then it represent compression.
Therefore the transformation that produces an image that is the same shape but different size is known as Dilation.
Problem Page
Suppose we want to choose
2 letters, without replacement, from the
4 letters A, B, C, and D.
Answers
If order matters, then there are 12 ways to do this
If order does not matter, then there are 6 ways to do this
===========================================
We have 4 choices for the first slot and 3 choices for the next (we can't reuse a letter) so that's where 4*3 = 12 comes from
If order doesn't matter, then something like AB is the same as BA. So we are doubly counting each possible combo. To fix this, we divide by 2: 12/2 = 6
To be more formal, you can use nPr and nCr to get 12 and 6 respectively (use n = 4 and r = 2)
In combinatorics, you can choose 2 letters from 4 (A, B, C, D) without replacement in 6 ways, according to the 'combination' principle in probability.
Explanation:The subject of this question is combinatorics, a topic in Mathematics, particularly probability. You are asked to choose 2 letters without replacement from a set of 4 different letters {A, B, C, D}. To do this, we can use the formula for combinations, which is denoted as nCr, where n is the total number and r is the number being chosen. In this case, we can see it as 4C2.
To execute this, the formula is ‘n! / [r!(n-r)!]’ where '!' denotes factorial, meaning you multiply all natural number up to that number. Hence, 4C2 = 4! / [2!(4-2)!]. Factorial 4 (4!) = 4 * 3 * 2 *1 = 24. Factorial 2 (2!) is simply 2 * 1 = 2. Thus the calculation becomes 24 / [2*(2!)], simplifying to 24 / 4 which equals 6. So, there are 6 ways to choose 2 letters from 4 without replacement.
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I need help answering this please
Answers
Answer: Choice D) ordered pair is not a solution to the second equation
We can see this by replacing x and y with 1 and -4 respectively
2x + y = 4
2*1 + y = 4 .... replace x with 1
2*1 + (-4) = 4 ... replace y with -4
2 - 4 = 4
-2 = 4 .... this equation is false because -2 and 4 are different values
The last equation being false means that the original equation 2x+y = 4 is also false when (x,y) = (1,-4). Therefore, this ordered pair is not a solution to the second equation 2x+y = 4
A solution to the system must make BOTH equations true simultaneously, not just one.
Answer:
D
Step-by-step explanation:
2x + y = 4
If you substitute x = 1, and y = -4, then
2(1) - 4 = 2 - 4 = -2 not 4
Paul took 42 mile bicycle trip. he bicycle 1 1/2 hours in the morning and two hours in the afternoon what is his average speed in miles per hour
Answers
Answer:
Paul's average speed for his bicycle trip is 12 miles/hour.
Step-by-step explanation:
Since Paul rode a total of 42 miles, we need to add up the total time it took him to complete all 42 miles. Since her rode 1.5 hours in the morning and another 2 hours in the afternoon, he rode a total of 3.5 hours. Speed is calculated by dividing distance by time. Since his total distance is 42 and his total time is 3.5, we divide 42 by 3.5 to get 12. Since our calculations included miles and hours, then our final answer would be 12 miles per hour.
Patrick saved $500. He received 25% of the money for his birthday, saved 30% of the remainder for his allowance, and earned the rest of it by mowing laws. How much of his savings did he earn by mowing laws?
Answers
Answer:
Patrick earned $262.50 by mowing lawns
Step-by-step explanation:
500*0.75=375
375*.7=262.5
Answer:
$262.50
Step-by-step explanation:
It is a poorly worded question.
25 Percent of the 500 was from his birthday money.
500 * .25 = 125
That leaves 500-125 = 375
He saved 30 % of the 375 from his allowance
375 * .3 =112.50
375-112.50 =262.50
The rest is from mowing lawns.
Student A completed an equation with variables on both sides. Did the student correctly solve the following equation? Describe and correct the error in solving the equation below. 5c−6=4−3c 2c−6=4 2c=10 c=5 NEED HELP ASAP !!!
Answers
Answer: Student A did not correctly solve the equation because they subtracted 3c to 5c instead of added.
the difference of 3ab and 7bc
Answers
The mathematical expression for the given phrase "the difference of 3ab and 7bc" is 3ab - 7bc
Translating the phrase into a mathematical expressionTo translate the phrase "the difference of 3ab and 7bc" into a mathematical expression, we can use the subtraction operation, which is denoted by the "-" symbol.
The difference between two terms is the result of subtracting one term from the other. In this case, we have two terms: 3ab and 7bc. To find the difference between them, we need to subtract one from the other.
The phrase "the difference of 3ab and 7bc" can be written mathematically as: 3ab - 7bc
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There are 20% more goblins thank wizards in the magic club. There are 120 goblins in magic club. How many wizards are in magic club?
Answers
Answer:
There are 10 wizards in the magic club.
Step-by-step explanation:
if 6/5 (or 20% more) is how many goblins in comparison to wizards, there are 120/6 or 20=1/5. 5/5 is how many wizards there are so: 5*20=100 wizards
Simplify 2(a+5)−3(5a−4)
Answers
Answer:
[tex]-13a+22[/tex]
Step-by-step explanation:
we have
[tex]2(a+5)-3(5a-4)[/tex]
step 1
Apply the distributive property both terms
[tex]2a+2(5)-3(5a)+3(4)[/tex]
[tex]2a+10-15a+12[/tex]
step 2
Combine like terms
[tex](2a-15a)+(10+12)[/tex]
[tex](-13a)+(22)[/tex]
[tex]-13a+22[/tex]
rectangle r was dilated to form rectangle r what is the scale factor for the dilation
Answers
Answer: The scale factor of the dilation is C. 5/2
Step-by-step explanation:
Give the required elements of the hyperbola. 4x^2 - y^2= 16 The value of b is:
Answers
Answer:
a = 2
b = 4
Step-by-step explanation:
4x² - y² = 16
General equation for a horizontal hyperbola:
(x-h)²/a² - (y-k)²/b² = 1
with center (h,k) & vertices (h±a,k)
Divide by the constant
4x²/16 - y²/16 = 1
x²/4 - y²/16 = 1
x²/2² - y²/4² = 1
center (h,k) = (0,0)
a = 2
b = 4
Answer:
a = 2
b = 4
Hope this helps you
Will give 11 points and brainlest and thank
Preamble to the U.S. Constitution
"We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defense, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America."
rewrite the Preamble using ur own words
Answers
Answer: We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defense, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States
Step-by-step explanation:
Lee can read at a rate of 1,100words in 5 minutes.Write and solve a world problem that uses this information
Answers
20 POINTS WILL GIVE BRAINLIEST HELP QUICKLY!!
The table shows the cost of a charm bracelet containing a different number of Charms .the table represents a linear function.
Charms: 0 1 2 3
Cost: 25 40 55 70
What does the Initial value mean for this function?
A. The cost of a bracelet without any charm is $25
B. A bracelet with 4 charms cost $100
C.each charm cost $15
D. Each charm costs $40
Answers
Answer:
A. The cost of a bracelet without any charm is $25
Step-by-step explanation:
The initial value, or the value when x=0 is the cost of the bracelet when the number of charms is 0.
Answer:
The answer is A
Step-by-step explanation:
for one I took the test
two because as the addition of a charm grows so does the price (by 15$) But the *initial* value of a bracelet with no charms is 25$.
Can someone nice enough help me ASAP this is 5th Grade Math!
Answers
Hello from MrBillDoesMath!
Answer:
"He plans to sell the carrots for $5 per bunch..." is not needed
Discussion:
The question asked is "About how many bunches will the farmer make? The text "He plans to sell the carrots for $5 per bunch..." is not needed as it does not relate to the question asked.
Regards,
MrB
Answer:
He plans to sell the carrots for $5 per bunch is not needed and around 313 bunches can be made
Step-by-step explanation: