Mathematics High School

Write the sum −3+5−7+9−11+13−15+17−19+21 using sigma notation. The form of your answer will depend on your choice of the lower limit of summation.

Answers

Answer 1

Answer:

Kindly check attached picture

Step-by-step explanation:

Given the expression : −3+5−7+9−11+13−15+17−19+21

Number of values : 1 up to 7

Take initial as - 1, since the expressed value starts with negative

Difference of 2 between the absolute value of each successive integer.

Write The Sum 3+57+911+1315+1719+21 Using Sigma Notation. The Form Of Your Answer Will Depend On Your

Related Questions

Can y'all help me with this please.

Answers

Answer:

it is 5-2 square root 7

Step-by-step explanation:

Please help.
Algebra.

Answers

-2 because two negatives equals a positive and -2 x -3 = 6 :)

Answer:

r= -3

Step-by-step explanation:

What is the value of the expression below when x=3?
4x + 1

Answers

Answer:

13

Step-by-step explanation:

plug in 3 for x

4(3)+1 = 13

Answer:

15x

Step-by-step explanation:

Solve for c 4(3+c)+c=c+4

Answers

Answer:

c= -2

Step-by-step explanation:

What times 7 will get me to 38?

Answers

There are 5 times 7 in 38 easy you can search it up and it gives you the answer right away

Answer:

5.428571428571429

Step-by-step explanation: just do 38 divided by 7 on a calculator

If I have 6 pencils and my friend has 7 apples how many pancakes can fit on the roof.
a. purple because pancakes are purple
b. Yellow because aliens don't wear hats
c. the square root of the sun
d. pencil

Answers

Answer:

red

Step-by-step explanation:

Answer:

e

Step-by-step explanation:

depending on how big your roof is, and how high you can stack the pancakes, and the number of non hat wearing aliens that are eating the pancakes, it all really depends.  but if thats wrong the answers pencil

If something travels 4 meters in one second, what is its speed?

Answers

Answer:

1.8 speed

Step-by-step explanation:

Answer:

4 m/s

Step-by-step explanation:

speed = distance/ time

speed = 4/1

speed = 4m/s

look at the picture and yea I will give you a thank you 5 stars and brainiet

Answers

Answer:

its answer 3

Step-by-step explanation:

Hi! It is answer 3. Hope this helps!

Work out the size of angle x.
X
140°
105°​

Answers

Answer:

- 65

Step-by-step explanation:

x + 140 + 105 = 180

x + 245 = 180

x = 180- 245 = - 65

The size of angle x is 25°.

What is a Triangle?

A triangle in geometry is a three-sided polygon with three edges and three vertices. The fact that a triangle's internal angles add up to 180 degrees is its most crucial characteristic. This characteristic is known as the triangle's angle sum property.

As per the given data:

The two external angles are given in the diagram.

Assume angles as ∠1, ∠2 and ∠x in anti-clockwise order.

For finding the angles of the triangle:

∠1 + 105° = 180° {linear pair angles}

∠1 = 75°

∠2 + 140° = 180° {linear pair angles}

∠2 = 80°

Using angle-sum property of a triangle:

∠1 + ∠2 + ∠x = 180°

75° + 80° + ∠x = 180°

∠x = 25°

Hence, the size of angle x is 25°.

To learn more on Triangle, click:

brainly.com/question/19976619

#SPJ2

(The given question is incomplete, the complete question is given below)

jeat is growing carrots

Answers

Please post full question

Help help help help help

Please!!!!!

Answers

I think it’s 120 ft because 6 x 4 = 24 x 10 =240 then 240/2 =120

John is a furniture maker. The graph shows the number of chairs John makes and the time it takes to make that many chairs. How many hours
will it take for John to make 30 chairs?
OA
between 1 and 2 hours
OB.
between 2 and 3 hours
OC. between 3 and 4 hours
OD
between 4 and 5 hours

Answers

I would suggest It’s either 3 and 4

Answer:

between for and five hours

Step-by-step explanation:

I NEED THIS DONE IN A FEW MINUTES
Write your own word problem that includes at least 2 operations
Write the expression for your word problem
Solve your expression showing all work

Answers

Answer:

1) Word Problem

Sally has $2 and her mother gave her $10 to buy something from the store. Sally spent $7 at the store. How much money does Sally have now?

Expression

(2 + 10) - 7

2) Word Problem

Bob has 5 friends and each of them gave Bob 2 cookies. Bob originally had 2 of his own cookies. After collecting all of the cookies Bob split them evenly among him and his friends. How many cookies does each person have?

Expression

(5 x 2 + 2) ÷ 6

10 points please help !!

Answers

Answer: D

Step-by-step explanation:

3^-7
Simplify please.

Answers

Answer:

0.000457 what I got

Step-by-step explanation:


Which would be the correct answer?

Answers

Answer:

the third answer

Step-by-step explanation:

hope it helps

of Composite Shapes P5
driguez
Figure 10: Find the area of this composite shape.
Find the area of this composite shape.
15 yd
4 yd
Subi
10 yd
6yd

Answers

It is 114, because you subtract 6 from 15. So, the bigger thing is 90, add the smaller one onto it, 6 times 4 equals 24, 90+24=114.

mmmmmm u should help -9/14+ 2/7

Answers

Answer:

0.9285714285714 is the answer.....

Solve the system by substitution.
y= -6x
y= -4x+4

Answers

Answer:

x=-2 y=12

Step-by-step explanation:

Split £99 in the ratio 1:8

Answers

Answer:

Step-by-step explanation:

https://math.icalculator.info/ratio-divider-calculator.html

11:88

total parts is 8+1 so 9
99/9 = 11 so 1 part = £11
then multiply by the ratio which gives you the answer

PLease answer this question

Answers

Answer:

b- 43%

Step-by-step explanation:

being technical its 42.857142857143% but assuming its round up it would be 43%

Answer:

c. 30%

Step-by-step explanation:

Number of the trees:

12 + 28 = 40

Number of infected is 12, so the percent of infected is:

12/40*100% = 30%

Which equations are equivalent to -1/4(x)+3/4=12? Select all that apply.

(-4x/1)+3/4=12

-1(x/4)+3/4=12

-x+3/4=12

1/4(x+3)=12

(-x/4)+3/4=12



HELP

Answers

Answer:

B and E

Step-by-step explanation:

B,C,E

is the full answer

Solve for X
12x-4=10x-10+30

Answers

Answer:

x = 12

Step-by-step explanation:

12x - 4 = 10x - 10 + 30

12x - 4 = 10x + 20

12x - 10x = 20 + 4

2x = 24

x = 12

Insta: 25k_kem

Answer:

x=12

Step-by-step explanation:

who ever answeres this question first gets brainly

Answers

g or f i’m pretty sure
tha answer is J hope this helps:))

Please help and please I need help:)

Answers

Answer:

16 eighteenths

Step-by-step explanation:

Answer:

16 eighteens fit into [tex]\frac{8}{9}[/tex]

Step-by-step explanation:

in order to find out how much eighteenths are the in [tex]\frac{8}{9}[/tex]. we just have to divide [tex]\frac{8}{9}[/tex] by [tex]\frac{1}{18}[/tex]. So we get...

[tex](\frac{8}{9}) /(\frac{1}{18}) = (\frac{8}{9})(18) = \frac{144}{9} = 16[/tex]

A U.S. penny has a mass of 2.5 grams. A U.S. quarter has a mass of 5.67 grams. What is the total mass of the two coins?

Answers

8.17 g because you add them together

The LCD for adding the fractions 1/5 + 1/10 is 10.
True
False

Answers

Answer:

true

Step-by-step explanation:

Answer: false

Step-by-step explanation:

How many 1/2 inch cubes does it take to fill a box with a width of 3 1/2 inches, length of 2 inches and height of 5 1/2 inches?

Answers

Answer:

Step-by-step explanation:

Remark

I'm going to assume that the edges of the cubes are 1/2 inch on each side.

V = 1/2 * 1/2 * 1/2 = 1/8 cubic inches.

Volume of the box

V = L * w * h

Givens

L = 2 inches

w = 3.5 inches

h = 5.5 inches

Solution

V = L * w * h

V = 2 * 3.5 * 5.5

V = 38.5

1/8 has the decimal equivalent value of 0.125

Number of cubes needed = Volume of the box / volume of the cube

Number of cubes needed = 38.5 / 0.125

Number of cubes needed = 308

Please help, past due.

Answers

Answer:

this figure is straight line angle is 180°.

angle rps+ angle qpr= angle qps

6x+11°+7x+143°=180°

13x+154°=180°

13x=180°-154°

13x=26

x=26/13

x=2

angle rps is 6x+11

6×2+11

23°

y-(-3y) combine the like terms to create an equivalent expression

Answers

Answer: 4y

Step-by-step explanation:

Distribute the negative sign to get rid of the parentheses

y+3y = 4y

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