Answers
Answer:
36
Step-by-step explanation:
We have the summation:
[tex]\displaystyle{\sum_{i=1}^{9} 2i-6[/tex]
Essentially, we want to find the sum of (2i-6) from i=1 to i=9.
First, using summation properties, we can split this to:
[tex]=\displaystyle{\sum_{i=1}^{9} 2i+\displaystyle{\sum_{i=1}^{9} -6[/tex]
On the right, it will simply be -6 evaluated 9 times. We can also move the constant out from the left:
[tex]=\displaystyle{2\sum_{i=1}^{9} i+9(-6)[/tex]
For the summation on the left, this will simply be the sum (1+2+3+...+9). This yields 45. Therefore:
[tex]=2(45)+9(-6)[/tex]
Evaluate:
[tex]=90-54=36[/tex]
So, our final answer is 36.
Related Questions
5) Ana medía 1,42 m a principios de año. Pasados tres meses, medía 1.45 y a finales de
año, 1,51. ¿Cuándo creció más rápido, en los primeros tres meses o en el resto del
año?
Answers
creció más rapido en los primeros tres meses
explicación:
creció 1 cm (.01m) por mes en los primeros tres meses y creció 2/3 cm
(.0067m) por mes en el resto de año
how many abtuse angles are there in a right angle?
Answers
Answer:
None
Step-by-step explanation:
In a right triangle there is one 90-degree angle and the other two have to be acute because the angles have to sum to be 180 degrees.
Find the slope of the line given two points:
(8, 10) and (-7, 14)
A
m = -15/4
B
m = -24/1
с
m = -4/15
D
m = 4/15
Answers
Answer:
The answer is option CStep-by-step explanation:
The slope of a line given two points can be found by using the formula
[tex]m = \frac{ y_2 - y _ 1}{x_ 2 - x_ 1} \\[/tex]
where
(x1 , y1) and (x2 , y2) are the points
From the question the points are
(8, 10) and (-7, 14)
The slope is
[tex]m = \frac{14 - 10}{ - 7 - 8} = \frac{4}{ - 15} = - \frac{4}{15} \\ [/tex]
We have the final answer as
[tex] - \frac{4}{15} \\ [/tex]
Hope this helps you
If x + y = 13 and y = 2, then which of the following is true according to the
substitution property?
OA) 2 + y = 13
B) x= 13- y
OC) x+ 2 = 13
OD) y = 13 - x
Answers
Answer:
b
Step-by-step explanation:
A shirt cost $18.99 with a 6.5% sales tax. What is the final cost?
Answers
Answer:
$20.22
Step-by-step explanation:
You multiply 18.99 with 0.065 to see how much extra money you have to pay. Then you add it back to 18.99 for the final cost.
solve 8 + 7x = 14
solve y + (-12) = 10
Answers
Answer:First one is x=1
second is y=22
Step-by-step explanation:
Answer:
[tex]x = \frac{6}{7}[/tex] y = 22Step-by-step explanation:
For first equation:
Subtract 8 from each side, so it now looks like this: 7x = 6Divide each side by 7 to cancel out the 7 next to x. It should now look like this: [tex]x = \frac{6}{7}[/tex]For second equation:
Simplify: y - 12 = 10Add 12 to each side, so it now looks like this: y = 22I hope this helps!
Which of the following are equivalent to
- 5/10?
A)- 1/2.
B)-5/-10.
C)- (4/8).
D)-0.5.
E)5/-10.
Select all that apply.
Answers
a,b and e Read the paragraph from The Evolution of Useful Things.
In 1916 the company's sales manager insisted that a laboratory be formed to carry out experiments and tests to ensure quality control so that salesmen would not be embarrassed by faulty products. The laboratory in time made possible the research and development necessary to produce new and improved items in response to problems experienced by sandpaper users.
Which words from the excerpt indicate an order of the events in this paragraph?
In 1916, to carry out
to carry out, ensure
so that, in time
In 1916, in time
Please answer 5-8 ASAP I will give brainliest
Answers
Answer:
5. m∠A = 26
6. m∠D = 118
7. m∠E = 43
8. m∠H = 85
Step-by-step explanation: complementary= 90 supplementary = 180
5. (2x - 8) + (4x +4) = 90
6x - 12 = 90
6x = 102
x = 17
m∠A = 2x - 8
m∠A = 2(17) - 8 = 26
6. (2x + 18) + (5x + 8) = 180
7x + 26 = 180
7x = 154
x = 22
m∠D = 5x + 8
m∠D = 5(22) + 8 = 118
7. (2x + 15) + (3x + 5) = 90
5x + 20 = 90
5x = 70
x = 14
m∠E = 2x + 15
m∠E = 2(14) + 15 = 43
8. (5x - 20) + (4x + 7 ) = 180
9x - 27 = 180
9x = 207
x = 23
m∠H = 4x -7
m∠H = 4(23) - 7 = 85
what is 1372678590643754873564132`4526786957586534315267489557654356478392837465647389485767483994587675483993847654378299485764738293847643728237464732823456789087654321234567890-098765432234567890876543212345678909876543223456789087654321234567899876543212345678909876147687628750-2598765246468759809-50897`86574894`702`427`0849`624`0-02`7968139750805831356139856585965.1*564738291092837465748392983745657483922376447382837465473823476547832938475647838476547882376547382983746546372819127635672819928375463728192736453627189237454637281927364563728127364564738292837456473829=
ANSWER AND YOUR TE BRAINLIEST by the way round this to the nearest quadrillion.
Answers
Answer:
HAHAHAHAHA!!!!!!!! Yeah right! LOL
Step-by-step explanation:
Answer:
69420 :)
Step-by-step explanation:
1372678590643754873564132`4526786957586534315267489557654356478392837465647389485767483994587675483993847654378299485764738293847643728237464732823456789087654321234567890-098765432234567890876543212345678909876543223456789087654321234567899876543212345678909876147687628750-2598765246468759809-50897`86574894`702`427`0849`624`0-02`7968139750805831356139856585965.1*564738291092837465748392983745657483922376447382837465473823476547832938475647838476547882376547382983746546372819127635672819928375463728192736453627189237454637281927364563728127364564738292837456473829 is 69420 rounded to nearest quadrillion is juan
worth 20 points! need help badly
Answers
Answer:
Step-by-step explanation:
FIRST ONE GOES WITH 5TH ONE 2 ONE GOES WITH 1 ONE AND LAST ONE GOES WITH 4 TH ONE
Which of the following is the best estimate for the total change in distance from the group of students' original position at the surface? Round to the nearest ten.
Answers
Answer:
- 20 feet
Step-by-step explanation:
Solve for m.
5 + 2m = 9
Answers
Answer:
m = 2
Explanation:
simplify.show work
9(20-3·8)-4²
thank you gggggggggggg
Answers
Answer:
9(20−(3)(8))−42
=9(20−24)−42
=(9)(−4)−42
=−36−42
=−36−16
=−52
2. Camilla adds 2 cucumbers for every 5 tomatoes in a veggie mix. What
is the ratio comparing cucumbers to tomatoes? *
Answers
A ratio is an amount to an amount. It said 2 to every 5 cucumbers. 2:5 is your answer
PLEASE HELP ME ASAP !!!!!!!!!!!!!!!!!
Answers
Answer:
rational numbers
Step-by-step explanation:
all numbers are rational, but not all numbers are integers or whole numbers.
Simplify using the distributive property:
6(y-8)
IM GIVING BRAINLIEST
Answers
Answer:
6y - 48
Step-by-step explanation:
6 times y its 6y
6 times -8 is -48
You cannot solve further without knowing the variable
Answer; 6y−48
Step-by-step explanation:
630 divided 18 please I need to know ASAP!!
Answers
Answer:
35 :)
Step-by-step explanation:
Answer: 35
Step-by-step explanation:
D = Divide
M = Multiply
S = Subtract
B = Bring down
The average price of a movie ticket in the United States from 1980 to 2000 can be modeled by the expression, 2.75+0.10x, where x is the number of years since 1980. Which part of the expression corresponds to the cost of movie tickets in 1980?
Answers
Answer:
$4.7Step-by-step explanation:
step one:
Let the cost be y
to solve for the cost of a movie ticket, we need to solve the expression
y=2.75+0.10x
step two:
given that x is the number of years between 1980-2000
the number of years is 20years
put x= 20 in the expression for the cost we have
y=2.75+0.10(20)
y=2.7+2
y=$4.7
-1/2y=1/2+5 what is the solution?
Answers
Answer:
-11
Step-by-step explanation:
-1/2y=1/2+5
- 1/2 y = 1+10 (by taking lcm)
2
[tex]\frac{-1}{2}[/tex] x 2y = 11
y = -11
[tex] \frac{ - 1}{ \: \: \: 2} y = \frac{1}{2} + 5[/tex]
[tex] \frac{ - 1}{ \: \: \:2} \times y = \frac{1}{2} + 5[/tex]
[tex] \frac{ - 1}{ \: \: \:2} \times y = \frac{11}{2} [/tex]
[tex]y = \frac{11}{2} \div \frac{ - 1}{ \: \: \:2} [/tex]
[tex]y = \frac{11}{2} \times \frac{ \: \: \: 2}{ - 1} [/tex]
[tex]y = \frac{ \: \: 22}{ - 2} [/tex]
[tex]y = - 11[/tex]
The value of y = -11
Therefore :-
[tex] \frac{ - 1}{ \: \: \:2} \times - 11 = \frac{1}{2} + 5[/tex]
Sort these by RULE into 3 groups
Answers
| | |
Three Groups
one two three
30 POINTS + BRAINLIEST TO FIRST CORRECT ANSWER!
The ratio table below shows the relationship between the number of bricks in a wall and the length of the wall.
Brick Wall
Number of bricks Length (ft)
6 3
8 4
12 6
18 9
When the number of bricks is multiplied by 2, the length is multiplied by
1.
2.
3.
6.
Answers
Answer:
The length will be multiplied by 2.
Step-by-step explanation:
By looking at the first and third ratio, we know that the no. of birck have been multiplied by 2 and the length has also been multiplied by 2 .
So when the number of bricks is multiplied by 2, the length is multiplied by 2
Answer:
2Step-by-step explanation:
Using the table we observe the points
(6, 3) and (12, 6)The number of bricks doubled
6*2 = 12, andThe length is doubled accordingly
3*2 = 6So the answer is 2
how is the translation of a figure on a grid different from a reflection of a figure?
Answers
Answer:
This means that on the coordinate plane, the coordinates for the vertices of the figure will change. To graph a translation, perform the same change for each point. ... In a reflection, the figure flips across a line to make a mirror image of itself.
Step-by-step explanation:
Will give brainliest!
Answers
Gianna, Jada, and Brittney and a bunch of other friends had a horseshoe competition. Jada and Brittney were eliminated after two rounds because they were too busy texting but Gianna went onto round eight to win 47 pieces of gum. Later, she gave two to each of her friends. She only has 1 remaining. How many friends does she have?
Answers
Answer:
23 friends
Step-by-step explanation:
Let the number of friends she has = x
Total number of gum = 47 pieces
She gave 2 each to her friends, hence:
2x + 1 = 47
2x = 47 - 1
2x = 46
x = 46/2
x = 23
Therefore, the number of friends she has is 23
select all input values for which f(x)=3
Answers
Answer:
Step-by-step explanation:
x=-3
Answer:
x=3
Step-by-step explanation:
3.2666 rounded to the nearest hundredth
Answers
Answer:
3.27
Step-by-step explanation:
Hope it helps!!!
Pedmas
When solving Pedmas and there are brackets inside brackets what should you do to get the operations right?
13POINTS!!
Could mark as brainelist
Answers
Answer:
Step-by-step explanation:
You do what's in the innermost brackets first, unless you have an unknown variable.
Simplify:
3(8) ° . (3) -2
Answers
3 x -2 = -6
reply if you this was wrong or you needed a different answer pls >:(
What is: 8x + 7 - 3x
Answers
Answer: 5x + 7
Step-by-step explanation:
Combine like terms
It’s two parts help meeee please
Answers
Answer:
m∠RMS = 20°
Step-by-step explanation:
Find ∠RMS and look at the two values it crosses.
∠RMS crosses through 180 and 160.
Find the difference between the two values to get the measure:
180 - 160 = 20°
So, m∠RMS = 20°
(Its also an acute angle.)
Answer:
20
Step-by-step explanation:
The mistake is in using 160 as the answer. It isn't.
The angle is very small well under 90. It is acute.
The horizontal part of the angle is on 180 degrees of the protractor.
Therefore the angle size is 180 - 160 = 20 degrees.