# Posts by Alexis

Total # Posts: 959

Math
Kevin brought 2 pens and 2 erasers for \$1.50. Lynn brought 1 pen and 1 notebook for \$1.50. Maria brought 2 notebooks for \$2.20. How much did Neal pay for 4 erasers?

Science
The coinage metals - copper, silver, and gold - are considered to be a chemical family. List three arguments to explain why. Please help!!

Math
Two events are independent P(event, then event) What is P(event)? A) a/b (A has a square root symbol) B) a/b (both have a square root symbol) C) a/b (both are squared) D) a/2b

algebra
Slope intercept form: y=mx+b. Having the equation y=3x+3 its already in slope intercept form.

Algebra
A. Mean, because there are no outliers that affect the center Am I right? I just need a yes or a no??

Algebra
A survey was taken of students in math classes to find out how many hours per day students spend on social media. The survey results for the first-, second-, and third-period classes are as follows: First period: 2, 4, 3, 1, 0, 2, 1, 3, 1, 4, 9, 2, 4, 3, 0 Second period: 3, 2...

History
Me too! :)

MATH HELP ASAP PLEASE!!!!!
Can you down size the question??

Geometry measurements
To make each costume for a play, a seamstress uses 3 yards 10 inches of fabric. How much fabric will she use to make 9 identical costumes?

Math
A muffin recipe calls for a ratio of 5 cups of flour to 2 cups of sugar. For each cup of sugar that is used, how many cups of flour are needed?

Chemistry
An unsealed 750 mL beaker contains 500 mL of very dense gas at 25.0 degrees C and 1.10 atm. The gas is much denser than the surrounding air, so it does not disperse into the air. (a) At constant pressure, what would the temperature have to reach for the gas to fill the beaker...

math
A closed cylindrical storage container with a volume of 2800 cubic inches. The material for the top and bottom will cost \$3 per square inch and the material for the sides will cost \$4 per square inch. A) What dimensions of the container would minimize the cost of manufacturing...

Math
A store marked up the cost of a dress from \$44.39 to \$91.00. What is the percent markup for this a dress? Round answer to nearest 10th.

Calculus 2
I cannot figure this out for the life of me. Maybe I am overthinking it. Money is transferred into an account at the rate of R(t)=5000t(e^-0.6t) If the account pays 2% interest compounded continuously, how much will accumulate in the account over a 9-year period?

9th grade alegbra - geometric sequence
Can you explain how to find explicit and recursive formula of geometric sequence given 2 terms? 23. a<4> = -12, a<5> = -6 ratio: -6/-12 = 1/2 explicit: a<n> = ar^(n-1) -6 = a(1/2)^4 -6 = a(0.37) -0.010 = a??? a<n> = -0.010(1/2)^n-1 recursive: a<n>...

9th grade algebra (sequences)
Can you check my homework please? Given the following representations, tell whether it's arithmetic/geometric, find the difference/ratio, find the explicit formula, find the recursive formula, and the given term. (This whole question was in the form of a table) 1. -6, 12, ...

Math
Hannah and Her Three Brothers equally split the cost of a \$379 gift for their parents how much did each sibling pay?

math algebra
Problem Page Brian rented a truck for one day. There was a base fee of \$15.99 , and there was an additional charge of 93 cents for each mile driven. Brian had to pay \$259.65 when he returned the truck. For how many miles did he drive the truck?

9th grade algebra (recursive formula)
THANKS SO MUCH! I get it now. Thanks for showing how to write notations correctly too. In the second problem, I got -13.4 for a<1> where a<21> = -1.4 and d=0.6

9th grade algebra (recursive formula)
Can you explain how to find a sub 1 in the following problem? 1. Given 2 terms in an arithmetic sequence, find the recursive formula. a sub 18 = 3362 , a sub 38 = 7362 Steps: a. Find difference: (7632 - 3362)/(38 - 18) = 4000/20 = 200 b. plug into recursive formula: a sub n = ...

Chemisty
2C2H6(g) + 7O2(g) = 4CO2(g) + 6H2O(g) How many L of oxygen gas is needed to produce 18.0 L of CO2

Megan and Catrina are at a playground swing set. Catrina pulls Megan back so that the 2.5 m long chain makes a 35? angle with the vertical. She pushes her with a speed of 6.5 m/s and Megan begins to swing forward. a) What is Megan’s fastest speed? b) How fast is Megan ...

Physics
Robert constructs the apparatus shown and slides a block down a slope that is without friction until the block reaches the section, L, of length 1.85 m, which begins at height h2 = 2.0 m on a ramp of angle 30.0°. In that section, the coefficient of kinetic friction is 0.70...

9th grade algebra (completing square)
Thanks for checking. For the ones above, they didn't match any anwers from the homework puzzle. So, I wasn't sure I was doing them correctly.

9th grade algebra (completing square)
Can you check the following? A1. (2x + 3)^2 = 25 sqrt(2x + 3)^2 = +-sqrt(25) 2x + 3 = +- 5 2x + 3 = 5, 2x + 3 = -5 2x = 2, 2x = -8 x = 1, x = -4 {-4, 1} A2. x^2 + 14x + 45 = 0 x^2 + 14x + __ = -45 + __ x^2 + 14x + 49 = -45 + 49 (x +7)^2 = 4 sqrt(x+7)^2 = +- sqrt(4) x + 7 = +- ...

Can you check the following problems? 4. x^2 - 10x +25 = 9 x^2 - 10x + (25 -9) = 9 - 9 x^2 - 10x + 16 = 0 (x - 8)(x-2) = 0 x - 8 = 0, x - 2 = 0 x = 8, x = 2 5. x^2 - 6x + 9 = 49 x^2 - 6x + ( 9 - 49) = 49 - 49 x^2 - 6x - 40 = 0 (x -10)(x + 4) = 0 x - 10 = 0, x +4 = 0 x = 10, x...

9th grade algebra (factoring)
thanks for checking!!

9th grade algebra (factoring)
Can you check the following problems? Factor the following. 1. x^2 + 9x + 18 = (x + 6)(x + 3) 8. 3x^3 - 24x^2 - 60x = 3x(x^2 - 8x - 20) = 3x(x-10)(x + 2) 9. 5x^4 - 5x^3 - 30x^2 = 5x^2(x^2 - x - 6) = 5x^2(x - 3)(x + 2) 10. 6x^2 - x - 2 = (x - 4/6)(x + 3/6) = (x -2/3) (x +1/2...

Physics
In the figure, a 6-kg box is sliding up an incline that makes an angle of theta=30 degree (with respect to the horizontal). As it slides up the incline, a kinetic frictional force fk acts on it. The acceleration of the block has magnitude 8 m/s2. Let the x+ direction point up ...

Math
What is 10 times as much as 700 will be 7,000

math
What equation is equivalent to 24=ax+4y-10, when solving for y? A: y=7/2-ax/4 B: y=17/2-ax/4 C: y=17- ax/4 D: y=34- ax

Calculus 2
A culture of bacteria is growing at the rate of 20e^0.8t cells per day, where t is the number of days since the culture was started. Suppose that the culture began with 50 cells. (a) Find a formula for the total number of cells in the culture after t days. (b) If the culture ...

9th grade Spanish 1
Thanks!

9th grade Spanish 1
Can you check my answers regarding direct object pronouns? I had to fill in a chart (D.O.P for English and Spanish and use of D.O.P with gustar and ar ending verb) and not sure about the answers. Eng....Span...DOP + gusta + infinite(ar ending verb) me.....me.....me gusta ...

Math
-I am 2 digit number. -The digit in the ones place is the first odd prime number -The digit in the tens place is three times the value of the ones place digit I am ____

science
i want to know the density of a golden nugget . the nugget i found had a mass of 120 g and took up a space of 6 mL . what is the density ?

Can you explain how to find the solutions to the following system of equation problems? Graph f(x) and g(x) to find the solution to the equation f(x) = g(x). Approximate the answer when necessary. 1. f(x) = -2/3x +4 and g(x)= x - 6 Ans: Step1 graph lines. f(x) has y-int of 4 ...

Algebra1
Hi Steve, How do you get the rate of change of 2/3 and -3/4 for problem #4?

Algebra1
Can you check my answers? 1. Table modeling a linear relationship is shown below. What is the rate of change of nails to birdhouses? 2 birdhouses to 22 nails 3 birdhouses to 33 nails 4 birdhouses to 44 nails 5 birdhouses to 55 nails a. 55 nails per birdhouse b. 2 nails per ...

Thanks! That was so much easier :).

Evaluate the following expression given the function. function: h(x)=12/x problem: h(x) = -2 solution: -2 = 12/x. 1/12 * -2 = 12/x *1/12 (mulitply both sides by 1/12 to get x by itself. -2/12 = 1/x -1/6 = 1/x (simplified -2/12) I don't think this is right. Can you explain ...

Alg 1
Ok, thanks. That was how the problem was worded.

Alg 1
1. Andy's sub-total at Chick-fil-A was \$18.79 for several sandwiches and one sweet tea for \$1.79. Write an equation. How many sandwiches did Andy buy? Not exactly sure how to solve. What i have so far which is not right: x + 1.79 = 18.79 How can i figure out how much each ...

Math
Find the coordinates of the point which is 3/5 of the way from (3, 2) to (-3, 5).

Math
Find the equation of the line through (-8, 9) with x-intercept trice the y-intercept.

Math
What is the equation of the line segment joining P(x, y) to (2, 4) and is parallel to the segment joining (-2, -1) and (6, 8).

SS
How did the Mexican-American War ignite a conflict over slavery between the North and the South?

Physics
A 50 kg student, starting from rest, slides down an 10.8 meter high water slide. How fast is he going at the bottom of the slide?

Hisyory
How are Aristotle's teachings related to the scientific method used by scientists today?

According to the article, the reader can tell that __________.Joshua Haggmark probably believes that the best way to deal with droughts is to have people conserve water.Susan Jordan probably thinks that officials are more worried than they need to be about water use during a ...

history
Can someone give me links for these please? Describe the military strategy that General William T. Sherman used across Georgia and South Carolina. Explain how the strategy affected the south, as well as how southerners reacted. Explain the purpose of reconstruction. Describe ...

math
Coach Hart calculated the mean, median, mode, and range for these data. He realized that he forgot to include Louise's 11 catches in the table. If Coach Hart now includes Louise's data with the data for the other five members, which of the following statistical ...

Statistics Range, Variance, and Standard Deviation
26. Flight Data: Find the range, variance, and standard deviation. Express answers using appropriate units, such as "minutes." Refer to Data Set 15 in Appendix B and use the times required to taxi out for takeoff. Flight 1 1 1 1 1 1 1 1 1 1 1 1 3 3 3 3 3 3 3 3 3 3 3 ...

math
Greg and Sam ordered a pizza for lunch. Greg ate 34 of the pizza, and Sam ate 18 of the pizza. How much of the whole pizza

Statistics Homework
Political Contributions: Listed below are contributions (in dollars) made to the two presidential candidates in a recent election. All contributions are from the same zip code as the author, and the data are from the Huffington Post. Do the contributions appear to favor either...

Statistics
Years to Earn Bachelor’s Degree: Listed below are the lengths of time ( in years) it took for a random sample of college students to earn bachelor’s degrees ( based on data from the U. S. National Center for Education Statistics). Based on these results, does it ...

Health
No its not anorexia you were correct its bulimia

Math
I don't know people I'm only 12

8th grade math - system of equations
Thanks so much! I understand the steps for #24. I see the mistake on #23.

8th grade math - system of equations
I'm not sure how to solve these. Solve using any method (substitution or elimination) 23. The sum of two numbers is 27. The larger number is three more than the smaller number. What are the two numbers? Ans: l = large; s = small l + s =27 and l = 3S 3s + s =27 4s =27 4s/4...

Social Studies
I think I might change it to women's suffrage. Could you find any links that would help with that.

Social Studies
7. Select one movement from the Progressive Era. Describe the movement and its impact reform on South Carolina. Provide details and examples that support how this movement changed South Carolina. I chose the civil right movement I just don't know how to describe it. I have...

Health
The answer is A, zero tolerance policy.

Math
3/6=1/2

Math
Victoria rolls a number cube numbered 1-6 three times. What is the probability that she will roll a 5 on each roll?

Math
42

Math
There are 252 seats in an auditorium.The auditorium is divided into three equal sections. How many seats are in each section?

Math
The area of a small rectangle is 1/4 square foot. The length is 2/3 foot. What is the width, in feet, of the rectangle?

8th grade lang arts
Thanks!!

8th grade lang arts
We're studying different types of sentences. I think that the example in our notes is wrong. Example#1: After the rain, I went to the park. Ans: Labeled as simple. But, I think it should be complex. There's a similar sentence that was done in class and it was labeled ...

math
whats the last two digits of 5 to the 347 power

Math
Water flows from a faucet at a rate of 5 liters every 25 saconds. How much water will flow from the faucet in 45 saconds

I'm not sure what's the correct answer: 9)Which of these characteristics can only be attributed to a wave of red light? A)The energy of the wave travels in the same direction as the wave travels. B)The wave travels by vibrating the particles of the medium at a high ...

8th grade math - 2way tables
Thanks!

8th grade math - 2way tables
Can you help with this: An 8th grade class wen to to Disney World. Out of the 181 students who went to the park, 68 visited Epcot. There were a total of 127 students who visited magic kingdom and 50 of those also visited epcot. construct a two-way table to display the ...

Solubility Graph in Excel
I've done an experiment in class (completely following the guide to the letter) of a solubility experiment (the solvents being water, cyclohexane and ethanol). The unknown solid did not dissolve in the water, dissolved in the ethanol but left it just slightly cloudy, and ...

I need to create a scatter plot using data for Old Faithful that includes waiting time between eruptions and the duration of the eruption. It's a data frame with 10 observations on 2 variables. eruptions numeric: eruption time in mins waiting numeric: waiting time to next ...

math
that's all it says. there's nothing else there

math
Estimate. 1.) A 15% tip on a \$37 bill 2.) a 19% tip on a \$53 bill 3.) a 17% tip on a \$23 bill

SS
How did the Radical Republican Reconstruction plan affect life in South Carolina? a) the law did not give African Americans equal protection b) the state regained the right to decide local matters c) white males who participated in the war were permitted to hold public office ...

qusestion
I think she asking for her mom because i guess

qusestion
I'm asking for my mom she a teacher

History
Yes D. is right

health
C is the right answer because The spirometer measures the air capacity of the lungs

Chemistry
But where did the 147.9 come from?

Chemistry
Assuming an efficiency of 46.80%, calculate the actual yield of magnesium nitrate formed from 147.9g of magnesium and excess copper(II) nitrate. Mg + Cu(NO3)2 --> Mg(NO3)2 + Cu I can't figure out how to even set this up much less solve it...

Yes the right answer is C.

Art
PLEASE HELP!!! And if you know all the answers to the lesson that would be great!!! There's 5 questions and the last one is a picture, just to make sure we are on the Same lesson. Which statement is the best comparison of the symbolism behind Chinese in the Egyptians and ...

8th grade math - Variations
Thanks. Yes, I forgot about the equation.

8th grade math - Variations
Can you check the following, please? 1. Two minutes after a skydiver opens his parachute, he has descended 1900 feet. After 5 minutes, he descended 4750 feet. If distance varies directly with the time, at what rate is skydiver descending? Ans: to find unit rate -1900/2 = 950 -...

engish
how do you unsabble RAMENAIC TIOLURVENO

Math
It takes Beth 15 minutes to walk to school, 1/2 mile away. What is her walking pace?

Help on social studies!
I found one, too! Thank you for the help. I just don't trust Wikipedia because my teachers and my parents says so. So, I don't know. But, again, thanks!

Help on social studies!
Oh, and, Wikipedia is off limits.

Help on social studies!
Hi! I was wondering if anyone could give me any websites to research on how forest, a resource, is collected and gathered. I try to look at some things, but nothing really captures what I need to type. Thank you! :) And, I really appreciate it!

Math help plz?
Its fine thank you tho! :)

Math help plz?
Yah it is

Math help plz?
Huh?

Math help plz?
6. Which inequality matches the graph? The graph is -3 -2 -1 0 1 2 3 4 and there is a red line from 1 to -3 The answer is 3x + 1 _< 4 but idk why? 19. Which inequality matches the graph? -3 -2 -1 0 1 2 3 4 and it has a red line from 2 to 4 the answer is 8p + 5 > 21 but ...

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