Answers
Answer:
A) [tex]\frac{n^2}{2} + \frac{n}{2}[/tex]
B) 78
Step-by-step explanation:
B) To find the sum of first 'n' whole numbers , formula used is :-
[tex]\frac{1}{2} ( n^2 + n)[/tex]
We have to find the sum of first 12 whole numbers . So here n = 12
Putting the value of 'n' in above formula ,
[tex]\frac{1}{2} ( 12^2 + 12) \\\\=> \frac{1}{2} ( 144 + 12)\\\\=> \frac{156}{2} = 78[/tex]
Answer:
see explanation
Step-by-step explanation:
A
Given
[tex]S_{n}[/tex] = [tex]\frac{1}{2}[/tex](n² + n) ← multiply each term in the parenthesis by [tex]\frac{1}{2}[/tex]
= [tex]\frac{1}{2}[/tex] n² + [tex]\frac{1}{2}[/tex] n
B
To find the sum of the first 12 whole numbers, substitute n = 12 into the formula, that is
[tex]S_{12}[/tex] = [tex]\frac{1}{2}[/tex] (12² + 12) = [tex]\frac{1}{2}[/tex] (144 + 12) = [tex]\frac{1}{2}[/tex] × 156 = 78
Related Questions
evaluate the expression if x =6 and y =7. 3x+2y
Answers
EXPLANATION: It says x =6 and y=7
And if number are rite next to each other with no symbol you always multiply so it would be 3 6 + 2 7 so 3x6=18 and 2x7=14 so it would be 18+14
The value of the expression 3x + 2y when x =6 and y =7 is 32.
What is an expression?An expression is a combination of some mathematical symbol such that an arithmetic operator and variable such that all are constrained and create an equation.
In other meaning, expression is very useful to determine the end or root value of constraint.
As per the given expression, 3x + 2y
Put x = 6 and y = 7 as,
3(6) + 2(7) = 18 + 14 = 32
Hence "The value of the expression 3x + 2y when x =6 and y =7 is 32".
To learn more about expression,
https://brainly.com/question/14083225
#SPJ2
A chicken farm ideally produces 100,000 eggs per day. But this total can vary by as many as 45,000 eggs. What is the maximum and minimum expected production at the farm?
Answers
Answer: The maximum is 145000 and the minimum is 55,000 eggs
Step-by-step explanation:
What is the answer?
(-x^4 + 13x^5 + 6x^3) + ( 6x^3 + 5x^5 + 7x^4)
Answers
Answer:
−x 4 +18x+ 5 +12x 3 +7x 4
Step-by-step explanation:
hope this helps
Maria is starting a small business selling flowers. She has to pay $150 for a vendor’s permit. Each bouquet cost her $7 and she sells them for $15. How many bouquets must Maria sell to break even?
Answers
Answer:
18.75
Step-by-step explanation:
might not be 100% right
Sofia's gym membership is $275 per year in addition to an annual locker fee of $95. What is the monthly fee? *
Answers
Answer:
384 is your answer.
What is the quotient? StartFraction (negative 3) Superscript 0 Over (negative 3) squared EndFraction
Answers
Answer:
1/9
Step-by-step explanation:
The applicable rule of exponents is ...
a^0 = 1 . . . . a ≠ 0
__
[tex]\dfrac{(-3)^0}{(-3)^2}=\dfrac{1}{(-3)(-3)}=\boxed{\dfrac{1}{9}}[/tex]
Answer:
1/9
Step-by-step explanation:
What is the rate of change of the function represented by the table?
x
y
1
5
2
5
3
5
4
5
Answers
Answer:
0
Step-by-step explanation:
All the y-values are the same (5). There is no change.
The rate of change is zero.
Answer:
Most Likely -2.5. For Edge A.
Step-by-step explanation:
Take -3.5 and -1 and subtract. The answer should give you -2.5. Correct me if I'm wrong cause I need help like the rest of yall lolz.
Solve for x.
5x - 6 = -46
Does any one know the answer?
Answers
Answer:
X= -8
Step-by-step explanation:
Subtract 6 on both sides
that leaves you with
5/5=-40/5 The 5s cancel out leaving you with -40/5 and -40 divided by 5 is -8
Answer:
x= -8
Step-by-step explanation:
5x - 6 = -46 original equation
5x = -40 added 6 to both sides
[tex]\frac{5x}{5} = \frac{-40}{5}[/tex] divide both sides by 5
x = -8 solution
can anyone explain what is ratio? plzz
Answers
Answer:
a ratio indicates how many times one number contains another.
Step-by-step explanation:
Complete the table of the given rule
X. Y
6
0
4
Answers
Answer:
10, 4, 8
Step-by-step explanation:
This equation here is shown in the form of [tex]y = x-4[/tex]. However, we are solving for x when we know y. I find it easier to convert the equation so we have [tex]x = ...[/tex]. To do this we can add 4 to both sides.
[tex]y + 4 = x, x = y+4[/tex].
Now that we know our equation ([tex]x = y+4[/tex]), we can substitute the values of y inside to find x.
[tex]x = 6+4\\\\x = 10[/tex]
[tex]x = 0+4\\\\x = 4[/tex]
[tex]x = 4+4\\\\x = 8[/tex]
Hope this helped!
1) Moving a figure around a fixed point in the plane is called making a _ _ _
Answers
Answer:
isometry
Step-by-step explanation:
hope this helps :)
What the perimeter is of the shape
Answers
Answer:
22 Units
Step-by-step explanation:
Which expression repersents the total cost for Ari to rent a bike for b hours and Meg to rent a scooter for s hours?
Answers
Answer:
9b+10s
Step-by-step explanation:
Answer:
9b+10s
Step-by-step explanation: taking quiz right now
hi! can someone help me how to write the following in standard form. thank you :)
3 x 10^9
3 x 10^6
3 x 10^3
3 x 10^0
3 x 10^(-3)
3 x 10^(-6)
Answers
2. 3,000,000
3. 3000
4. 3
5. 0.003
6. 0.000003
A chicken farmer also has cows for a total of 30 animals, and the animals have 66 legs in all. How many chickens does the farmer have?
Answers
Answer:
27 chickens
Step-by-step explanation:
A chicken farmer also has cows for a total of 30 animals
Both animals have a total of 66 legs
Let a represent the number of chicken
Let b represent the number of cows
a + b= 30........equation 1
Since a chicken has only two legs and a cow has four leg then, the expression can be represented as
2a + 4b= 66........equation 2
From equation 1
a + b= 30
a = 30-b
Substitute 30-b for a in equation 2
2a + 4b= 66
2(30-b) + 4b= 66
60 - 2b + 4b= 66
60 + 2b= 66
2b= 66-60
2b= 6
b= 6/2
b= 3
Substitute 3 for b in equation 1
a + b = 30
a + 3=30
a= 30-3
a= 27
Hence the farmer has 27 chickens
-5 (-1 + 6)need help
Answers
Answer:
-25
Step-by-step explanation: When you multiply to negatives together you get a positive thus being shown in the problem -5 times -1 =5 then you multiply 6 times -5 and whenever you multiply a positive number by a negative you'll always get a negative number so 6 times -5 =-30 then you add 5 and -30 and you get -25. I hope this is right :D
1. Which equation results in this table of values?
Input (x)
1
3
5
10
Output (y)
3
7
11
21
O A. Output = Input + 2
O B. Output = 2 · Input + 2
O C. Output = 2 · Input +1
OD. 2. Input
Output + 1
Answers
Answer:
A,is the write answer .......
The disorder of the sun is approximately 1,392,000,000 meters. What is this length expressed in scientific notation?
Answers
Answer:
Step-by-step explanation:
Please mark Brainy because I showed you all the steps so you can do it in the future! :)
A computer has a list price of $1,200. It is on sale for 30% off list. What is
the sale price of the computer?
) )
A $840
B $800
C) $720
D $360
Answers
Answer:
a 840$
Step-by-step explanation:
bcuz
marked price = $1200
discount % = 30%
selling price = ?
so,
SP = MP - D% of MP
= $1200 - 30% × 1200
= $1200 - 360
= $840
-8W + 5 = -43
I need help asap
Answers
−8w+5−5=−43−5
-8w=-48
Step 2: Divide both sides by -8.
-8w/-8 = -48/-8
W=6
What is the answer to -3 + 2 =
Answers
Answer:
-1
Step-by-step explanation:
when adding a negative and a positive you can turn it to subtraction if it makes it easier for you.
-3+2=2-3
2-3=-1
-3+2=-1
make sense?
find an equation in slope-intercept forma for the línea with slope -12 and y-intercept=1/2
Answers
Answer:
Option D
Step-by-step explanation:
Slope intercept is:
[tex]y=mx+b[/tex]
m - slope
b - y-intercept.
The slope in the question is -12. The y-intercept is 1/2.
Plug in the values:
[tex]y=mx+b\rightarrow \boxed{y=-12x+\frac{1}{2}}[/tex]
Hope this helps.
Answer:
Slope-intercept form:
[tex]y = -12x + \frac{1}{2}[/tex]
Step-by-step explanation:
-Since you already have the slope and the y-intercept, all you need is to apply them to a slope-intercept form:
Slope: [tex]-12[/tex]
y-intercept: [tex]\frac{1}{2}[/tex]
-Slope-intercept equation:
[tex]y = mx + b[/tex]
(where [tex]m[/tex] represents the slope and [tex]b[/tex] represents the y-intercept)
-Applying to slope-intercept form:
[tex]y = -12x + \frac{1}{2}[/tex]
And were done.
Which of the following is proper notation to describe the set of all letters in the alphabet?
{a, b, c, . . ., z}
(a, b, c, etc.)
a through z
none of the above
Answers
-3а- 8+2а = 13
How do you solve this (like terms)
Answers
Answer:
a = -21
Step-by-step explanation:
-3a +2a -8 = 13
- a-8 = 13
-a -8 -13 = 0 ( the sign changes from +13 to -13 )
-8 -13 = a ( the sign of a changes from -a to + a ) -21 = a
Follow me!
12x + 7 <-11 OR 5x– 8 > 40
Answers
Answer:
take 7 from both sides of the inequality which gives 12x <-18
divide both sides by 12 and u get x=-3/2
Evaluate the expression for the given value of the variable X-3/10 for x= 3/7
Answers
Answer:
9/70
Step-by-step explanation:
X-3/10 for x= 3/7
3/7-3/10
9/70
A student is using a table of values to graph the line y = -2x + 3. The student's table is shown below. What number would this student fill in for the "?" in the table? x y -4 11 -5 13 -6 ?
Answers
Answer: Y
Intercept Is the correct answer
Step-by-step explanation:
How do you write 2x^3 + 2x^2 - 3 as a trinomial?
Answers
Answer: =
6x^2−5x−6
Step-by-step explanation: Multiply each term in one expression times each term in the other, then simplify by combining like terms.
Here are the like terms : =(3x+2)(2x−3)=3x(2x+3x(−3)+2(2x)+2(−3)
= 6x^2−9x+4x−6
=6x2−5x−6
What construction does the image below demonstrate? (1 point)
Answers
Answer:
The answer is "A regular hexagon inscribed in a circle" I also took the practice exam and got it right.
Oops I keep on commenting the answers instead of adding it in as an answer lol.
Find the additive inverse of each number.
15
Answers
Answer:
-15
Step-by-step explanation:
Answer:
-15
Step-by-step explanation:
This because the additive inverse is the opposite number. If you where to use a number line, you would have the same amount of spaces from zero as 15. that is an additive inverse.
