# Posts by Please help!!!

Total # Posts: 53

**Math**

Can u explain how u did it on my question

*January 10, 2017*

**Math**

Mr. Jones makes 3% commission on his sales of widgets. At a different company, Mr. Smith makes 5% commission selling the same widgets at the same price. Mr. Smith sold 500 fewer widgets than Mr. Jones, and they both earned the same commission. How many widgets did Mr. Smith sell?

*December 12, 2016*

**7th grade Pre- Algebra**

R/5 - 6 = -1 I know the answer is 25, but can you show me the steps. Thank you.

*November 26, 2016*

**physics**

A 40kg box of sweet cherries at 10 ° c cosisting of 30kg water and 10kg cherries is to be frozen at -30°c.Calculate the total amount of heat that needsto be removed from the cherries . The specific heat capacity of cherries is 3.43kj /kg°c. The specific ccapacity ...

*November 9, 2014*

**Physics**

When you suddenly stand up after lying down for a while, your body may not compensate quickly enough for the pressure changes and you might feel dizzy for a moment. (a) If the gauge pressure of the blood at your heart is 15.02 kPa and your body doesn't compensate, what ...

*March 27, 2014*

**Physics**

The bulk modulus of a liquid is 4.0 10^10 N/m2. Suppose a volume of 0.6 m3 of the liquid is taken from the surface where the pressure is approximately that of the atmosphere (1.00 10^5 N/m2) and is lowered into a pool of liquid to a depth where the pressure is 2.00 10^7 N/m2. ...

*March 25, 2014*

**Physics**

no matter how i work it out, i keep getting the wrong answers. please help!!! i only have two more submissions before it closes on me. A sample of blood is placed in a centrifuge of radius 14.0 cm. The mass of a red blood cell is 3.0 x 10^-16 kg, and the magnitude of the force...

*March 16, 2014*

**Physics**

Know matter how i work it out, i keep getting the wrong answers. please help!!! i only have two more submissions before it closes on me. A sample of blood is placed in a centrifuge of radius 14.0 cm. The mass of a red blood cell is 3.0 x 10^-16 kg, and the magnitude of the ...

*March 7, 2014*

**Physics**

Know matter how i work it out, i keep getting the wrong answers. please help!!! i only have two more submissions before it closes on me. A sample of blood is placed in a centrifuge of radius 14.0 cm. The mass of a red blood cell is 3.0 ✕ 10−16 kg, and the ...

*March 7, 2014*

**math**

Cecilia created 2.5 liters of a chemical mixture for an experiment. Saline soltution accounted for 12.5% of the mixture. How many liters of saline solution were in the mixture? a.) 0.3125 liters b.) 2.1875 liters c.) 3.125 liters d.) 31.25 liters

*February 24, 2014*

**math**

435 is 15% of what number? a.) 6.525 b.) 65.25 c.) 2,900 d.) 29,000

*February 24, 2014*

**math**

What is 38% of 560?

*February 24, 2014*

**math**

Someone please help me with this!

*January 1, 2014*

**math**

Two friends worked out on treadmills at the gym. •Alden walked 2 miles in 3/4 hour •Kira walked 1 3/4 miles in 30 minutes Who walked at a faster rate?

*January 1, 2014*

**math**

Thanx Ms.Sue :)

*January 1, 2014*

**math**

Someone please help me with is!

*January 1, 2014*

**math**

Beth plays a video game in which she starts with 0 points. In round 1, she loses 3 1/2 points. In round 2, she wins 28 1/2 points, and in round 3 she loses another 3 1/2 points. What is her final.score?

*January 1, 2014*

**math**

Lexi and Maria had $250 altogether. After Lexi spent 2 over 5 of her money and Maria spent $40, they had the same amount of money left. How much money did Lexi have in the beginning?

*November 14, 2013*

**math**

What is the percent of each number? 1. 3% of 45 2. 44% of 125 3. 95% of 64 4. 2% of 15.4 Show your work

*November 14, 2013*

**math**

If Julie bought 8 T-shirts, she would be short $28. If she bought 4 T-shirts and 3 baseball hats, she would have $17 left. If each hat cost $5, how much money did she have in the beginning

*November 7, 2013*

**MATH 11**

Yani wants to make a scale diagram of the floor plan of his school. He wants his diagram to fit on an 8.5in. by 11in. sheet of paper. The school is 650ft long and 300 ft wide at its widest point. a) what would be a reasonable scale for Yani to use so that his diagram will fit ...

*July 31, 2013*

**Algebra**

Please

*April 16, 2013*

**math**

Rationalize the Denominator of the expression. 5/ãdh

*February 18, 2013*

**math**

The rise of digital music and the improvement to the DVD format are part of the reasons why the average selling price of standalone DVD recorders will drop in the coming years. The function below gives the projected average selling price (in dollars) of standalone DVD ...

*February 13, 2013*

**physics**

A car travel at 60 km/h. It the accelerates at 3.6m/s^2 to 90km/h.how long does it take to reach a new speed. How far does it travel during acceleration...the first answer I got is 2.2s and the other question I got 47m..i was checking to see if I was correct

*January 16, 2012*

**physics**

A car traveling at 60km/h. It then accelerates at 3.6m/s^2.How long does it take to reach a new speed. How far does it travel during acceleration.

*January 16, 2012*

**Physics**

never mind... I just figured it out!

*October 11, 2011*

**Physics**

A diver stands at rest at the end of a massless diving board as shown in Figure P8.16. (a) If the mass of the diver is 161 kg, and the board is 4 m long, what is the torque due to gravity on the diving board? I was thinking that T=Frsin(theta)... but I can't seem to get it...

*October 11, 2011*

**Calculus**

please someone help me out, this question is driving me crazy!!!

*September 28, 2011*

**College Physics**

The roller coaster in Figure P6.36 starts with a velocity of 15.4 m/s. One of the riders is a small girl of mass 30 kg. Find her apparent weight when the roller coaster is at locations B and C. At these two locations, the track is circular with the radii of curvature given in ...

*September 26, 2011*

**Physics**

A baseball pitcher can throw a baseball at a velocity of 44.5 m/s. If the mass of the ball is 0.12 kg and the pitcher has it in his hand over a distance of 1.79 m, what is the average force exerted by the pitcher on the ball? Any ideas?

*September 26, 2011*

**College Physics**

When searching for gold, measurements of g can be used find regions within the Earth where the density is larger than that of normal soil. Such measurements can also be used to find regions in which the density of the Earth is smaller than normal soil; such regions might ...

*September 21, 2011*

**Chemistry**

The environmental protection agency allows 10 ppb concentration of arsenic in drinking water. What is the molarity of As in this solution?

*April 27, 2011*

**Chemistry**

The environmental protection agency allows 10 ppb concentration of arsenic in drinking water. If an 8 oz glass of water is at 10 ppb, how many ug of arsenic (As) is present? (8 oz= 236mL)

*April 27, 2011*

**Chemistry**

If a person has a BAC (blood alcohol concentration) of 0.08% v/v, would it be considered higher than the legal limit if the legal limit was 0.08 g/dL? (The density of ethanol is 0.789g/ mL)

*April 27, 2011*

**Chemistry**

How do I balance the following into an equation? 10 mL of 2.0 M HCl is react with 8 mL of 1.7 M Ca(OH)2 in a neutralization reaction.

*April 27, 2011*

**History**

I know that WWII and the holocaust are definietly completely different things I don't know about your second questions though...

*April 26, 2011*

**MATH**

Two planes leave an airport at the same time, one flying east, the other flying west.The eastbound plane travels 100 mph slower. They are 3040mi apart after 4hrs. find the speed of each plane

*January 26, 2011*

**American History**

What is the significance of providing an official charter, such as was given to Sir Walter Raleigh by Queen Elizabeth?

*January 24, 2011*

**Math**

x/4 - 3x/2 = -1/2

*January 23, 2011*

**Mat**

1/4c + 2 = 3/4 c=?

*January 23, 2011*

**Writting**

I need to write a 5-graph paragraph about either 1. A time I was dissapointed or 2. A situation that is negative but turns out positive. it doesn't have to be something that really happened in your own life. I can't think anything though so I was wondering if I could ...

*January 20, 2011*

**MATH**

Find the percent of markup. Wholesale price: $34 Selling price: $42.50

*January 19, 2011*

**MATH**

Solve for a 18= -a + 2

*January 19, 2011*

**math(algebra 1)**

i don't get these please help me: use the subtitution method to solve the linear system 1)3x+y=0 x-y=4 2)y=-3x-1 x-3y=3 3)3x-y=9 2x+y=6 4)x-2y=0 3x+y=0 Thank you!!:)

*January 18, 2011*

**MATH**

I don't understand

*January 11, 2011*

**MATH**

Greatest common factor of 4x^2y^3 and 6xy^2

*January 11, 2011*

**MATH**

how did you get 435?

*January 11, 2011*

**MATH**

Erics 4 test grades are 85, 75, 97, 93 . What must she make on her 5th test to have an average of 87?

*January 11, 2011*

**Math**

9.6 L = _____ mL

*January 11, 2011*

**MATH**

Use the formula p - 2L + 2W to find th perimimeter of the triangle Length- 8.6 m Widith- 2.5 m

*January 11, 2011*

**trig**

how do you do sinAcosA=cosA-cos^3A/sinA

*November 12, 2009*

**war on iraq**

couldi have info on how u.s. citizens in iraq are being unconstitutinal unprisoned there.

*December 18, 2007*

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