# Posts by Christian

Total # Posts: 478

**Science**

A box weighing 20lb. is being pushed up an incline. If the angle of incline was 90° to the ground, what effort would be needed to push the mass? I don't get how to get the effort if an angle was in the problem.

**Math**

A store discounted everything by 51%. The sales price of a scarf is $72.89. What was the original cost of the item?

**Math**

Dr ew does push ups every three days starting on January 3. He does sit-ups every four days starting on january 4, On which days in January will he do both push-ups and sit-ups? Use words numbers, or models to justify your answer.

**Algebra**

Violet used 1 3/4 gallons of paint on her kitchen wall.She used 4 times as much paint for her living room and bedroom walls. How much paint did Violet use for the living bedroom walls?

**Geometry**

Oh thank you I was so confused!

**Geometry**

Let B be between C and D. Solve for w CB = 4w - 4 BD = 2w - 8 CD = 24 I'm actually very confused on what to do here.

**Math**

Ivan has a 5-cent stamp, a 10-cent stamp, and a 20-cent stamp.How many different combinations of postage can he form with the stamps?

**Math**

How many different 3-digit numbers can be formed from the number 1,2 and 3 if the digits do not repeat in the numbers?

**Trig**

Cicero has a population of 6200 people and is growing at a rate of 8% per year . Mattydale has a population of 8750 and is growing at a rate of 6% per year create and equation solve the problem and in how many years to the nearest year will Cicero have a greater population ...

**Physics**

A box weighing 20lb. is being pushed up an incline. If the angle of incline was 90° to the ground, what effort would be needed to push the mass?

**Civics**

paragraph using the following words proprietary colony, royal colony, religious dissenters, puritans, and toleration.

**physics**

23. Two identical balls each have an excess charge of 5.0 x 10-7 C, and they are attached to the ceiling by light string 0.80 m long as shown in the figure below. If the angle that the threads make with respect to each other is 300, determine the force experienced by each ball...

**Math**

A family pass to the amusement park costs $54 Using the Distributive Property,write an expression that can be used to fine the cost in dollars of 8 family

**Physics**

A body is projected with an initial velocity 300m\s at an angle 60 with the vertical;determine :1.the velocity at the maximum height 2.The maximum height reached

**Discrete Math Proof Exercise**

Prove that if 3n^2+5 is odd, then n is even. Please post a detailed answer. Thank you.

**Math**

Pepper and Chee shared a pizza. Pepper ate 2/3 and chee ate 1/12 of the pizza. What fraction was left

**maths**

The bearing of two points Q and R from a points P are 030 degree and 130 degree respectively. If PQ is12cm and PR is 5cm, find QR

**Chemistry**

4.13 grams of magnesium chloride were recovered after the chemical reaction between magnesium and chlorine gas occurred. If 7.10 grams of magnesium chloride was suppose to be produced, what is the percent yield of magnesium chloride?

**math**

A rocket is fired at an angle of 18.5 ° with the ground from a point 1670 m directly behind an observer. Shortly later the rocket is observed at an angle of elevation of 33.5 ° directly in front of and above the observer. How far on a direct line has the rocket moved?

**science**

If a projectile is shot under an angle of 30* with a force of 500N what is the time the projectile reaches the maximum hight.The projectile's mass is 100g.(g=10N/kg)

**algebra**

Billy charges $15 to mow a yard. He needs at least $200 for the new bicycle that he wants. Write and solve an inequality to find out how many yards must he mow to make at least $200? A) 11 yards B) 12 yards C) 13 yards D) 14 yards

**Science**

It cause rain affect

**thermodynamics**

no answer

**Algebra**

Max is given the problem, writes two equations, solves and finds that the length is 20 feet and the width is 15 feet. What is the answer to the problem?

**Chemistry**

If 0.30 mol N2H4 is reacted with 0.50 mol N2O4, how many moles of N2 can be formed?

**Math**

Nakayla is the best girl ever I just love her so much. She is taken by me.

**Physics**

A 2-kg brick is moving at a speed of 6 m/s. how large a force F is needed to stop the brick in a time of 7x10^-4 s?

**physics**

16-g mass is moving in the +x direction at 30 cm/s while a 4-g mass is moving in the -x direction at 50 cm/s. they collide head on and stick together. find their velocity after the collision.

**Physics**

16-g mass is moving in the +x direction at 30 cm/s while a 4-g mass is moving in the -x direction at 50 cm/s. they collide head on and stick together. find their velocity after the collision.

**MATH help**

Karen buys pounds of flour. She uses 2.5 pounds to bake bread. She keeps the rest of the flour in a small storage bags. If each storage bag contains 2/5 pound of flour, how many storage bags does she use?

**algebra**

There are (35)2 ⋅ 30 leaves on a tree. What is the total number of leaves on the tree? 33 37 310 325

**algebra**

Which shows the expressions in the order they would appear on a number line from least to greatest? 17 over 9, square root of 6, square root of 15, square root of 30, 3 to the power of 3 3 to the power of 3, square root of 30, square root of 15, square root of 6, 17 over 9 3 ...

**ALGEBRA**

whats the answer can you explain

**ALGEBRA**

The amounts of e-waste generated in a region during two years were 14,200,000 tons and 10,700,000 tons. What was the total e-waste generated over these two years in the region, expressed in scientific notation? 2.49 ⋅ 107 tons 2.49 ⋅ 1014 tons 24.9 ⋅ 107 tons...

**ALGEBRA**

Which expression is equivalent to 32 ⋅ 3−5? fraction 1 over 3 to the power 3 fraction 1 over 3 to the power 7 fraction 1 over 3 to the power negative 3 fraction 1 over 3 to the power negative 7

**algebra**

HELPP

**health**

Endocrine glands ________. A. Do not have ducts to carry their product to a surface B. Do not have ducts to retain their product below surface C. Have ducts that carry their secretory product to a surface D. Have ducts to retain their secretory product below surface

**health**

What three processes does food undergo in the digestive system

**English**

Make me a sonnet that has 14 lines 10 syllables

**Physics**

I shot two arrows into the air the first arrow had a speed of 10 m/sec , 1 second later I shot the 2nd arrow into the air with a speed of 15 m/sec. Will they meet? If so, where?

**physics**

Do what Henry did, you should get -693.685 N.

**grammar**

would social studies be capitalized in this sentence: I don't understand how he did the social studies problem.

**Physic**

How far does a cyclist travel when she accelerates from rest to 6.5m/s in 22s?

**Physic**

A car accelerates from 5.0m/s to 22m/s in 18 seconds, find the acceleration.

**Physic**

If your weight on Earth is 637 Newton, what is your mass in kg?

**Physics**

A skier moves 100.0 m horizontally, and then travels another 35.0 m uphill at an angle of 35.0º above the horizontal. What is the skier's displacement from his starting point?

**Pre-Calculus**

Reflect f(x)=x^2 about the y-axis. What changes?

**personal finance**

Which type of tax is calculated on a per-item basis?

**math**

1 1/3 x 2 1/2

**Algebra 2/Trigonometry**

How do I solve f(x)=x^3-6x^2+16x-96 using Descartes' Rule of Signs to find the number of positive and negative real roots, along with imaginary roots, but not with a graph?

**math**

7 goats

**math**

7

**chemistry**

3moles KI in 500 g of H2O equals what molality?

**Pre-Calculus**

Use an Addition or Subtraction Formula to find the exact value of the expression: tan7π/12

**physics... PLEASE HELP**

22.8666666666666666666666666666667

**Physic**

What is g?

**Physic**

I need someone that can help with a formula any smart people. Law of universal gravitation f=g m 1 x m2 /r^2 needs to k ow what g is? Help?

**physics**

A metal sphere is launched with an initial velocity of 1.5 m/s as it leaves the ramp. The end of the ramp is 1.2 m above the floor. Calculate the range of the sphere.

**Chemistry Help! (Rydberg Equation)**

a) According to the Rydberg equation, the line with the shortest wavelength in the emission spectrum of atomic hydrogen is predicted to lie at a wavelength (in nm) of _____ b) According to the Rydberg equation, the longest wavelength (in nm) in the series of H-atom lines ...

**maths**

The bearing of two points Q and R from a points P are 030 degree and 130 degree respectively. If PQ = 12cm and PR=5cm, find the QR

**Algebra 1**

20 floors

**Pre-Calculus**

Find all solutions of the equation and express them in the form a + bi. 36x^2 − 12x + 2 = 0

**Pre-Calculus**

Find all zeros of the polynomial P(x)=x^3-x-6

**Accounting**

1. Compute the estimated uncollectible accounts at the end of the year using the following rates: Current 1% 1–30 days past due 3% 31–60 days past due 9% Over 60 days past due 25% 2. As of December 31, 2013, there is a credit balance of $208.20 in Allowance for ...

**Accounting**

Ultra Leather Products sells leather clothing at both wholesale and retail. The company has found that there is a higher rate of uncollectible accounts from retail credit sales than from wholesale credit sales. Ultra computes its estimated loss from uncollectible accounts at ...

**History**

Cross Out The One I Already Wrote

**History**

Choices –Choose only ONE for this section: (Social, Economic, or Political) • Include a specific piece of evidence from the “Analyze it” portion of your lesson to support your ranking of your “#1 Cost of the American Civil War.” • Include a ...

**History**

Explain in your own words why you listed this particular cost as the “#1 Cost of the American Civil War.”

**trigonometry**

To the nearest degree what is the angle formed with the ground by a 32 ft ladder if it is leaning against a wall at a height of 28 ft?

**history**

no guys it like comparing and an orange and an apple

**College Physics**

A force platform is a tool used to analyze the performance of athletes measuring the vertical force that the athlete exerts on the ground as a function of time. Starting from rest, a 60.0 kg athlete jumps down onto the platform from a height of 0.600 m. While she is in contact...

**Science**

Earth pulls downward due to gravitational force. electric current in coils produce electromagnets which repel the superconducting dimagnetic material with equal force upwards.Earth pulls downward due to gravitational force. electric current in coils produce electromagnets ...

**College Physics**

An astronaut of mass 84.0 kg is taking a space walk to work on the International Space Station. Because of a malfunction with the booster rockets on his spacesuit, he finds himself drifting away from the station with a constant speed of 0.570 m/s. With the booster rockets no ...

**College Physics**

Most of us know intuitively that in a head-on collision between a large dump truck and a subcompact car, you are better off being in the truck than in the car. Why is this? Many people imagine that the collision force exerted on the car is much greater than that experienced by...

**Physics (Help Please)**

Most of us know intuitively that in a head-on collision between a large dump truck and a subcompact car, you are better off being in the truck than in the car. Why is this? Many people imagine that the collision force exerted on the car is much greater than that experienced by...

**Physics (Help Please)**

An astronaut of mass 84.0 kg is taking a space walk to work on the International Space Station. Because of a malfunction with the booster rockets on his spacesuit, he finds himself drifting away from the station with a constant speed of 0.570 m/s. With the booster rockets no ...

**Physics (Help please)**

A force platform is a tool used to analyze the performance of athletes measuring the vertical force that the athlete exerts on the ground as a function of time. Starting from rest, a 60.0 kg athlete jumps down onto the platform from a height of 0.600 m. While she is in contact...

**math**

I am the greatest common factor of three numbers. Their sum is 36. The largest number is twice the smallest and the middle number is the mean of the other two. What are the three numbers? What number am I?

**Math**

One side of a triangular banner is 1 ½ times longer than the second side and 2 cm shorter than the third side. The perimeter of the triangle is 98 cm. How long is the shortest side?

**finance**

Texas Wildcatters Inc. (TWI) is in the business of finding and developing oil properties, and then selling the successful ones to major oil refining companies. TWI is now considering a new potential field, and its geologists have developed the following data, in thousands of ...

**social studies**

In 1846, the population of San Francisco, California, was only 200. By 1852, the city's population was 36,000. Which contributed the most to San Francisco's population change? (5 points) The Gold Rush The Mexican-American War The Monroe Doctrine The Trail ...

**Social Studies**

1.a 3.d 5.a

**Social Studies**

please help me! I need the answers! I'm desperate. PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

**Social Studies**

1.b 2.a 3.a 4.d 5.c

**LANGUAGE ARTS UGRENT!!! (Check Answers)**

1.b 2.b 3.b 4.b

**Science**

In a hypothetical experiment, the blood flow between two dogs is joined and one dog is stressed so that its heart rate goes up rapidly. What will happen to the heart rate of the second dog? a) It will remain calm because the heart rate is determined intrinsically in each heart...

**math**

i need all the answers

**math**

Help me please!

**math**

1. Which angles are adjacent angles? (1 point) ∠GBM and ∠FBC ∠CBX and ∠FBC ∠XBG and ∠FBC ∠MBY and ∠FBC 2. The measure of ∠3 is 101°. Find the measure of ∠1. (1 point) 101° 106° 74° 79° 3. Is line l...

**GEOMETRY MIDPOINT FORMULA steve how did this hapn**

hello, how did you got the ratio AB : BC = 1:3 ? Im just a little confuse, please explain briefly with the fraction, thanks.

**physics**

Heather and Matthew walk eastward with a speed of 0.76 meters per second east. If it takes them 50 minutes to walk to the store, how far have they walked? Answer in kilometers

**Math**

You are in charge of making punch for an upcoming school dance. The punch recipe makes 5 cups of punch by mixing 3 cups of cranberry juice with 2 cups of apple juice. What is the ratio of cranberry juice to apple juice?

**math**

ricegum is right for me

**Chemistry**

3,6/58,44 = 0,0616 0,0616/o,1L = 0,616 M

**math ugh.**

ohhh

**math ugh.**

but how do u get 11 / 20

**math ugh.**

at a small private collage, 9/20 of the students are female. there are 2160 female students, then how much are male?

**sociology**

Which concept is stressed by symbolic interactionists?

**sociology**

Micah is studying child behavior in playgrounds throughout the world. He wants to see how the children react when teachers select the same child to be the first to use each piece of equipment. Which approach is Micah is using?