In a certain arithmetic sequence, consecutive terms have a positive common difference. The first 4 terms of the sequence have a sum of 80. Which of the following values CANNOT be thefirst term of the arithmetic sequence?
a - 10
b - 12
c - 16
d - 18
e - 20
Answer:
E:20
Step-by-step explanation:
I had the same question and it correct answer was E.
The first term of the arithmetic sequence will be 20. Then the correct option is E.
What is an arithmetic sequence?Arithmetic succession or arithmetic sequential is a numerical series in which the difference between subsequent terms is uniform.
In a specific number juggling grouping, successive terms have a positive normal distinction. The initial 4 terms of the grouping have an amount of 80.
Let the four terms be a - 3d, a - d, a + d, and a + 3d. Then the sum of the four-term is given as,
a - 3d + a - d + a + d + a + 3d = 80
Simplify the equation, then we have
a - 3d + a - d + a + d + a + 3d = 80
4a = 80
a = 80 / 4
a = 20
The first term of the arithmetic sequence will be 20. Then the correct option is E.
More about the arithmetic sequence link is given below.
https://brainly.com/question/15412619
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Express a^ −4 as a positive exponent
Answer:
I didn't know what is answer
A book was sold for $575 there by gaining 15%. find the cost price of the book.
Answer:
$661.25
Step-by-step explanation:
x over 575 times 15 over 100
100=86.25
86.25 is the 15% upcharge
so add 86.25 to the original price
so 575 + 86.25
$661.25
i hope this helps, if you have question let me know! goodluck
plz mark brainliest thanks!
Can you simplify the ones without a highlight on them
Answer:
[tex]\sf 17) \:8b+6-8b+1[/tex]
[tex]\boxed {\sf Combine \: like\: terms:}[/tex]
[tex]\sf 8b-8b=0[/tex]
[tex]\sf 6+1=7[/tex]
[tex]\boxed {7}[/tex]
__________________
[tex]\sf 18)\: t-5-2t+5[/tex]
[tex]\boxed {\sf Combine \: like\: terms:}[/tex]
[tex]\sf -5+5=0[/tex]
[tex]\sf t-2t[/tex]
[tex]\sf \:t-2t=-t[/tex]
[tex]\boxed{\sf -t}[/tex]
___________________
[tex]\sf 19)\: 4w-5w+w[/tex]
[tex]\boxed {\sf Combine \: like\: terms:}[/tex]
[tex]\boxed{0}[/tex]
___________________
[tex]\sf 20)\:12y-8+4y+y[/tex]
[tex]\boxed {\sf Combine \: like\: terms:}[/tex]
[tex]\sf 12y+4y+y=17y[/tex]
[tex]\boxed{\sf 17y-8}[/tex]
_______________________________
Using the graph, determine the coordinates of the vertex of the parabola.
Answer:
The coordinates of the vertex are
(-5;-9)
Answer:
(-5, -9)
Step-by-step explanation:
Use of the coordinate plane, center of the parabola 5 to the left and down 9.
Hope this helped!
2g-m=5-gh solve for g
Answer:
[tex]2g-m=5-gh \: solve \: for \: g[/tex]
[tex]2g+gh=5+m[/tex]
[tex]g(2+h)=5+m[/tex]
[tex]g=(5+m)/(2+h)[/tex]
[tex]Thank \: you!!!![/tex]
Linear Equation in two variables. It is a _________ equation with _______ values. Its graph is a _______.
Standard form A Linear equation can also be written in the form __________, Where m is the ______ and b is the ______ of the question.
Slope. It is the ________ or the steepness of a line. It is symbolized as m
Answer:
linear,2,line,mx+b,gradient,y-intercept,gradient
Step-by-step explanation:
PLS MARK AS BRAINLIEST I AM GRINDING FOR VIrTUOSO
HELP PLEASE WILL MARK BRAINLIEST TO BEST ANSWER
Answer:
the answer is B
Step-by-step explanation:
Answer:
d
Step-by-step explanation:
Write an equivalent expression for 12^3 • 12^9 • 12^4 • 12^2
9514 1404 393
Answer:
12^18
Step-by-step explanation:
Each exponent tells you the number of times 12 is repeated as a factor. The total number of repetitions of 12 as a factor in this product is ...
3 +9 +4 +2 = 18
The equivalent expression is 12¹⁸.
the velocity-time graph for a cycle is shown
Answer:
its not shwon btw
Step-by-step explanation:
Answer:
Step-by-step explanation:
Do you have a picture I can see?
What is the solution to the system of linear equations? Show your work using either substitution or elimination.
Problem:
3x-2y=7
y=x+2
please tell me how you got the answer.
Answer:
3x - 2y = 7
Where y = x + 2
3x - 2(x + 2) = 7
3x - 2x - 4 = 7
x = 11
Step-by-step explanation:
If you are solving for X and y = x+2 then you write the equation out like this.
3x - 2(x +2) = 7 …. You substitute the x + 2 for y and then solve for x.
2x - 2 times x + 2 times - 2 = 7. That becomes 3x - 2x - 4 = 7. You then subtract 2x from 3x to give you X. Then you add 4 on one side to zero it out and add 4 to the other side. 7 + 4 = 11. This gives you the answer X = 11.
4(x6+5)=2x+10 I'm not sure what the answer is can somebody help???
Answer:
[tex]4(6x + 5) = 2x + 10 \\ 4 \times 6x + 4 \times 5 = 2x + 10 \\ 24x + 20 = 2x + 10 \\ 24x - 2x = 10 - 20 \\ 22x = - 10 \\ x = \frac{ - 10}{22} = \frac{ - 5}{11} \\ thank \: you[/tex]
Answer:
-5 / 11 or -0.455
Step-by-step explanation:
this is a very simple question that does not need much complexity about it
we have
4( 6x + 5 ) = 2x + 10
first of all, we open the bracket;
24x + 20 = 2x + 10
now, we have to collect like terms;
24x - 2x = 10 - 20
22x = -10
divide through by 22 to give us!
22x / 22 = -10 / 22
x = -5 / 11
therefore,
x = - 5 / 11
hope that helps
thank you
Please help me solve this this math problem... I will mark you brainliest
Answer:
by congruency theorem <ACB= <DEB
so 5y-3=72
5y=72+3
5y=75
y=15⁰
Jim's alarm clock snoozes every 12 minutes. Jane's alarm clock snoozes every 8 minutes. After how many minutes will they both alarm clocks snoozes at the same time.
Answer:
48
Step-by-step explanation:
12*4=48
8*6=48
Answer:
24
Step-by-step explanation:
12 + 12 = 24
8 + 8 + 8 = 24
find the common factor !
PLS HELPPP TIME LIMIT!!!!
58º + 56º = 114º
180º - 114º = 66º
After bisecting an angle, Kira has two New angles, each with q measure of 18°. What was the measure of the original angle?
a) 54 degrees
b)18 degrees
c) 9 degrees
d)36 degrees
Answer:
36 Degrees
Step-by-step explanation:
The definition of an angle bisector is to split the angle into 2 equal parts.
We can then add 18 + 18 degrees to get our original 36 degree angle.
Please mark this as brainliest if this helped you!! Thank you :)
a number between 55 and 101 that is a multiple of 3, 5, and 9.
Answer:
90
that's the only number I could think of
Find the slope of the line passing through (-2, 7) and (0, 1)
Answer:
-3
Step-by-step explanation:
The equation to find this is:
[tex]m = \frac{y_{2}- y_{1} }{x_{2}-x_{1} }[/tex]
So, plugging the numbers in:
[tex]\frac{7- 1 }{-2-0 } = -3[/tex]
How do you write 4/ 9 as a decimal?
Answer:
.4 repeating
Step-by-step explanation: divide the top number by the bottom number so 4 divided by 9
) Write an expression that is equivalent to 3(7 + x).
3(7+ x) =
+
?
7
Х
7
co
9
X
4
UT
6.
-
same question how many times...?
3( 7 + x ) = 21 + 3x
..................................
can someone help me with this?
Answer:
57
Step-by-step explanation:
the sum of all angles within the triangle will be equal to 180 degrees
a) 8xy(1-2x+3y)=
b) (x^2-2)(4+2x^2+x^4)
Answer:8xy-16x^2y +24xy^2
X^6-8
Step-by-step explanation:
Graph the following Standard Form equation.
3x + 4y = 12
Answer: See my graph below
Step-by-step explanation:
should be (0,3), (4,0) but im not completely sure!!
Assume y=5x and dx/dt = 2 find dy/dt
Answer: 10
Step-by-step explanation: since dx/dt = 2, you have to create an equation. dx/dt = dy/dt * dx/dy is your equation. now we substitute. 2 = dy/dt *dx/dy. find the derivative of 5x in terms of y (dx/dy), which is 1/5. so now your equation is 2 = dy/dt * 1/5. solve for dy/dt and your answer is 10.
A bakery sells chocolate, cinnamon, maple, honey, and jelly donuts. It currently has
48 total donuts in stock. If Xiwen picks one donut from the bakery at random, she
has a 1/4 chance of picking a chocolate donut. How many chocolate donuts does
the bakery have in stock?
Since the bakery has only 48 donuts in stock and Xiwen has a 1/4 chance of picking a chocolate donut, there are a dozen (12) chocolate donuts in stock.
1/4 = 0.25
0.25 x 48 = 12
Help me please!!!!!!!
Answer:
I think she only needs 1
Step-by-step explanation:
6x6= 36, and since one can needs 36 lucia would only need one
Answer:
1
Step-by-step explanation:
The area of the fence is:
l*b
= 6 * 6
= 36ft^2
The amount that 1 tin of varnish can cover: 36ft^2
Hence, only one tin is required.
Hope this helps and be sure to have a wonderful time ahead at Brainly! :D
PLEASE HELP ME
I don't know how to solve this, please give me a step by step explanation on how to solve this
Find the value of x:
7x - 2 = 55 + 4x (as corresponding angles)7x - 4x = 55 + 33x = 57x = 19Find the value of y:
y = 7x - 2 (as alternate exterior angles)y = 7*19 - 2 y = 131#30Find the value of x:
14x - 34 = 9x + 1 (as alternate interior angles)14x - 9x = 1 + 345x = 35x = 7Find the value of y:
y + (9x + 1) = 90 (as complementary angles)y = 90 - 9*7 - 1y = 26Simplify and expand (x-1)(2x+3)
Answer:
[tex] \longmapsto(x - 1)(2x + 3) \\ = 2 {x}^{2} + 3x - 2x - 3 \\ = \boxed{2 {x}^{2} + x - 3}[/tex]
2x²+x-3 is the right answer.Write 640 g as a fraction of 4.8 kg. Give your answer in its simplest form,
Answer:
Step-by-step explanation:
640g=640g
4.8kg=4800g
640g/4800g=2/15
Hands-on equations lesson 10
Answer:
Step-by-step explanation:uhHoAnd ghiorioghiltihlgitrghile