Answers
=========================================================
Explanation:
The symbol that looks like an "E" is the uppercase greek letter sigma. It's used for summation. Specifically we are adding terms of the form -4+5n. What we do is replace n with values from the set {2,3,4,...,9,10}. After evaluating each item, we add up the results to get our final answer.
If n = 2, then -4+5n = -4+5*2 = 6 which is the first term.
If n = 3, then -4+5n = -4+5*3 = 11 is the second term
and so on until you reach n = 10.
A table is a handy way to keep track of everything (see below). Adding everything in the second column leads to the final answer of 234.
Answer: 234
Step-by-step explanation:
Related Questions
The histogram shows the performance of students on a midterm test.
15
Select the correct answer.
How many students answered fewer than 20 questions correctly?
A.
8
B.
10
C.
12
D.
14
Reset Next
Answers
Answer:
12 kids
Step-by-step explanation:
First look at the bars that are behind 20 as you can see 10 and 0 are behind 20. Then you count the numbers on the left up on the bars. 0 has 8 kids, and 10 has 4 kids
For which problem situation could the equation 45x + 55x = 350 be used?
A 350 mile telephone cable costs $55 per mile for one section and $45 per mile for a different section. What is the total cost of the cable?
A car, traveling 45 mph, leaves Dallas heading for Odessa 350 miles away. At the same time, a truck leaves Odessa for Dallas traveling 55 mph on the same road. When will the two vehicles meet?
A 350 mile telephone cable is cut so the shorter piece is 45/55 of the whole cable. How long is each piece?
Two vehicles start from the same point traveling in the same direction. One vehicle travels 55 miles per hour (mph) and the other 45 mph. When will the two vehicles be 350 miles apart?
Answers
Answer:
45 x + 55 x = 350
x increases until the total equals 350
45 + 55 = 100 = relative speed of approach
(B) traveling cars meet this equation's specifications (x = 3.5)
The correct statement is option B)
What is the speed of an object?Speed is the rate at which an object's position changes, measured in meters per second. For example, if an object starts at the origin, and then moves three meters in three seconds, its speed is one meter per second. The equation for speed is simple: distance divided by time
Given here: The equation as 45x+55x=350
A car, traveling 45 mph, leaves Dallas heading for Odessa 350 miles away. At the same time, a truck leaves Odessa for Dallas traveling 55 mph on the same road.
Therefore the relative speed of the two trucks is given by 45+55=100
and let the time taken to meet is x then we can construct an equation as follows x=350/100
or, 45x+55x=350
Hence, The correct statement is option B)
Learn more about speed here:
https://brainly.com/question/28224010
#SPJ2
If somebody could answer this I’ll give you a crazy amount of points
Answers
Answer:
See below
Step-by-step explanation:
1. 223 is q added to 158
223 = q + 158
2. d divided by 34 is the same as d
d / 34 = d
3. 299/b = t
4. p = 204 × p
5. 103 is equal to m added to 343
103 = m + 343
Hope that helps! :)
(Also, can you mark me as brainliest?)
which inequality is true?
Answers
need help with eighth grade function assignment
Answers
Please answer the picture
Answers
Answer:
a
Step-by-step explanation:
5q +5q= 10q
Answer:
5q +5q= 10q
Step-by-step explanation:
At a farmer’s market, two vendors sell fresh milk. One vendor sells 2 liters for $3.80, and another vendor sells 1.5 liters for $2.70. Which is the better deal?
1. 1.5 liters at $2.70 is a better deal because the unit rate is 56 cents.
2. 2 liters for $3.80 because the unit rate is 53 cents.
2 liters for $3.80 because the unit rate is $1.90
3. 1.5 liters at $2.70 is a better deal because the unit rate is $1.80.
Answers
Answer: 2 liters for $3.80 because the unit rate is $1.90
hey you can help help pls pls help help me
Answers
Answer:
A.)
Step-by-step explanation:
HOPE IT HELPED:)!!
Answer:
2
Step-by-step explanation:
(3/4)/(3/8) =
(3/4) x (8/3) = 2/1 = 2
Hope this helps!
The following chart shows the times of runners in the 100 meter sprint.
Rahn 11.33 sec
Miguel 11.5 sec
Tyrone 11.09 sec
George 11.28 sec
Who won the race?
George
Tyrone
Rahn
Miguel
Answers
Answer:
Miguel
Step-by-step explanation:
Miguel had..
.04 less than Tyrone
.28 less than Rahn
.23 less than George
Answer: Tyrone
Step-by-step explanation:
The sum of 5.5 and twice a number is -10
What is the number?
n = 7.75
n=2.125
n= -7.75
n=-2.125
Answers
Answer:
n=-7.75
Step-by-step explanation:
Based on the given conditions, formulate: 5.5+2×X=-10
Rearrange unknown terms to the left side of the equation:2x=-10-5.5
Calculate the sum or difference:2x=-15.5
Divide both sides of the equation by the coefficient of variable:x=-15.5/2
Multiply both the numerator and denominator with the same integer:-155/20
Cross out the common factor:-31/4
get the result: -7.75
Answer: -7.75
of the 400 of the sixth graders at school, 60% want more library books. how many students want library books?
Answers
Answer:
240
Step-by-step explanation:
it’s simple math!
Since 60% of the 400 kids want more Library books, all you need to do is:
100% - 60% = 40%
find 40% of 400:
400 x 0.4 = 160
then subtract 160 from 400 to get 60%:
400 - 160 = 240
therefore 240 is your answer! :)
please mark brainlest!
have a nice day!*v*
Answer:240 6th graders want library books Step-by-step explanation:
help if you know pls and thanks
Answers
Good luck on the test lol-
A landscaper mowed 2 1/4 yards in 1 1/2 hours. How much did she mow in 1 hour? How many hours does it take to mow one yard?
Answers
Answer:
1.5 or 1 1/2 of a lawn in one hour. about one hour to mow one yard.
Step-by-step explanation:
Write the sentence as an equation.
248 more than the quantity 78 times a equals a
Answers
i need help please:)
Answers
Step-by-step explanation:
option C is correct answer
HELP PLS ITS DUE TODAY :((
Answers
Answer:
C would be one space to the right of D
B would be two spaces below D
A would be three spaces to the left from the new location B
Step-by-step explanation:
Which of the following is true?
Group of answer choices
a. |−5| < 4
b. |−4| < |-5|
c. |−5| = -5
or d. |−4| > |5|
Answers
Answer:
B
Step-by-step explanation:
The left side of 4 is less than the right side of 5
Question 10(Multiple Choice Worth 1 points)
(04.01 LC)
Marneshia walked three over eight of a mile in three over five of an hour. What equation can be used to calculate her unit rate in miles per hour?
a three eighths over three fifths = five eighths mile per hour
b three eighths over three fifths = one and three fifths miles per hour
c three fifths over three eights = one and three fifths miles per hour
d three fifths over three eights = five eighths mile per hour
Answers
Answer:
The Answer is A
Step-by-step explanation:
First you take 3/8 and 3/5. After that, you put 3/8 over 3/5. To get Miles per Hour, you want to put distance over time. Next you invert and multiply. When you are doing this you want to have it looking like this: [tex]\frac{3}{8}[/tex] * [tex]\frac{5}{3}[/tex]. Finally you multiply the top and the bottom and reduce the fraction. Your final answer will me 5/8.
You are converting the numbers shown below into scientific notation. Which of the options will be a number times 10−6? Select all that apply.
A)0.00578
B)0.00000445
C)0.000002243
D)0.000091
Answers
Find the sum.
−7+(−24
Answers
Answer:
[tex] - 7 + ( - 24) \\ = > - 7 - 24 \\ = > - 31[/tex]
hope helpful <3
Simple answer > - 31
A parabola with no real zeros, a negative leading coefficient, and an odd y-intercept.
pls help!
Answers
Answer:
Step-by-step explanation:
A parabolic graph with no real zeros never touches or crosses the x-axis.
If the leading coefficient is negative, that tells us that the parabola opens down (and, in this case, that the entire graph is below the x-axis, because there are no real zeros.
If the y-intercept is odd, then the constant term, c, in ax^2 + bx + c, must be a negative, odd integer.
Suppose we say that the vertex of a particular parabola that is described by the above is (-2, -1) and that the y-intercept is -3. (Note: this is strictly an example.) Then the vertex equation of this parabola is obtained from the general vertex equation of a parabola,
y = a(x - h)^2 + k. Here h = -2 and k = -1, and so the particular parabola is
y = -a(x + 2)^2 - 1, where a is a constant and -a is negative.
In general form, this would be y = -a(x^2 + 4x + 4) - 1, or
y = -ax^2 - 4ax - 4a -1
and the constant terem (-4a -1) must be an odd negative integer
This is only one of an infinite number of possible equations for the parabola described above.
Answer:
A parabolic graph with no real zeros never touches or crosses the x-axis.
If the leading coefficient is negative, that tells us that the parabola opens down (and, in this case, that the entire graph is below the x-axis, because there are no real zeros.
If the y-intercept is odd, then the constant term, c, in ax^2 + bx + c, must be a negative, odd integer.
Suppose we say that the vertex of a particular parabola that is described by the above is (-2, -1) and that the y-intercept is -3. (Note: this is strictly an example.) Then the vertex equation of this parabola is obtained from the general vertex equation of a parabola,
y = a(x - h)^2 + k. Here h = -2 and k = -1, and so the particular parabola is
y = -a(x + 2)^2 - 1, where a is a constant and -a is negative.
In general form, this would be y = -a(x^2 + 4x + 4) - 1, or
y = -ax^2 - 4ax - 4a -1
and the constant terem (-4a -1) must be an odd negative integer
This is only one of an infinite number of possible equations for the parabola described above.
Please help me and please answer correctly. last try, please
Answers
Answer:
B
Step-by-step explanation:
The y-intercept is 0,2 so that rules out C and D.
We then see that A cannot be true so it must be B.
P.S. I'd love to have brainiest plz!
Please help me! I can't figure out the answer!
Answers
Answer:
...
Step-by-step explanation:
Question 3(Multiple Choice Worth 1 points)
(04.04 MC)
An oil company fills 1 over 12 of a tank in 1 over 4 hour with gasoline. At this rate, which expression can be used to determine how long it will take for the tank to fill completely?
1 over 4 ⋅ 1 over 12
1 over 12 ⋅ 4
1 over 4 ⋅ 12
12 ⋅ 4
Answers
Answer:
1/4 ⋅ 12
Step-by-step explanation:
The oil company fills 1/12 of a tank in 1/4 hour (20 minutes) with gasoline.
1/4 ⋅ 12
(time) ⋅ (total tank size)
Please answer the picture
Answers
Answer:
5(4x−3)
Step-by-step explanation:
20x−15
= 5(4x−3)
Answer:
20x−15
= 5(4x−3)
Step-by-step explanation:
A rectangular box is designed to have a square base and an open top. The volume is to be 2048in.3
What is the minimum surface area that such a box can have?
Answers
Answer:
x=y=z in 3 dimensions. So, you have x2y=4=x3⟹x=y=3√4.
Step-by-step explanation:
Answer:
hi
Step-by-step explanation:
Let x = the length of the sides of the base and h = the height:
Volume = (area of base)(height)
V = x2h
2048 = x2h
2048/x2 = h
Surface Area = area of base + 4(area of vertical side)
SA = x2 + 4xh
Eliminate the h by using 2048/x2 = h:
SA = x2 + 4x(2048/x2)
SA = x2 + 8192 x-1
Take the derivative of SA wrt x, set it to zero, solve for x. Plug that value of x into the surface area equation to find the minimum surface area.
Seven less than the difference of a number and three.
Answers
Answer:
10
Step-by-step explanation:
I took the quiz
Look at pic and find whats next
Answers
Hi,
49 - 9 = 40
40 - 7 = 33
33 - 5 = 28
28 - 3 = 25
25 - 1 = 24
Explanations :
9-2 = 7
7-2 = 5
5-2 = 3
3-2 = 1
✅(•‿•)
Answer:
49-9=40
40-7=33
33-5=28
28-3=25
25-1=24
What is the product of the square of 3 and cube of 5?
Answers
Help! I will give brainliest if correct
Answers
Answer:
the awnswr i believe is B, because a funcion has diffrent x's
Answer:
No, its not.
Step-by-step explanation: