Friday

August 1, 2014

August 1, 2014

Total # Posts: 70,644

**Math**

Here are 5 questions I cannot figure out 1. Is every parallelogram a square? 2.Is every rhombus a square? 3. Is every square a rhombus? 4. Is every rectangle a parallelogram? 5. Is every rectangle a rhombus? Thank you so much for answering

**MATH**

Ido not know how to do this. A jar contains 5 green erasers, 2 striped erasers, 4 pink erasers, and 3 white erasers. You select an eraser at random. What is P(not pink)? (1 point)

**Science**

Which of the following statements describes the difference between physical and chemical weathering? Chemical weathering changes the composition of a rock, while physical weathering does not.

**Science**

How is an area’s topography determined? B. By using an areas elevation relief and landforms How do Global Positioning Systems use elevation points on Earth’s system to find latitude and longitude? A. By using signals form a network of satellites How are lakes and pon...

**Science**

Which part of the ocean floor is part of the continuous underwater mountain range that circles Earth? B. Mid-ocean ridge Which of the following statements describes the difference between physical and chemical weathering? B. Physical weathering is caused by ice, while chemical...

**Science**

How is an area’s topography determined? B. By using an areas elevation relief and landforms How do Global Positioning Systems use elevation points on Earth’s system to find latitude and longitude? A. By using signals form a network of satellites How are lakes and pon...

**math**

After flying at an altitude of 9 kilometers, an airplane starts to descend when its ground distance from the landing field is 175 kilometers. To the nearest degree what is the angle of depression for this portion of the flight?

**Math**

No, its just one. On my paper it says: 16. A jar contains 120 beads a. What is the angle measure for orange. I got 144. b. How many red beans are there? On the graph it shows the angle measure is 66

**Math**

A jar contains 120 beads. b. How many red beans are there? The angle degree is 66, how would I find this out? I don't know how to.

**economics**

are there any welfare or subsidy payments that should be reviewed or added

**math**

Suppose f(x) = x^3 on the interval [1, 4]. Use the Mean Value Theorem to find all values c in the open interval (1, 4) such that f'(c)= (f(4)-f(1))/4-1 c= square root of 7 c= cubed root of 21 c = 7 Mean Value Theorem does not apply

**calculus**

Identify the open intervals) where the function f of F(x)= x√10-x^2 is increasing.

**American government **

the first news about the monica lewinsky scandal appeared: A on FM radio morning jockey shows. B on prime-time news C on CNN D through posts on the internet

**calculus**

A golf ball is hit off the top of a cliff that is 75 feet tall at an angle of 45° to the horizontal with an initial velocity of 80 feet per second. The quadratic equation shown below models the height, h(x), of the ball when it is x feet from the cliff’s edge. How far...

**Geometry**

Abcd is a parallelogram. If m<bcd = 113 , then m<dab = ?

**chemistry**

) A chemist dissolves 1.000 x 103 g of potassium hydroxide in enough water to make 1.5 L of stock solution. The chemist later wants 2.00 x 102 mL of 0.10 M potassium hydroxide. How much stock solution does the chemist need in order to make this second solution?

**Language Arts (CHECK ANSWERS)**

I believe you are correct :) Anyone else know? lol

**Physics**

A train 900'm long takes 1minute to cover a bridge of 300 m calculate its average speed

**trig length**

To secure a 610-meter radio tower against high winds, guy wires are attached to a ring on the tower. The ring is 7 meters from the top. The wires form a 69o angle with the ground. To the nearest hundredth meter find the length of the guy wire

**English**

There arent any

**English **

I need help finding quotes about haunting past in the book The Stone Carvers. Please.

**English**

What food represents bravery? (Someone who is brave)

**English**

How does Flaubert criticize the institution of family and marriage in Madame Bovary? I need to write an essay and was also wondering if these were good points to talk about. 1. Emma's childhood and the education of girls sets them up for disappointment in marriage because ...

**physics**

Find the required angular speed, ω, of an ultracentrifuge for the radial acceleration of a point 2.00cm from the axis to equal 6.00×105 g (where g is the acceleration due to gravity).

**Science**

1.How are continental glaciers different from valley glaciers? C. Continental glaciers flow in all directions as they move, while valley glaciers mice down slopes already cut by rivers 2. How does the process of plucking cause erosion D. Rocks are mixed with sediment and dropp...

**physics**

What is the maximum walking speed of an adult man whose legs are each 0.90 m long?

**general chemistry**

how to calculate molarity?

**algebra**

given the function rule f(x)=x^2-4x+3, what is the output of f(-3)

**Math**

These two box and whisker plots show the results of a science test. Plot 1: Minimum:65, Maximum:95, Median:82, 1st Quartile:67, 3rd Quartile:88 Plot 2: Minimum:57, Maximum:100, Median:92, 1st Quartile:78, 3rd Quartile:93 What does this information tell you about the results? A...

**Math**

There are 30 seniors, 15 juniors, 12 freshman, and 10 sophomores in the club. When one student is picked randomly, what is the probability that a sophomore is not chosen? 57/67?

**Math**

The probability of rolling a number less than 4 on a number cube is ____ 1/2?

**world history**

Does anyone know any songs that relate to the period of time from 600 CE to 1450 CE?

**Chemistry**

Dr bob for this question :Calculate the molar solubility of manganese II hydroxide in ph 12.85 solution. The Ksp is 2.1 x 10^-13 but I can't solve for x thanks.

**Chemistry**

The Ksp is 2.1 times 10 ^-13 But I don't know how to solve for x the answer is 4.2 times 10^-11

**Chemistry**

Calculate the molar solubility of manganese II hydroxide in ph 12.85 solution.

**Algebra**

I mean a group at my gym.

**Algebra**

So if I interviewed a group of people under 10 and interviewed all people in the group, would that meet the requirements?

**Algebra**

In this activity, you will design and conduct a survey. Select a topic for your survey. d. Are the people you surveyed representative of the group you want to study? What does D mean?

**Science 207**

3. How would the “weather” be affected if the water was at a decreased temperature? What about at an increased temperature?

**trigonometry **

A sled travels from point A at the top of a hill to Point B at the bottom. If the distance from point A to point B is 120 m and the vertical change is 50 m, find the angle of depression to the nearest degree.

**Ed Tech**

Thanks!

**Ed Tech**

Is there anything more?

**Ed Tech**

How does technology impact 21st century skills?

**algebra**

total cost=2.30+1.2m 1.30m=2.30+1.2m .10m=2.3 m=23 miles check that

**Ed Tech**

What were the tube computers of 1946-1958 used for?

**need help1 what function to use? math**

I think it is tan3=30000/l ,l =30000/tan3 theni thnk u can cntinue

**physics**

An athlete stretches a spring an extra 15.9 cm beyond its initial length. How much energy has he transferred to the spring

**statistics**

Fill in the blank in the sample below if the variables are independent in the sample like product do not like product old 10 7 young 40

**7th math**

If the actual figure is a rectangle that is 120 meters by 400 meters, what are the dimensions of a scale drawing in centimeters?

**Technology**

What are some examples of video effects, such as sepia?

**Precalculus**

Transform the quadratic equation to a standard form. 4x^2-y^2-24x-10y+11=0 My answer: 4(x-3)^2 - (y+5)^2 = 0 Therefore, this is a degenerate conic section, right?

**Precalculus **

I know I posted this already but.. I don't understand what exactly is the answer, since the answer key shows the intersection of the circle and hyperbole at (-5,0) What about (7.5,0)???? By the way the graph has one intersection point... How do you know the correct answer?...

**business communication**

I wanted to welcome you asap to our little family here in the states. Its high time we shook hands in person and not just across the sea. Im pleased as punch about getting to know you all,and I for one will do my Level best to sell you on america rewrite in hong kong english

**Technology**

What are video effects?

**Algebra 1 **

Simplify the following rational expression: 25 - x^2/x^2 -3x - 10

**Math**

Marvin was supposed to make three payments of $2000 each—the first one year ago, the second one year from now, and the third three years from now. He missed the first payment and proposes to pay $3000 today and a second amount in two years. If money can earn 4.5% compound...

**Algebra 1**

Answer: 3w+7

**Algebra 1 **

Simplify the following rational expression: 6w^2 + 11w - 7/6w - 3

**Precalculus **

Calculate solution set. x^2+4y^2=68 xy=8

**Precalculus...repost.. The tutor didn't quite answ**

Calculate the solution set. x^2+y^2+8x=-15 9x^2+25y^2=225 My work: I did elimination...multiplied -25 to the top equation and got..... -16x^2-200x-600...I then used quadratic formula ... And got -7.5 and -5..... Is -7.5 an EXTRANEOUS SOLUTION because when I plugged -7.5 in for...

**Math helpppp**

Answer

**Math **

An ordinary (fair) die is a cube with the numbers 1 through 6 on the sides (represented by painted spots). Imagine that such a die is rolled twice in succession and that the face values of the two rolls are added together. This sum is recorded as the outcome of a single trial ...

**math**

if there are 45 pieces of fruit and there are twice as many bananas as there are apples. How many of each kind of fruit are there?

**Precalculus**

Calculate the solution set. x^2+y^2+8x=-15 9x^2+25y^2=225 My work: I did elimination...multiplied -25 to the top equation and got..... -16x^2-200x-600...I then used quadratic formula ... And got -7.5 and -5..... Is -7.5 an EXTRANEOUS SOLUTION because when I plugged -7.5 in for...

**Grade 10 English**

i need 3 points of tragedy between the book the Stone carvers and the great gatsby.... i need to write a compasrion essay of tragedy between the two books. please and thank you

**maaattthhhh**

What are the mean, median, mode, and range of the data set 18, 19, 20, 21, 23, 26, 26, 26? mean = 22.4; median = 22; mode = 26 mean = 22.4; median = 26; mode = 22 mean = 26; median = 22.4; mode = 24 mean = 23.4; median = 22; mode = 26 2. Given the data 21, 13, 13, 37, 13, 23, ...

**economics**

A New Hampshire resort offers year-round activities: in winter, skiing and other cold-weather activities; and in summer, golf, tennis, and hiking. The resort’s operating costs are essentially the same in winter and summer. Management charges higher nightly rates in the wi...

**physics**

4.95 raise to power 20

**physics**

two forces of magnitude 8N making an angle of 30 and 120 with +xaxis . FInd the y component of reultant

**HELP MATH !!**

the 2nd question is a ?

**Math**

2.45?

**Math**

20. The time t required to drive a certain distance varies inversely with the speed, r. If it takes 2 hours to drive the distance at 67 miles per hour, how long will it take to drive the same distance at 55 miles per hour? a. about 1.64 hours b. about 134.00 hours c. about 2.4...

**Science**

Five groups of rats are fed identical diets except for the amount of vitamin A that they receive. Each group gets a different amount. After three weeks on the diet, the rats are weighed to see if the amount of vitamin A received has affected their weight. Independent Variable:...

**Science**

No duh. I did. How's that supposed to help me? -.-

**Science**

What about that?

**Science**

12. Justin usually blows his nose using Kleenex tissues. His snot keeps leaking through the tissue. He decided he's going to create and experiment to find out if there is something better. a. type of tissue b. Justin c. amount of tissue d. mess of the snots the tissue can ...

**Math**

2. B

**Science**

5. Justin usually blows his nose using Kleenex tissues. His snot keeps leaking through the tissue. He decided he's going to create and experiment to find out if there is something better. What is 1 constant? a. type of tissue b. Justin c. amount of tissue d. mass of snot t...

**Science**

How can you measure the angle of incidence and refraction with a protractor? If not, what are some tools I can use which are found at home?

**2 questions?**

What is the surface area of a sphere with a radius of 4 meters rounded to the nearest square meter? 50 m2 101 m2 201 m2 *** 268 m2 What is the volume of a sphere with a radius of 4 meters rounded to the nearest square meter? 67 m3 201 m3 268 m3

**Bar Graphs**

Do the bars on bar graphs need to have spacing between them or can they be right next to each other?

**Algebra**

x(yp) =

**economics**

what are welfare payments or consumer subsidies

**Physic**

The position of a mass on a spring is given by x = (7.6 cm) cos [2 π t / (0.82s)]. Where is the mass at t = 3.1 s? (Answer: 1.45cm) Answer is provided above. Please show all work on how to get the answer. Thank you.

**Math**

In this activity, you will design and conduct a survey. Choose a topic for your survey. 1. Collect your data. 2. Summarize the results with a graph and a description. When they say "Summarize the results with a graph," do they mean that I display the results with a h...

**math**

A bank wishing to determine the average amount of time a customer must wait to be served took a random sample of 100 customers and found that the mean waiting time was 7.2 minutes. Assuming that the population standard deviation is known to be 15 minutes, find the 90% confiden...

**LA**

What are some Disney movies that portray the American dream?

**Sports**

Are board games sports?

**Physic**

The maximum speed of a mass attached to a spring is vmax = 0.438 m/s, while the maximum acceleration is 1.53 m/s2. What is the maximum displacement of the mass? (Answer: 0.125m) Answer is provided above. Please show all work on how to get the answer. Thank you.

**English**

Which of these sentences has a missing antecedent? Although my sister is a swimmer, I don't know anything about it. When Trina and Rachel went to the mall, she drove.

**math**

Explain Yvonne's mistake in the following problem. 8x + 6x + 2 = 16x

**statistics**

A bottling commpany produces bottles that hold 10 ounces of liquid . Periodically, the company gets complaints that their bottles are not holding enough liquid. To test this claim, the bottling company randomly samples 25 bottles and finds the average amount of liquid held by ...

**math**

Mr chen deposits a certain amount in a bank if the interest of the bank decreased from 3.75% to 3.5% per annum mr chen's interest decrease by 50$ in a year find the sum of amount he deposits

**Math**

A stadium manager has signed five acts this year with a combined revenue projection of $1,000,050. The cost for these is expected to average $85,000 per act. How much profit margin does the stadium expect this last year?

**Algebra**

(4j^2)^2

**Algebra**

Factor 3x^2 + 2x - 13

**Statistics**

Coaching companies claim that their courses can raise the SAT scores of high school students. But students who retake the SAT without paying for coaching also usually raise their scores. A random sample of students who took the SAT twice found 427 who were coached and 2733 who...

**CHEMISTRY**

250

**Business**

Are there any similarities between the characteristics demanded of an entrepreneur and those of a professional athlete? Would an athlete be a good prospect for entrepreneurship? Why or why not? Do you agree with authors Coté and Piff that those of higher social class ha...

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