Answer: Choice C and Choice D
========================================================
Explanation:
Choice A doesn't work because it the $1 should be $7 instead.Choice B doesn't work because it should be Elena spending $7 total on 3 notebooks and a $1 pen. The x is the amount per notebook.Choice C does work. If x is the number of grapes Noah gives each friend, then 3x is the total amount Noah gives over. Then 3x+1 is the number of grapes total. That +1 at the end is the grape Noah eats. We end up with 3x+1 = 7 because Noah starts off with 7 grapes.Choice D works also. The x is the number of hours for math, science and history each. So 3x is the combined time of those three classes. Add on 1 to get 3x+1 to represent all 7 hours, ie 3x+1 = 7.Choice E does not work. If it was her spending $7 on 3 markers and a $1 pen, then it would work.Answer:
[] Noah shares 7 grapes with 3 friends. He eats 1 and gives each friend the same number of grapes.
[] Andre studies 7 hours this week for end-of-year exams. He spends 1 hour on English and an equal number of hours each on math, science, and history.
Reasoning:
[✗] The first story, with Diego, does not work because the whole is $1 in the problem and $7 in the diagram.
[✗] The second story, with Elena, does not work because the 7 is ignored entirely and the x becomes a known value, 57.
[✓] The third story, with Noah, does work because he splits seven grapes equally among three friends (the x's) and eats one.
[✓] The fourth story, with Andre, does work because 7 hours were spent studying. One on English and the rest (three subjects) split evenly (x).
[✗] The fifth story, with Lin, does not work because the total is $3 when it should be 7.
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I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.
- Heather
Find the second term of the binomial expansion (a-1)^3
Answer:
[tex](a - 1) ^{3} \\ {a}^{3} - {1}^{3} \\ a {}^{3 } - 1[/tex]
80% of the astronomy club members own a telescope. If 20 students own a telescope, how many students are in the astronomy club in all?
Answer:
25 students
Step-by-step explanation:
Let x represent the amount of students in the astronomy club then:
80%x=20
Convert 80% to a fraction. Any percentage is that number over 100:
[tex]\frac{80}{100}x=20[/tex]
Simplify the fraction:
[tex]\frac{8}{10}x=20[/tex]
[tex]\frac{4}{5}x=20[/tex]
Multiply both sides by 5:
[tex]4x=100[/tex]
Divide both sides by 4:
[tex]x=25[/tex]
There are 25 students in the astronomy club.
Which equation can be used to represent the statement? Sixteen is the same as one and two-tenths times a number added to negative 8. 16 1. 2 n = negative 8 16 1. 2 n = 8 16 = 1. 2 n (negative 8) 16 = negative 1. 2 n 8.
The equation can be used to represent statement 'Sixteen is the same as one and two-tenths times a number added to negative 8' is,
[tex]16=1.2n+(-8)[/tex]
How to write algebraic equation from statement?
Algebraic equation are the expression which consist the variables, coefficients of variables and constants.
The algebraic equation are used represent the general problem in the mathematical way to solve them.
Steps to write down the simple algebraic equation from statement-
Identify all the factors of the expression.Assume a variable for the changing values.Put a coefficient for the variable, if there is any rate of change of variable.Use constant numbers for the fixed values.Given information-
The given statement is 'sixteen is the same as one and two-tenths times a number added to negative 8'.
The statement given in the problem is talking about a unknown number. Let the unknown number is [tex]n[/tex].
The number is sixteen is the same as one and two-tenths times a number added to negative 8.
This means when our number n, multiplied by the fraction 2/10, and added by the negative 8, then it becomes equal to the number 16. Mathematically,
[tex]16=n+\dfrac{2}{10}\times n+(-8)\\16=1.2n+(-8)[/tex]
Thus the equation can be used to represent the given statement is,
[tex]16=1.2n+(-8)[/tex]
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Sun Valley High School is trying to raise money for their band program. Nike and Adidas are both willing to sponsor their 5k walk/run using different financial plans. Nike promises to double the amount of money they contribute every kilometer, and will start with a $4 donation. Adidas promises to start with a $30 donation and will add $10 for every kilometer.
Which statement best describes which plan Sun Valley High School should choose and why?
A) Adidas starts off being the better plan because they contribute more at the start, but Nike ends up giving twice as much money as Adidas.
B) Nike is the better plan because they end up giving more total money since they are doubling.
C) Adidas ends up with a total of $80, but Nike only contributes $64, so Adidas is the better plan.
D) Adidas is the better plan because adding patterns are always better than doubling patterns.
Answer:
B because the more kilometers that they walk they will give 4 dollars but also double the money they contribute
Step-by-step explanation:
hope this helps if I'm wrong please notify me and I will help
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▉━╯┗━╮
▉┈┈┈┈┃
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╱╰━━━╯
A rectangle has a length of 10 inches its width is 6 inches what is the area of the rectangle?
Area:-
[tex]\\ \tt\longrightarrow LB[/tex]
[tex]\\ \tt\longrightarrow 10(6)[/tex]
[tex]\\ \tt\longrightarrow 60in^2[/tex]
Answer:
Length of rectangle= 10 inch
Breadth of rectangle= 6 inch
Area of rectangle= L X B
= 10X6
= 60 sq. inch
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And here’s the second pic for the Brainly
Answer:
3a³ -20a² +16a -24
Step-by-step explanation:
4.Unlike the other problems shown here, this one requires you combine like terms.
= a(3a² -2a +4) -6(3a² -2a +4)
= 3a³ -2a² +4a -18a² +12a -24
= 3a³ -20a² +16a -24
12 and 3000 as decimals full equation
Answer:
12=0.12x100
3000=0.3x10000
In a camp ,there is enough flour for 300 persons for 42 days.How long will the flour last if 20 more persons join the camp
Answer:
ok so basically 21
Step-by-step explanation:
Reduce the expression, if possible, by cancelling the common factors.
Exact Form:
31 /150
Decimal Form: 0.206
Consider the polynomial: StartFraction x Over 4 EndFraction – 2x5 StartFraction x cubed Over 2 EndFraction 1 Which polynomial represents the standard form of the original polynomial? StartFraction x cubed Over 2 EndFraction – 2x5 StartFraction x Over 4 EndFraction 1 –2x5 StartFraction x cubed Over 2 EndFraction StartFraction x Over 4 EndFraction 1 –2x5 StartFraction x Over 4 EndFraction StartFraction x cubed Over 2 EndFraction 1 1 – 2x5 StartFraction x cubed Over 2 EndFraction StartFraction x Over 4 EndFraction.
Answer:
the correct answer is B
Step-by-step explanation:
–2x5 + StartFraction x cubed Over 2 EndFraction + StartFraction x Over 4 EndFraction + 1
Answer:
–2x5 + StartFraction x cubed Over 2 EndFraction + StartFraction x Over 4 EndFraction + 1 aka B
Step-by-step explanation:
6. Find the value of x.
I 5x+ 2
6x + 4
122 - 4
H
J P
Step-by-step explanation:
sum of two interior angles is equal to one exterior angle....this implies that,
(6x+4) +(5x+2)= 12x-4
11x+6=12x-4.......make X the subject
11x-12x=-4-6
-x= -10......divide both sides by -1
x=10
Which one of the following rules describe this transformation?
Answer:
B
Step-by-step explanation:
When you reflect across the x-axis, the x coordinate stays the same, but the y coordinates changes signs.
Can someone answer this questions please :))
Answer:
Answer is the second one( -1/2)
Help me pls look at the image 20 points
is this correct? i added them together to simplify it. (will give brainliest if theres an early response)
Answer: I think the answer is 5.3x + 1.7
Lena is a software salesperson. Her base salary is $1800 and she makes $50 more for every copy of English is Fun she sells. Her total pay, P (in dollars), after selling c copies is given by the following.
P=50c+1800
1. what is the Lenas total pay if she sells 25 copy's?
2. If lenas total pay is 3500 how many copys did she sell?
1. Lenas total pay if she sells 25 copy is $3050.
2. The copy sold is 34.
What is the Lenas total pay if she sells 25 copy's?From the information given, Lena is a software salesperson. Her base salary is $1800 and she makes $50 more for every copy of English is Fun she sells.
It should be noted that the total pay, P after selling c copies is given by:
P = 50c + 1800
c = number of copies
The pay for 25 copies will be:
P = 50c + 1800
P = 50(25) + 1800
P = 1250 + 1800
P = 3050
When lenas total pay is 3500 the copys did she sell will be:
50x + 1800 = 3500
Collect like terms
50x = 3500 - 1800
50x = 1700
Divide
x = 34
The copy is 34.
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If you spin the spinner 55 times, what is the best prediction possible for the number of times it will land on pink? (WORTH 30 POINTS)
Answer:
45 times
Step-by-step explanation:
There are nine pink sections and 11 sections total. The probability of landing on a pink section is 9/11.
Multiply the probability by 55
[tex]\frac{9}{11}[/tex] × [tex]\frac{55}{1}[/tex]
Cancel the 11 and 55. The 11 becomes a 1 and 55 becomes a 5
[tex]\frac{9}{ 1}[/tex] × [tex]\frac{5}{1}[/tex]
45
PLEASE HELP DUE AT 11:59 For the inequality, find two values for r that make the inequality true: -5x<2
A. -2
B. 3
C. -5
D. -6
E. 5
Answer:
b,e
Step-by-step explanation:
-5x -2= 10 false
-5x3=-15 true
-5x-5=25 false
-5x-6=30 false
-5x5=-25 true
[tex]\large\textbf{Hey there!}[/tex]
[tex]\mathbf{-5x < 2}\\\\\huge\textbf{DIVIDE -5 to BOTH SIDES}\\\mathbf{\dfrac{-5}{-5} < \dfrac{2}{-5}}\\\huge\textbf{CANCEL out: }\huge\boxed{\mathbf{\dfrac{-5}{-5}}}\huge\textbf{ because it give you 1}\\\huge\textbf{KEEP: }\huge\boxed{\mathbf{\dfrac{2}{-5}}}\huge\textbf{ because it help what is being}\\\huge\textbf{compared to the x-value}\\\large\textbf{NEW EQUATION: x }\mathbf{ > \dfrac{2}{-5}}\\\\\huge\textbf{SIMPLIFY IT!}[/tex]
[tex]\huge\textbf{Thus, your answer is: \boxed{\mathsf{x > - \dfrac{2}{5}}}}\huge\checkmark[/tex]
[tex]\large\textbf{Good luck on your assignment \& enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]Factor by Grouping:
8x²+12x+2xy+3y
Answer:
(2x +3) (4x +y)
Step-by-step explanation:
refer the image
9.41 x 4.8 with the work pls .
Answer: 45.168
Step-by-step explanation: First find 941 x 48 = 45168 then put the decimal point at the thrid digit as the decimal in 9.41 is in the 2nd digit and 1st in 4.8 so 2 + 1 = 3 so the answer is 45.168
HELP QUICK!! PLEASE HELP!!! PLEASE PLEASE
Answer:
A.) Y= 8
B.) X= 9
Step-by-step explanation:
I noticed that the equation is x4 because 4x4= 16 and 5x4= 20.
So, I multiplied 4x2 to get 8 and divided 36/4 to get 9.
There are 12 cookies and 4 friends what fraction of the cookies will each friend get?
Answer:
1/4
Since there are 4 friends and 12 cookies, assuming they divide them equally, each friend gets 12/4=3 cookes and so the fraction would be 3/12 which would simplify to 1/4.
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[tex]\huge\textbf{Hey there!}\\\\\huge\boxed{\mathbf{Equation: \dfrac{4\ friends}{12\ friends}}}\\\\\\\huge\boxed{\mathbf{= \dfrac{12\ cookies}{4\ friends}}}\\\\\\\huge\boxed{\mathbf{= 4\ friends\div 12\ cookies}}\\\\\\\huge\boxed{\mathbf{= \dfrac{4\div4\leftarrow friends}{12\div4\leftarrow cookies}}}\\\\\\\huge\boxed{= \mathbf{\dfrac{1}{3}\ in\ all}}\\\\\huge\textbf{Thus, your answer is: \boxed{\mathsf{\dfrac{1}{3}}}}\huge\checkmark[/tex]
[tex]\huge\textbf{Good luck on your assignment \& enjoy}\\\huge\textbf{ your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]please help me out in this question
Nico owns 11 instructional piano books. Two are beginner books, six are intermediate books, and three are advanced books. If two books are randomly chosen from the collection, one at a time, and replaced after each pick, what is the probability that he first chooses an advanced book and then chooses a beginner book? StartFraction 5 Over 121 EndFraction StartFraction 6 Over 121 EndFraction Five-elevenths Six-elevenths.
Answer: c . 6/121
Step-by-step explanation: 100% on edge
The probability that he first chooses an advanced book and then chooses a beginner book is 6/121.
ProbabilityGiven:
Beginner book=2
Intermediate book=6
Instructional piano books=11
Advanced books=3
Hence:
Probability=(2×3)÷(11×11)
Probability=6/121
Therefore the probability that he first chooses an advanced book and then chooses a beginner book is 6/121.
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what is 2 1/7 divided by 1 1/4
Answer: 32/35
Step-by-step explanation:
reduce the expression , if possible , by cancelling the common factors
Can someone please help me? i will give brainliest!!!
Answer:
Step-by-step explanation:
Area of parallelogram = bh
=> The height = 108 : 9 = 12 ft
The length of the rug is less than the height of the parallelogram : 10 < 12
The width of the rug is also less than the base of the parallelogram : 6 < 9
So, the rug will fit in the room
:D
A hungry elf ate 28 of your muffins. That was 7/8 of all of them! With how many did you start?
Answer:
32
Step-by-step explanation:
28 / 7 = 4
4 * 8 = 32
Double check your answer:
28/32 = 7/8
ALL GOOD!
The diagram represents 6x2 – 7x 2 with a factor of 2x – 1. A 2-column table with 2 rows. First column is labeled 2 x with entries 6 x squared, negative 4 x. Second column is labeled negative 1 with entries negative 3 x, 2. Both rows are labeled with a question mark. What is the other factor of 6x2 – 7x 2? 3x – 2 3x – 1 3x 1 3x 2.
Factors of a polynomial can divide it without leaving remainder. The other factor of [tex]6x^2 - 7x + 2[/tex] is given by Option D : [tex]3x + 2[/tex]
How to factorize a polynomial?Let the polynomial A(x) has one factor f(x).
Then, it means, we have:
[tex]\dfrac{A(x)}{f(x)} = g(x)[/tex]
Thus, A(x) can be written as [tex]A(x) = f(x) \times g(x)[/tex]
Thus, the other factor of that polynomial is
[tex]g(x) = \dfrac{A(x)}{f(x)}[/tex]
For given case, the polynomial [tex]A(x)[/tex] is
[tex]A(x) = 6x^2 - 7x + 2[/tex]
Its one factor f(x) is given [tex]f(x) = 2x - 1[/tex]
Thus, its second factor is obtained as:
[tex]g(x) = \dfrac{A(x)}{f(x)} = \dfrac{6x^2 - 7x + 2}{(2x - 1)} = \dfrac{6x^2 -4x -3x - 2}{2x - 1}\\\\g(x) = \dfrac{2x(3x + 2) - 1(3x + 2)}{2x - 1} = \dfrac{(2x - 1)(3x + 2)}{2x - 1}\\\\g(x) = (3x + 2)[/tex]
Thus, the second factor of the given polynomial is
Option D : [tex]3x + 2[/tex]
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If the colours of the alphabet smell dusty how many elephants with one tusk are located in canada?
Answer:
Approximately twenty-three and a half.
It takes 8 men to complete a job in 20 hours. How many hours will 5 men take
Answer:
Well first we find out how many hours 1 man takes
So we say
Unknown. ×given
Known
20 divided
8. × 1
=2,5 hr/1 man
Then we multiple the wanted man by the single hour man
5 ×2,5
=12,5 hrs
Hope this answer helps
HELP Please I BEGGING YOU
8/5=x/16
=5x=128
x=25.6
it is b answer
7/10=x/12
10x=84
x=8.4
it is a answer