What is the sum of the series?
10
Σ(7k– 2)
k=1

Answers

Answer 1

Answer:

365

Step-by-step explanation:

The simplest method is to substitute values of k = 1 to 10 into the expression and sum the terms, that is

7(1) - 2 + 7(2) - 2 + 7(3) - 2 + 7(4) - 2 + 7(5) - 2 + 7(6) - 2 + 7(7) - 2 + 7(8) - 2 + 7(9) - 2 + 7(10) - 2

= 5 + 12 + 19 + 26 + 33 + 40 + 47 + 54 + 61 + 68

= 365


Related Questions

PLEASE HELP THE WORKSHEET IS: graphing speed.
I WILL GIVE 100 POINTS!!! ITS SCEINCE MIDDLE SCHOOL!!!
Analysis and Conclusion
1. Which task and distance resulted in the fastest speed?
2. Create a graph to show your fastest speed, using the times for 0, 5, and 10 meters.
3. Which task and distance resulted in the slowest speed?
4. Create a graph to show your slowest speed, using the times for 0, 5, and 10 meters.

Answers

Task 1: Walking 10 meters

Times:

0 meters: 0 seconds

5 meters: 7 seconds

10 meters: 15 seconds

Graph for fastest speed (walking 10 meters): As time increases from 0 to 15 seconds, distance increases linearly from 0 to 10 meters.

Distance (meters)

^

|

10 \\

| |\

5 / |

| / |

0 /

0 5 15

Time (seconds)

Task 2: Crawling 5 meters

Times:

0 meters: 0 seconds

5 meters: 25 seconds

10 meters: 50 seconds

Graph for slowest speed (crawling 5 meters):

Distance (meters)

^

|

10

/|

/ |

5/|

/ |

0

0 25 50

Time (seconds)

To answer your questions and complete the analysis and conclusion section, we'll need the specific data regarding the tasks, distances, and corresponding times. Please provide the necessary information, including the task descriptions and the times recorded for 0, 5, and 10 meters for both the fastest and slowest speeds.

100 POINTS ANSWER ASAP ANSWER CORRECTLY OR I WILL REPORT

100 POINTS ANSWER ASAP ANSWER CORRECTLY OR I WILL REPORT
100 POINTS ANSWER ASAP ANSWER CORRECTLY OR I WILL REPORT

Answers

Answer:

if you have a demos or a school calculator you can put in “ graph and tables “ then you can out in the alone numbers 5,6,7,8 into the left side and on the top put X. Next to that X put Y and put -10 on each, then go to a purple one the answer should be x=2.8 etc. + another number. That should be your answer in X if thats is what its asking.

For the second one it should be the same except you will be using Y.

30 POINTS!!!!!The difference between negative five times a number and three is no less than seven.

Boundary point:

Answers

Answer:

15+\(15x+7\)

Step-by-step explanation:

Answer:

The answer would be x=8/5 or 1 3/5

please write a function for the points (1/3,0) (-2 3/4,0) and (0,-5) and explain the steps.
thank you!

Answers

The function for the points are  y = -15x - 5

How to determine the function

From the information given, we have that;

The points are;

(1/3,0) (-2 3/4,0) and (0,-5)

Using the point-slope form of a linear equation, we have;

y - y₁ = m(x - x₁)

Such that;

m is the slope of the liney - y₁ and (x - x₁) are the points

Using (1/3, 0) and (0, -5), we have that the slope is;

m = (0 - (-5))/0 -1/3)

expand the bracket

= 5 / (-1/3)

= -15

Now, take any of the given points and substitute the values

Using (1/3, 0), we get;

y - 0 = -15(x - 1/3).

y = -15x - 5.

Learn more about functions at: https://brainly.com/question/25638609

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The function for the points solved by  (1/3,0) (-2 3/4,0) and (0,-5) solved by point slope form is \(a=-15b-5\)

We have given the points:

(1/3,0) (-2 3/4,0) and (0,-5)

Using the formula of linear equation

\(a-\)\(a_{1}\)\(=x[b-b_{1}]\)                                                          

Where we will consider (1/3,0) = \(a-a_{1}\) and (0,-5) = \(b-b_{1}\)

that is 1/3 = \(a\), 0 = \(a_{1}\) and

0 = \(b\), -5 = \(b_{1}\)

\(x\) refers to the slope of line (take any variable)

Now for finding the value of \(x\),

\(x=a-a_{1}/b-b_{1}\)

inserting the values,

\(x=[0-[-5]]/[0-1/3]\\x= -15\)

Substitute the value of \(x\) in the equation

\(a-0=-15[b-1/3]\)

By simplifying the equation, we get

\(a=-15b-5\)

To know more about functions and points:

https://brainly.com/question/30721594

2(3) I NEEEEED HELPLPLPLPLP

Answers

Answer:6

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

2(3) can also be written as 2 x 3 which equals 6

2(3) means you are adding 2, 3 times.

2 + 2 +2 = 6

3. Write an expression to represent "6 more than y"

Answers

Answer: y+6

Step-by-step explanation:

In order to do this, we do 6 more than y. More than is going to be addition, and we get y+6 since it is 6 more than y.

I think the answer would be Y+6 I’m pretty sure

Sam is selling used books online. The first book the customer buys is $8.00, the second-third book are $7.00 each, the fourth and all other books, b, are $5.00. A buyer has $35 to spend, before tax and shipping. Write an inequality to show how many books this customer may buy before the applicable taxes and shipping charges.

Answers

8+7+7+5b is less than or equal to 35

HEY GUYS I POSTED A QUESTION BASED ON HEALTH ON MY PAGE FOR 15 POINTS CAN SOMEONE GO CHECK IT OUT IM POSTING THIS FOR MATH BC MORE PEOPLE DO MATH OVER HEALTH TY MUCH LOVE!!!!!!!!

Answers

Answer:

ill look now and try and help!

Step-by-step explanation:

Answer:

I'll check

Step-by-step explanation:

homework

if it isn't too much trouble, for the first screenshot do you think you could just draw a dot for where the coordinates need to be? That would be a great help.

homeworkif it isn't too much trouble, for the first screenshot do you think you could just draw a dot
homeworkif it isn't too much trouble, for the first screenshot do you think you could just draw a dot

Answers

Answer:

First screenshot: attached

Second screenshot: y-intercept: (0, -2). X-intercept: (-1,0)

Step-by-step explanation:

First screenshot:

To graph a line, you have to isolate the y-variable.

\(x+y=3\)

First, subtract x from both sides of the equation.

\(x+y-x=3-x\\\)

\(y=3-x\) (This is what you would graph)

---------------------------------------------------------------------------

Second screenshot:

The x-intercept is where the graph first touches the x-axis.

The y-intercept is where the graph first touches the y-axis.

Who are you cheering for in the super bowl if you choose my team the you get brainliest.

Chiefs or Buccaneers

Answers

Answer: Chiefs

Step-by-step explanation:

I don’t know I’m going to what u think :)

Answer:

Buccaneers

Step-by-step explanation: just a wild guess and thanks for the free points!!

a study is done to compare the fuel efficiency of cars. cars in group 1 generally get about 23 miles per gallon/ cars in group 2 generally get about 44 miles per gallon. compare the groups by their means. then make an inference and give a reason the inference might be true.

the mean for group [__] is less than the mean for group [__].
the cars in group [__] generally are more fuel-efficient.
the cars in group [__] may be smaller

Answers

Answer:

Step-by-step explanation:

the mean for group 1 is less than the mean for group 2.

the cars in group 2 generally are more fuel-efficient.

the cars in group 2 may be smaller

pls help me with this i have been trying to figure it out

pls help me with this i have been trying to figure it out

Answers

Answer: The perimeter of crater lake is 17.27 miles.

Step-by-step explanation:

The shape of the lake is like a circle

The diameter of lake = d = 5.5 miles

∵ shape pf lake is circle, so the diameter of circle = d = 5.5 miles

Let The perimeter of crater lake = p miles

Now, As we know

The perimeter of circle = \pi × diameter

the value of \pi = 3.14

Or, p =  pi × d

Or, p = pi × 5.5 miles

Or, p =  3.14 × 5.5 miles

∴ p = 17.27 miles

So, The perimeter of circle = perimeter of lake = p = 17.27 miles

Hence, The perimeter of the crater lake is 17.27 miles.

It was my cousin's idea

The cacluation of pi is 3.14

Answer:5.5\(\pi\)

Step-by-step explanation:

Can Someone Help Me Please? I am offering 100 points!
Geraldine is graphing the inequality x less-than 6. Which statements below describe steps she may take to graph the inequality correctly? Check all that apply.
Draw an open circle at 6.
Draw a closed circle at 6.
Shade all numbers less than 6.
Shade all numbers greater than 6.
Shade all numbers to the right of 6.
Shade all numbers to the left of 6.

Answers

Answer:

shade all numbers less than 6

shade all numbers to the left of 6

Step-by-step explanation:

i believe this is the answer because if you graph x<6, you can see that the shaded area is to the left of 6 (numbers less than 6).
Desmos graphing calculator helps

Answer:

3, & 6

Step-by-step explanation:

PLEASE HELP!!!!! SEMESTER TEST PART 2 K12 PLEASE ANSWER ALL THE QUESTIONS GETS BRAINLIEST

PLEASE HELP!!!!! SEMESTER TEST PART 2 K12 PLEASE ANSWER ALL THE QUESTIONS GETS BRAINLIEST

Answers

Answ

Step-by-step explanation:

step answer-
Characteristics is greecex

Select all of the prime numbers from the list that can divide the number 15 exactly.
A 2
B 3
C 5
D 7
E 11
F 13
G 17
H 19
I 23

Answers

Answer: B3 and C5

Step-by-step explanation: The prime factors of 15 are 3 and 5 (because 3×5=15, and 3 and 5 are prime numbers).

Mark me brainliest!

Answer:

B 3 and C 5

Step-by-step explanation:

A table of values of a linear function is shown below. Find the output when the input is n. Type your answer in the space provided.
I need the 5th output, I'll give brainiest

A table of values of a linear function is shown below. Find the output when the input is n. Type your

Answers

Answer:

the equation is f(x)4x+2

if the input is a generic number n, the output will be 4n+2

Step-by-step explanation:

i need help pls i will give you the crown if your the first one to get it right

i need help pls i will give you the crown if your the first one to get it right

Answers

the prime factorization of 312 is A
The prime factorization of 312 is 2^3 x 3 x 13. Or in other words A.

Candy has some money
She bought a drink for £ 1.45 and a piece of cake for £ 1.20
She now has two thirds of her money left.

How much money did Candy have to start with

Answers

Answer:

7.95

Explanation:

1.45+1.20= 2.65

2.65x3=7.95

Rewrite 10^-5 using a positive exponent.

Answers

The positive exponents demonstrate the number of times the foundation is multiplied, and the further  discussion can be defined as follows:

It says how so many times a base amount is multiplied and a negative exponent tells us how many instances a base number is divided.

These exponents are important in mathematics because they allow us to short anything which otherwise is truly tedious to write.

Converting the positive exponent:

Rewrite 10^-5 using a positive exponent.

Answer:

1/10^5 (1 over 10 to the power of 5)

Step-by-step explanation:

Move 10^−5 to the denominator in 10−^5 using the negative exponent rule b^−n=1/b^n so basically that would mean the answer would be 1 over 10 to the power of 5:

1/10^5

pasty needs 3 1/3 cups of flour for a recipe. write the numbers of cups as an inproper fraction
11/3
9/3
10/3
7/3

Answers

Answer:9/3
It’s 9/3 bc all you have yo do it 3x3 then you add the 1 and that equals 9 and then you keep your denominator.
The number of cups as an improper fraction would be 10/3. You can multiply the whole number (3) by the denominator in the fraction (3) to get the number of 1/3 cups in 3 full cups. This would equal 9, or 9/3. And, since you already had a third of a cup in your total, you would add that to the 9/3 cups. So, you would have 1/3 + 9/3 = 10/3 cups

The telephone company offers two billing plans for local calls. Plan 1 charges ​$29 per month for unlimited calls and Plan 2 charges ​$19 per month plus ​$0.05 per call.
a. Use an inequality to find the number of monthly calls for which Plan 1 is more economical than Plan 2.
b. Explain the meaning of the answer to part a.

Answers

Answer:

Step-by-step explanation:

wouldn't you do 29 x 19=551+0.05=551.05

Answer:

The number of monthly calls for which Plan 1 is more economical than Plan 2 is 200 calls If more than 200 calls are made, the plan 1 charge will be more than plan 2. Let the number of charges per month be x  If plan 2 charges ​$16 per month plus ​$0.04 per call, this is expressed as 0.04x + 16  Price that pan 1 charges = $24  If Plan 1 is more economical than Plan 2, this is expressed as:0.04x + 16 > 24 Subtract 16 from both sides:0.04x + 16 - 16 > 24 - 16   0.04x > 8 x = 6/0.04 x = 200 This shows that if more than 200 calls are made, the plan 1 charge will be more than plan 2.

Jordan is knitting a sweater. He keeps track of how many balls of green and yellow yarn he uses in the table below. If he uses 15 balls of yellow yarn, how many balls of green yarn will he need?

Answers

15 green yarn he needs

Multiply the pairs of numbers and match them with their products. Tiles (-5)(4.2) (-7)(-3) (4) (5) (2.5)(-9) Pairs 22.5 21 -22.5 -21 111

Answers

Here are the pairs matched with their products:

- (-5)(4.2) matches with -21

- (-7)(-3) matches with 21

- (2.5)(-9) matches with -22.5

Pairs (4) and (5) do not have corresponding products in the given options.

The products of the given pairs of numbers are:

(-5)(4.2) = -21

(-7)(-3) = 21

(4)(5) = 20

(2.5)(-9) = -22.5

So, the pairs of numbers and their products are as follows:

(-5)(4.2) = -21 matches with -21.

(-7)(-3) = 21 matches with 21.

(4)(5) = 20 matches with 20.

(2.5)(-9) = -22.5 matches with -22.5.

I hope this helps!

PLEASE HELPPPPPPP ITS DUE TMR

PLEASE HELPPPPPPP ITS DUE TMR

Answers

Answer:

3 on the x 7 on the y

Step-by-step explanation:

you just need to plot one and get it to the next one but count how many times it moves on each line

Answer:10

Step-by-step explanation:

The answer is 7 but because you have to round it to the nearest ten you get 10

(Similar Triangles MC)

Triangle XYZ is similar to triangle JKL.

triangle XYZ with side XY labeled 8.7, side YZ labeled 7.8, and side ZX labeled 8.2 and triangle JKL with side JK labeled 10.44

Determine the length of side LJ.

8.79
9.36
9.84
10.13

Answers

Answer:

C) 9.84

Step-by-step explanation:

JK ~ XY

XY = 8.7

JK = 10.44

10.44/8.7 = 1.2

That’s the scale or dilation

LJ ~ ZX

ZX = 8.2

8.2 X 1.2 = 9.84

LJ = 9.84

The length of side LJ in the triangle JKL is 9.36.

We are given that triangle XYZ is similar to triangle JKL, which means that the corresponding sides are proportional.

We are also given the lengths of the sides of triangle XYZ, so we can use these lengths to find the corresponding sides of triangle JKL.

The ratio of the corresponding sides of triangle XYZ to triangle JKL is:

XY : JK = 8.7 : 10.44

YZ : KL = 7.8 : 9.36

ZX : LJ = 8.2 : x

Since the two triangles are similar, we know that the ratios of the corresponding sides are equal.

Therefore, we can set the two ratios equal to each other and solve for x, the length of side LJ:

8.7 / 10.44 = 7.8 / 9.36 = 8.2 / x

Cross-multiplying, we get:

8.7 * x = 10.44 * 7.8

x = (10.44 * 7.8) / 8.7

x = 9.36

Therefore, the length of side LJ is 9.36.

To learn more about length here:

https://brainly.com/question/32060888

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Write a word problem that could be solved by the equation given in problem 2.

The equation : 1/5p = 4

Answers

Answer:

2+2+2=21

Step-by-step explanation:

Answer p=20

Multiply both sides of the equation by

5 x 1/5 p= 5 x4

Reduce the numbers with the greatest common factor

This last part might seem hard so here a picture

Write a word problem that could be solved by the equation given in problem 2. The equation : 1/5p = 4

You know the height of a chair and the distance of the leg from the other chair, but you don’t know the length from the chair leg to the other leg you need to replace. What is the length of the leg? .Does this make seanse for project option 1 in 03.02

You know the height of a chair and the distance of the leg from the other chair, but you dont know the

Answers

Answer:

a

Step-by-step explanation:

The answer is A. Just took the quiz

Help asap! im ruinning out of time .-.' A triangular prism is 34 inches long and has a triangular face with a base of 36 inches and a height of 24 inches. The other two sides of the triangle are each 30 inches. What is the surface area of the triangular prism?

Help asap! im ruinning out of time .-.' A triangular prism is 34 inches long and has a triangular face

Answers

Answer:

1,664 square yards

Step-by-step explanation:

Given: A triangular prism is 20 yards long and has a triangular face with a base of 24 yards and a height of 16 yards. The other two sides of the triangle are each 20 yards.

Surface area of the triangular prism:

The formula to determine the surface area of the triangular prism is

SA= bh+PL

where base: b=24

height: h=16

length: l=20

Perimeter: P= 20+20+24= 64

Next we follow the steps of the formula and our equation is:

SA= (24x16) + (64x20)

24x16= 384     and    64x20= 1280

            384+1280= 1,664

SA= 1,664

the surface area of the triangular prism is 1664 square yards.

   

The radius of a right circular cone is 2 in. By what factor will the volume change if the radius of the cone is multiplied by 3 and its height remains fixed?

The volume will be multiplied by
. Real Answer?

Answers

The volume of a right
circular cone increased by a
factor of 25. If the height
remained fixed, by what
factor was the radius

Answer:

the answer is 9

Step-by-step explanation:

the volume will be muiltplied by9.

when the radius of the right circular cone is muiltplied by k and the height remains fixed,the volume of the cone is muiltplied by k^2.

in this problem k =3 so k^2=9

help crrrrrrrrrrrrying rn

help crrrrrrrrrrrrying rn

Answers

the answer is x+y=180

Answer:

y=2x

hope it helps

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