# peter

Newest questions and responses by peter-
## Geometry

Find the value of x in the right triangle if the sides given are x, x+1 and 7.

*asked on December 8, 2018* -
## Algebra2

The function h(t) = -4.9t^2 + 49t expresses the approximate height, h, in meters, of a ball t seconds after it is launched vertically upward from the ground with an initial velocity of 49 meters per second. After approximately how many seconds will the

*asked on November 28, 2018* -
## Mathematics

formula for findin the common ratio of a G.P

*asked on November 9, 2018* -
## math

A drawing has a scale of 1/4" = 1'. A window in that drawing measures 2' x 4'. What would be the size of this window on the drawing? A. 1/2" x 1/4" B. 1" x 2" C. 1/2" x 1" D. 3/4" x 1" I think it's A. Is that correct?

*asked on October 22, 2018* -
## Chemistry

If the heat of combustion for a specific compound is -1060.0 kJ/mol and its molar mass is 58.31 g/mol, how many grams of this compound must you burn to release 589.10 kJ of heat? I don't understand even how to begin this question, so can you walk it step

*asked on October 11, 2018* -
## geometry

Suppose you have a conical shaped tent that you will use for camping. You want to ring along a tarp to fully cover the lateral area in case of inclement weather. The tent is 13 feet across and stands 8 feet high. What is the lateral area that the tarp

*asked on May 28, 2018* -
## geometry

An ice cream company manufactures and distributes ice cream cups and cones to grocery stores. The company sells the ice cream cups in packages of 12, 18, and 24 units, and the ice cream cones in packages of 14 and 21 units. Which of the following

*asked on May 28, 2018* -
## Calculus

Given power series: ∞ ∑ (2x+5)^n / n4^n n = 1 - determine the following. A. Find the center point for the series. B. Find the radius of convergence. C. Determine the interval of convergence

*asked on April 27, 2018* -
## Calculus

This might be easier to understand: Given power series: ∞ ∑ (2x+5)^n / n4^n n = 1 - determine the following. A. Find the center point for the series. B. Find the radius of convergence. C. Determine the interval of convergence

*asked on April 26, 2018* -
## calc

Given power series ∞ ∑ (2x+5)^n / n4^n, determine the following. n = 1 A. Find the center point for the series. B. Find the radius of convergence. C. Determine the interval of convergence

*asked on April 26, 2018* -
## Science

Which of these contains the most tightly packed matter particles? (1 point) A. tea B. carbon dioxide C. a milkshake D. cardboard

*asked on March 8, 2018* -
## Science

If an object is buoyant then it will (1 point) A.float. B.sink. C.attract metal. D.loses it's shape.

*asked on March 8, 2018* -
## Science

A 50.0ml of volume silver nitrate solution contains 0.0285 moles of silver nitrate, what is the molarity of silver nitrate

*asked on March 4, 2018* -
## geometry

For circle R, with point L lying on the circle, determine the circumference if RL = 34 units.

*asked on February 14, 2018* -
## Science

Moonlight is really reflected sunlight. A. true B. false I think it is false am I correct

*asked on February 12, 2018* -
## Language arts

Which other word most likely includes the root found in varieties? A. valid B. vanity C. various D. varsity

*asked on February 7, 2018* -
## Math

Eric has a riddle: "I am thinking of a fraction that is equivalent to 2 5 25 and the numerator is 18 less than the denominator." What is Eric's fraction?Explain how you know Please tell me the answer or my grade is a 50 please tell me the answer

*asked on February 6, 2018* -
## Science

Which of the following climate regions often have four seasons? A. polar B. temperate C. dry D. cool

*asked on February 3, 2018* -
## Science

Which of these is true about water vapor? A. It is water in a gas state. B. It is water in a solid state. C. It is water in a liquid state. D. It is not measurable.

*asked on February 2, 2018* -
## Social studies

Which of the following describes the Badlands millions of years ago? A. Rivers, wind, and rain carved the land. B. There were dry hills and sharp, rocky cliffs. C. Rivers flowed through a lush, green plain. D. The land was filled with jagged rocks and

*asked on February 1, 2018* -
## math

Nine more than the quotient of two and a number x.

*asked on February 1, 2018* -
## Science

Clouds that form in layers—like sheets or blankets—are called _____ clouds. A.cumulus B.cumulonimbus C.stratus D.cirrus

*asked on January 31, 2018* -
## Social studies

Which of the following describes a canal? (1 A flat-bottomed boat that carries goods B prehistoric period when Earth was covered with ice C gated part of a river that raises or lowers the water level D waterway dug across land for ships to go through

*asked on January 31, 2018* -
## Language arts draft

How do animals change in Familiar stories?

*asked on November 28, 2017* -
## Language Arts

Which of the following sentences is punctuated incorrectly? A. Oh! I didn’t know the party was tonight. B. Shreya, the birthday girl, would understand if I was late. C. In the afternoon, I stopped to pick something up from the store. D. After you left I

*asked on November 27, 2017* -
## math 11

A small clothing company manufactures two types of jackets. The first type of jacket requires 20 minutes of cutting time and 10 mins of sewing time. The second type requires 10 minutes of cutting and 15 minutes of sewing time. In one day, the company has a

*asked on November 25, 2017* -
## algebra

Jane has 3 times as many cards as peter. the average number of cards owned by the two children is 64. how many cards does jane have?

*asked on November 20, 2017* -
## Maths

A contains some red and blue balls. There are four more red than blue balls. A ball is removed at random and replaced. A second ball is removed. The probability that the two balls are different colours is 21/50. How many balls are in the box. Ans Drawing a

*asked on November 11, 2017* -
## Physics/Math

The top of the pool table is 3.05 ft from the floor. The placement of the tape is such that 0 feet aligns to the edge of the table (as shown). The winner of the competition wants to know if he has broken the world record for the break shot of 32 mph. His

*asked on November 10, 2017* -
## phaundi

a farm machine has a velocity ratio of 12 and an actual mechanical advantage of 10.calculate the work input of the machine if it raises an 80kg load by 6m

*asked on August 7, 2017* -
## Maths

Joseph is four years younger than Mary, if three times Mary’s equal four times Joseph’s age, find: a) Mary’s age b) Joseph’s age

*asked on May 23, 2017* -
## Maths

Joseph is four years younger than Mary, if three times Mary’s equals four times Joseph’s age, find: a) Mary’s age b) Joseph’s age

*asked on May 23, 2017* -
## Maxima

Hello, I'm working on a problem involving the equation v=sqrt(6*9.8(sin x-0.2 cos x)) Using maxima I have a graph but since maxima uses radians I decided to put sin and cos values multiplied by pi/180 to get degrees. So I now have a graph which looks

*asked on April 12, 2017* -
## Data

a) Calculate the probability distribution for getting doubles within the first seven rolls of a pair of standard dice. b) Use these probabilities to estimate the expected number of rolls before getting doubles. How accurate is this estimate? How do I

*asked on April 10, 2017* -
## chemistry

according to the data in the merck index,if 1,0g of aspirin is dissolved in 100ml of water at 37,how much aspirin will precipitate out of solution when it is cooled to 25.

*asked on March 18, 2017* -
## english

Who am I? I am a national builder My favourite letter is K My favourite food is Japanese

*asked on March 17, 2017* -
## Data

There are 52 white keys on a piano. The lowest key is A. The keys are designated A, B, C, D, E, F, and G in succession, and then the sequence of letters repeats, ending with a C for the highest key. a) If five notes are played simultaneously, in how many

*asked on March 5, 2017* -
## math

there were 825 pupils in a school. 52 percent were boys. more boys joined the school and the percentage of boys became 64 percent of the new total. how many boys joined the school?

*asked on February 23, 2017* -
## Data

You are making a string of coloured balloons as a decoration for the formal. If you have five green, six gold, and four white balloons, in how many ways can you arrange them along the string?

*asked on February 21, 2017* -
## Algebra

Two cars leave town at the same time going in opposite directions. One travels 44 mi/h and the other travels 47 mi/h. In how many hours will they be 69 miles apart?

*asked on February 15, 2017* -
## Physiscs

Hello, I have a doubt about inertia in a uniform bar and axis of rotation.. What's the difference between a lengthwise axis and a parallel one? In some books I have found that when we're talking about lengthwise axis that pass through the center of the bar

*asked on February 11, 2017* -
## Math

an employee is paid $3600 for the first month. she is paid an additional 1% at the end of the second month, which means a total of $3636. she continues to receive a 1% raise each month for a full year. what is her total salary at the end of the year?

*asked on January 24, 2017* -
## Math

an employee is paid $3600 for the first month. she is paid an additional 1% at the end of the second month, which means a total of $3636. she continues to receive a 1% raise each month for a full year. what is her total salary at the end of the year?

*asked on January 23, 2017* -
## math

The sum of the first 9 terms of an arithmetic series is 144, and the sum of the first 14 terms is 329. Find the first 4 terms of the series.

*asked on January 23, 2017* -
## Chemistry

1) What volume of oxygen gas at 28 Celsius and 102 kPa is needed to react completely with 150 g of iron according to the following reaction. Fe(s) + O2 (g) FeO(s) 2) A bunsen burner is lit in a lab that at 24.7 Celcius and 1.07 atm. What mass of water is

*asked on January 22, 2017* -
## Math

On his 12th birthday Enoch's grandparent's deposited $25 into a savings account for him. Each month after that up to and including his 20th birthday, they deposit $10 more than the previous month. How much money will Enoch have on his 20th birthday,

*asked on January 19, 2017* -
## Accounting

What equation was used to get the answer in requirement 3? Consulting to control costs. Requirement 1. Compute Draper's predetermined overhead (OH) allocation rate for 2018. Estimated OH costs / Estimated direct labor costs = Predetermined OH allocation

*asked on January 15, 2017* -
## Math

Help me Bobpursley is dumb Serge invests $700 at 5.75% per year, compounded quarterly. When the account is closed, its value will be $950. How long will Serge’s money be invested?

*asked on January 13, 2017* -
## Math

Serge invests $700 at 5.75% per year, compounded quarterly. When the account is closed, its value will be $950. How long will Serge’s money be invested?

*asked on January 13, 2017* -
## Math

Angelica ran in a half-marathon. The length of the race was 21.1 km. She ran 1700 m in the first 10 min of the race. In each 10-min interval after the first one, her distance decreased by 4%. How far did she run in the tenth 10-min interval?

*asked on January 11, 2017* -
## Physics

An alloy of iron and silver has a total mass of 30 grams and a volume of 20.4 centimetre cube Calculate the mass of iron only and the volume silver only Please help

*asked on January 7, 2017* -
## Math

3. At the end of a dock, high tide of 14 m is recorded at 9:00 a.m. Low tide of 6 m is recorded at 3:00 p.m. A sinusoidal function can model the water depth versus time. a) Construct a model for the water depth using a cosine function, where time is

*asked on December 18, 2016* -
## Science

I can dispense 300 liters of liquid continuously in one hour from a given temp. of 22*c down to 7*c. (delta T=15) How many liters and in what time can I dispense from a temp. of 24*c down to 3*c ? (delia T=21)

*asked on December 7, 2016* -
## Math

A support wire to the top of a newly planted tree is 15 m long. It forms an angle of 30 degrees to the ground. On the same side of the tree, a second wire is also attached to the top of the tree, but it makes an angle of 45 degrees to the ground. Determine

*asked on December 6, 2016* -
## Gauss-Jordan elimination

[1 1 1|7] [1-1-1|1] [1-1-]|3]

*asked on November 22, 2016* -
## Math

5/9 ,7/18 and 1/2 arranged from the smallest to the largest

*asked on October 16, 2016* -
## Probability-Cards

As shown above, a classic deck of cards is made up of 52 cards, 26 are black, 26 are red. Each color is split into two suits of 13 cards each (clubs and spades are black and hearts and diamonds are red). Each suit is split into 13 individual cards (Ace,

*asked on October 8, 2016* -
## CHE 111-03L

The following system is at equilibrium: 2X(s)+4Y(g)⇌Z(g) Classify each of the following actions by whether it causes a leftward shift, a rightward shift, or no shift in the direction of the net reaction. Half the Volume Remove Some X Double the Volume

*asked on October 2, 2016* -
## Math

Write and expression that has a value of 100 and the following restrictions: 1. Uses each of the four operations at most once 2. Uses no parentheses 3. Use only the digit 3

*asked on September 8, 2016* -
## Art Study

What does the expression of this superhero mean? Which of the following steps of art critique are you conducting for this type of question? describe analyze present interpret I think B?

*asked on August 25, 2016* -
## math

Mr. Vasil drove 405 miles on 15 gallons of gas. How many miles can he drive on 1 gallon?

*asked on August 23, 2016* -
## Math

Denise bought some lace to sew around 3 square pillows. Each pillow measured 4 incheson each side. How many feet of lace did denise need for all 3 sides?

*asked on August 19, 2016* -
## Science

Explain the measures toreduce the problems associated with mining and extraction of metal

*asked on August 3, 2016* -
## statistics

A jar contains 2 red balls, 2 blue balls, 2 green balls and 1 orange ball. Balls are randomly selected, without replacement, until 2 of the same colour are obtained. Calculate the probability that more than 3 balls must be selected.

*asked on July 2, 2016* -
## math

find the number that is twelve and a quarter times greater than its reciprocal

*asked on June 29, 2016* -
## CALCULUS

State the intercepts, domain and range for y= |0.5x^2-2|.

*asked on June 21, 2016* -
## science

percentage of water of crystallization in Fe(NO3)2

*asked on June 14, 2016* -
## algebra 1

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

*asked on June 2, 2016* -
## Algebra 1

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

*asked on June 2, 2016* -
## Calculus

An observer 150 feet from point C, where a weather balloon has been released. The balloon rises vertically at a rate of 8ft/sec/. At the very instant the balloon is 250 above ground how far is it from the observer? How Quickly is it moving away from the

*asked on May 19, 2016* -
## PHYSICS

A 6.00g bullet is fired horizontally into a 1.50kg wooden block resting on a horizontal surface. The coefficient of kinetic friction between block and surface is .30. the bullet remains embedded in the block, which is oserved to slide .25m along the

*asked on May 10, 2016* -
## Math

An object's velocity after t seconds is v(t)= 38-2t feet per second. a. How many seconds does it take for the object to come to a stop (velocity = 0)? b. How far does the car travel during that time? c. How many seconds does it take the car to travel half

*asked on April 30, 2016* -
## Math

Can you define the variable, four more than a number divided by 2 is ten.

*asked on April 23, 2016* -
## Physics

A girl standing on a stationary uniform plank 10m long. The plank can move with negligible friction along the surface of the water. A) the girl walks along the plank with a velocity of 2ms-1 relative to the plank until she reaches the end of the plank. The

*asked on April 7, 2016* -
## Physics

The activity of a sample of 31Si (T1/2 = 9.43×103 s) is 7.88×105 decays per second. What is the mass of sample present?

*asked on March 27, 2016* -
## maths

A vehicle travels equal distances at 60km/h and 90km/h.calculate its average speed

*asked on March 21, 2016* -
## algebra 1

Given the data set (5, 9), (13, 12), (23, 16), which of the following equations best represents a line of best fit? y = three fourthsx − 7 y = four fifthsx + 7 *** y = three over twox + 7 y = two thirdsx − 7

*asked on March 21, 2016* -
## Math

Determine whether or not the given linear transformation is invertible. If it is invertible, compute its inverse. (If the transformation is not invertible, enter IMPOSSIBLE. Use theta for θ.) Tθ:R2→R2, the reflection of the plane in the line formed by

*asked on March 11, 2016* -
## Linear Algebra

Find the 3x4 matrix associated with the derivative transformation D:P3→P2 with respect to B = { 1, x, x2, x3} and B' = {1, x, x2}.

*asked on March 11, 2016* -
## Pigskin geography week number 20

Which team will visit a city within its own state for a game

*asked on February 23, 2016* -
## Math

A clock starts at 12:59. What time is it after the minute hand rotates 24 degrees?

*asked on February 19, 2016* -
## Physics

A uniform electric field with a magnitude of 6100 V m−1 points in the positive x direction. Find the change in electric potential energy when a +14 μC charge is moved 5 cm in the positive x direction. Answer in joules.

*asked on February 5, 2016* -
## Auburn

How do you write 234,567 in roman numeral's

*asked on February 4, 2016* -
## Math

The cost of fencing a square field at ₹ 27.50 per metre is ₹55000 . Find the cost of reaping the field at ₹45 per 100 metre² .

*asked on January 29, 2016* -
## Geography,maths literecy,life-science,agriculture,LO,sepedi and english

Which career can suit me?

*asked on January 13, 2016* -
## Math

Rafi had a board that was 15 1/2 FEET long he cut three pieces off the board that are each 3 and 7/8 feet long how much of the board is left

*asked on January 13, 2016* -
## physics

A clown is rocking on a rocking chair in the dark. His glowing red nose moves back and forth a distance of 0.42m exactly 30 times a minute in a simple harmonic motion. (a) what is the amplitude of this motion? (b) what is the period of this motion? (c)

*asked on December 12, 2015* -
## physics

How much would the time keeping of a pendulum clock be affected by taking it to the moon? Gravity is 1.6m/s ^2, compared with 10m/s ^2 on the earth.

*asked on December 12, 2015* -
## physics

What force is required to slide a 200 kg box up a 25 degree incline if the coefficient of friction is 0.60?

*asked on November 25, 2015* -
## math

six years ago, jim was four times as old as Fe. In four years, he would be twice as old as fe.How old are they now?

*asked on November 24, 2015* -
## Physics

The interior of a submarine located at a depth of 50 m in seawater is maintained at sea-level atmospheric pressure. Find the force acting on a window 20 cm square. The density of seawater is 1.03 × 103 kg/m3

*asked on November 16, 2015* -
## swagodimo

Calculate the number of moles of hcl(aq)added to sodium thiosulphate

*asked on November 15, 2015* -
## Physics

If the specific heat of ice is 0.5 cal/g degree celsius, how much heat must be released from 5 g of water at 0 degree celsius to change it to ice at -4 degree celsius?

*asked on November 15, 2015* -
## Algebra

2. X - 7 > 10 X > ____ 3. 3x ≤ 21 X ≤ ____ 4.5a - 2 < 18 A

*asked on October 28, 2015* -
## Physics

A gun shoots a bullet at 1200 m/s at an angle of 600 above the horizontal. Neglecting air resistance, determine: a.) its time of flight b.) its range

*asked on October 8, 2015* -
## Algebra

Rewrite the set {x|2Ex

*asked on October 5, 2015* -
## Ochem

Write the equation for the reaction that occurs when sodium carbonate is added to the mixture of the reaction and water (hint: a gas is evolved). This is for benzocaine experiment

*asked on October 4, 2015* -
## Organic Chemistry

Write the equation for the reaction that occurs when sodium carbonate is added to the mixture of the reaction and water (hint: a gas is evolved). This is for benzocaine experiment

*asked on October 4, 2015* -
## Organic Chem 2

Write the equation for the reaction that occurs when sodium carbonate is added to the mixture of the reaction and water (hint: a gas is evolved). This is for benzocaine experiment

*asked on October 4, 2015* -
## Algebra

How do I turn this into a algebraic expression, eight more than six times a number added to one more than nine times the number

*asked on September 24, 2015*