hi can somone tell me what this means: ∑

Answers

Answer 1

Answer:

indicates summation and is used as a shorthand notation for the sum of terms that follow a pattern

Step-by-step explanation:


Related Questions

Is this statement true or false?
16 of 250 is equal to 250 of 16

Answers

Answer:

Yes, they both equal 40

Hope I helped and if you want an explanation just ask me!

Answer:

True

Step-by-step explanation:

Both equal 40.

Gordon types 2,220 words in 30 minutes. Find the unit rate.

Answers

Answer:

74

Step-by-step explanation:

write the three ratios that are equal to the ratios given: there is 6 i need answers for all of them please so i will give you a brainiest
1. 3/5
2. 4/8
3. 6/18
4. 8:10
5. 6:8
6. 10:12

Answers

Answer:

Step-by-step explanation:

1: 6/10, 9/15, 12/20

2:8/16, 12/24, 1/2

3:1/3, 2/6, 3/9

4:4/5, 8/10, 12/15

5:3/4, 6/8 9/12

6:5/6, 15/18, 20/24

Complete the table for this equation. y = 4x Enter your answers by filling in the boxes. x y 1 2 3 4 5

Answers

Answer: x = 1 , y = 34

x = 2 , y =  38

x =  3 , y = 42

x = 4 , y = 46

x = 5 , y = 50

Step-by-step explanation:

Answer:

hope this helps :)

Step-by-step explanation:

Formula: y = 4x

Knowing this information, you just need to substitute numbers 1, 2, 3, 4, 5.

y = 4(1)  | Answer: 4

y = 4(2) | Answer: 8

y = 4(3) | Answer: 12

y = 4(4) | Answer: 16

y = 4(5) | Answer: 20

Which fraction is equivalent to fraction with numerator 4 and denominator negative 9?

fraction with numerator negative 4 and denominator negative 9
fraction with numerator 9 and denominator 4
fraction with numerator negative 9 and denominator 4
fraction with numerator negative 4 and denominator 9

Answers

Answer:

The fraction that is equivalent to fraction with numerator 4 and denominator negative 9, is fraction with numerator negative 4 and denominator 9.

Step-by-step explanation:

4/-9 does not equal -4/-9

4/-9 does not equal 9/4

4/-9 does not equal -9/4

4/-9 does equal -4/9

Answer:

Step-by-step explanation:

The fraction that is equivalent to fraction with numerator 4 and denominator negative 9, is fraction with numerator negative 4 and denominator 9.

Euler's formula, V − E + F = 2 relates the number of vertices V, the number of edges E, and the number of faces F of a polyhedron. Solve Euler's formula for V.

Answers

Answer:

V = E - F + 2

Step-by-step explanation:

V - E + F = 2

V + F = E + 2

V = E - F + 2

|-9| + |12| = ?
options:

-3


3


-21


21

Answers

Answer:

21

Step-by-step explanation:

the absolute value of -9 is 9 because you take away the negative. so you would add them like normal and 9+12 is 21

PLEASE HELPPP!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

I thank it is C

Step-by-step explanation:

hope this helps you

Answer:

its A

Step-by-step explanation:because if you you count how many numbers you have of each then you would notice that 6 is the only one that repeats 3 time so if you count the little lines then you get your answer

write a direct variation equation that relates 16 and 2

Answers

Upvote

1

Downvote

Add commeAnswer:

y = -4x

When x = 4, y = -16

When y = 20, x = -5

Step-by-step explanation:

First off, definitions: Direct variations refers to two variables being related with neither being the denominator of a fraction. (nothing along the lines of y = 1/x)

So, given that, I simply found what the ratio was between the two values. Something like buying gas at the gas station. The ratio between the gas you get and the money you pay is the price per gallon of gas. In this case, the proportion is -4 (-16 divided by 4).

Thus we have a relationship. For each y, you have negative four x's. Thus, y = -4x.

Finding the value of x when y = 20 simply requires plugging values in. Remember, a fundamental principle in all of Algebra is substitution. If two things are equal, they are interchangeable. So, if you saw "3 + 4" in a mathematical expression, you could simply erase it and write 7, so long as no other mathematical rules (multiplication before addition, for instance) interferes.

Thus, if y = 20, we can take our original equation and replace y with 20.

y = -4x       =>     20 = -4x

Then, simply solve for x, keeping in mind that when two items in math are written against each other, it means multiplication. Thus, we reverse the multiplication to division and divide both sides of the equation by -4.

20 / -4 = -5

Answer:8

Step-by-step explanation:16

10. Question is in the picture. - please help!

Answers

The answer is 3!

I have to type this part to post it, just ignore this

Answer:

3

Step-by-step explanation:

Start by applying the order of operations which in this case would be left to right. -9 is the same thing as -9/1. Multiply the -9 by a 1 and you would just get -9. Multiply the 1 by 4 and you would get 4, so now you have -9/4. You can remember decimals by seeing them in terms of 1. 0.25 is 1/4, 0.5 is 1/2, and so 0.75 is 0.25 tripled, which would be 1/4 tripled or 3/4. Now with dividing, you can just multiply -9/4 by the reciprocal, which would be to flip the other fraction, which would give us 4/-3, and 4x-9 is -36 and -3x4 is -12 which would give us -36/-12. Dividing to negatives gives us a positive, and 36/12 is the same as 3/1 which would give us 3. Hope this helps!

The solution shown for the equation is incorrect. What is the correct​ solution? What is the​ error?
(CHECK IMAGE BELOW FOR EQUATION)

What is the​ error?
A. The right side of the equation should be 6 after dividing each side by -4.
B. The right side of the equation should be 8 after subtracting -8 from each side.
C. The left side of the equation should be - r after dividing each side by -4.
D. The left side of the equation should be - 8+4r after distributing.

Answers

Answer is D

A negative times a negative is always a positive. For example, a -4 times -r is +4r.
The answer is D.

Step by step explanation:

A negative times a negative is ALWAYS a positive. So -r * -4 = + 4r. Therefore, the correct solution to this equation is r = 6

Hope this helps! Let me know of you’re still confused about anything!

swun math unit 6 lesson 18 pls answer dis rightnow 6th grade

Answers

Answer:

1. $60

2. $80

3. $78

Step-by-step explanation:

1. 30 divided by 3 times 10 is 100. 18 divided by 3 times 10 is 60. Therefore if 30% of the budget is $18, 100% is $60.

2. 75 divided by 3 times 4 is 100. 60 divided by 3 times 4 is 80. In total, Annie and Ernie raised $80.

3. 100 divided by 10 times 6 is 60. 130 divided by 10 times 6 is 78. Karen spent $78 on shoes

PLEASE HELP QUICK!! Which dot plot shows a sample that is most representative of the number of pets in a household? A dot plot going from 0 to 6. There are 3 dots above 0, 5 dots above 1, 4 dots above 2, 3 dots above 3, 2 dots above 4, 0 dots above 5, and 1 dot above 6. A dot plot going from 0 to 6. There are 2 dots above 1, 3 dots above 2, and 1 dot above 5. A dot plot going from 0 to 6. There is 1 dot above 0, 2 dots above 1, 1 dot above 2, 1 dot above 3, 1 dot above 4, 1 dot above 5, 2 dots above 6. A dot plot going from 0 to 6. There is 1 dot above 1, 2 dots above 2, 3 dots above 3, 2 dots above 4, 1 dot above 5.

Answers

0-6 I’m sorry if wrong

LoL please help math is giving me a mathake

Answers

Answer:

The answer is C

Step-by-step explanation:

Use the Point-Slope Equation by doing y2-y1/x2-x1

Let say that 10 is x2 and 16 is y2. We can also say that -5 is x1 and -2 is y1.

Now Subtract 16 by -2

Do the same with 10 and 2.

We should get y=6/5x+b

We are halfway through now. We have to find the Y intercept.

let's replace x,y with -5,-2 which were one of the points.

-2=6/5(-5)+b

Once we simplify, we get y=4

Therefore, the answer is y=6/5x+4, or C

Hope you understand

Answer:

c?

Step-by-step explanation:

What is the median of this data set?

{11, 6, 11, 9, 7, 2, 5}

Enter your answer in the box

Answers

2,5,6,7,9,11,11
The median is 7.

Answer:

The answer is 7 hope this helps :DD

Step-by-step explanation:

Answer for: K12 5.03 Quiz: Median

What is the volume of the sphere? (Use 3.14 for pi.)

Answers

V Sphere = 4/3 x pi x r³

d = 42 cm so r (radius) = 21 cm

then

V ≈ 4/3 x 3,14 x 21³ ≈ 38 772 cm³

Which phrase describes the algebraic expression 5 t minus 2?

Answers

Answer:

(5-t-2)=

Step-by-step explanation:

5-t=2. is correct! :)

PLeas help i think the answer is t-19<34 but im not 100% sure cant get this question wrong!!!!

Answers

You are bro it is correct

All the edges of cube add to a total length of 48 cm. What is the area of one face of the cube?

Answers

The amnesty is 8 please mark brill’s t

On the coordinate plane, plot four points that are each 3 units away from the point (P = -2, -1). Write the coordinates of each point.

Answers

Answer: (-5, -1) (-2, 2) (0, 1) (-2, -3)

Step-by-step explanation: If this helped please consider giving me brainliest!

Have a good day! :D

The required four points are (-5,-1), (1,-1), (-2,-4) and (-2, 2), which are 3 units away from the point P(-2,-1).

What is a coordinate plane?

A surface with two dimensions known as the coordinate plane is created by two number lines. The x-axis is a single number line that runs horizontally. The y-axis is a vertical number line, which is the other number line.

In the given plane,

Coordinate of point P is (-2,-1)

The four points that are 3 units away from the point P(-2, -1) can be,

(-5,-1), (1,-1), (-2,-4), (-2, 2)

The points (-5,-1), (1,-1), (-2,-4), (-2, 2) are presented on the coordinate plane.

To learn more about Coordinate plane on:

https://brainly.com/question/24134413

#SPJ2

What is -5 + 15

-10
10
20
-20

Answers

The answer is 10 because when you add a negative it’s actually like your subtracting

Answer:

-5+15 is 10

Step-by-step explanation: what you could've done was 15-5 and it would've brang the same answer.

giving brainliest please help!

Answers

Answer:

D

Step-by-step explanation:

multiply acrossed for both fractions

Jamie needs some clothes for school. He will purchase 5 socks for $ 1.31 each, 3 dozen t-shirts at $ 2.34 a dozen, and a pair of jeans for $13.38 . Jamie estimates that he will spend 35.00 on clothes . is Jamie estimation reasonable ? How much will he spend exactly?

Answers

Answer:

he was a little bit off but he was close because it $26.95

Step-by-step explanation:

1. 5 x 1.31= 6.55

2.  3x2.34=7.02

3.  6.55+7.02+13.38=  26.95

jamie’s answer was reasonable

jamie spent $26.95

A cable company charges $70 per month for cable service to existing customers.

a. Find a linear equation representing the relationship between x, the number of months of service, and y, the total amount paid in dollars by an existing customer.

b.For new customers, there is an additional one-time $100 service fee. Repeat the previous problem for new customers.

c.When the two equations are graphed in the coordinate plane, how are they related to each other geometrically?

Answers

Answer:

a: y=70x

b: y=70x+100

c: They are parallel to each other, with equation b's line being 100 dollars above equation a.

Step-by-step explanation:

They both have the same slope (70), but new customers will have a y intercept of 100 because of the one-time fee.

Don't forget to like and rate!

The equation is given by y = 70x and for the new customers it is given by y = 70x + 100.

A linear equation is of the form:

y = mx + b

where y, x are variables, m is the slope of the line and b is the y intercept

Let x represent the number of months of service, and y represent the total amount  

a) A cable company charges $70 per month, hence:

y = 70x

b) The is an additional one-time $100 service fee, hence:

y = 70x + 100

Hence the equation is given by y = 70x and for the new customers it is given by y = 70x + 100

Find out more at: https://brainly.com/question/4281414

Part 2:
Use the table to answer questions 6-8. SHOW YOUR WORK.
Researchers surveyed 100 students on which superpower they would most like to have.

6) What is the probability that a girl was chosen?

7) What is the probability a person chosen was the name of someone who chose to fly?

8) What is the probability the person chosen was a male who chose “other”?

Answers

Answer:

  6) 52%

  7) 38%

  8) 10%

Step-by-step explanation:

You want various probabilities based on the survey results shown in the table.

6) Female

The total number of female responses is 12 +32 +8 = 52 out of the 100 surveyed.

The probability a girl was chosen is 52%.

7) Fly

The number of respondents who chose to fly was 26+12 = 38 of the 100 surveyed.

The probability the person chose to fly was 38%.

8) Other

The number of males who chose "Other" was 10 out of the 100 surveyed.

The probability the person was a male who chose Other was 10%.

__

Additional comment

The questions ask about the probability that such and such was chosen. The table only reflects the probability given that the person chosen was among those surveyed. There is actually no way to answer the question asked based on the table data given.

<95141404393>

Yo can someone help me out

Answers

Answer:

(d ) is the answer

I am sure

Step-by-step explanation:

Hey there!

Your answer is Option D.

Reason:

Product of 2and 9 = 2(9)

Product of 4 and 7 = 4(7)

Now; their sum = 2(9) + 4(7)

Therefore, your answer is Option D.

Hope it helps...

What is the area of this triangle in the coordinate plane?

Answers

Answer:

A=25

Step-by-step explanation:

Triangle area formula: A= base x height/2

Base:12-2=10

Height:9-4=5

(10x5)/2=25

So it's 25.

15 point reward + brainliest for the CORRECT answer

Answers

Answer:

Both should be 1/6 considering the Sample Space I've drawn above.

A ramp has a horizontal distance of 10 feet and a vertical rise of 3 feet. Find the length of the ramp. Round to the nearest tenth.

I NEED THIS ASAP

Answers

13 I think ahah don’t use my answer I just need points

HELP ASAP ly!! How would I solve this??

Answers

Answer:

81/450 or 18%

Step-by-step explanation:

Since you are trying to get the probability model for the chance silver will be selected, you add up 81,117 and 252. This gets you 450denominator and since you are trying to find the probability for sliver, you put 81 in the numerator. This gets the you fraction 81/450. If you divide it, you get 0.18. Now if you are trying to make a decimal into a percent, you move the decimal point two spots to the right. So, 0.18 becomes 18%.

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