# Posts by Bob

Total # Posts: 3,229

**Algebra 2**

Use trigonometric identities to solve each equation for the given domain. sin 2θ = -cos θ for 0 ≤ θ < 2π *Anyone who has any idea which identity to use is welcome to help

*April 1, 2015*

**Math / Algebra 2**

Use trigonometric identities to solve each equation for the given domain. sin 2θ = -cos θ for 0 ≤ θ < 2π *Anyone who has any idea which identity to use is welcome to help.

*April 1, 2015*

**algebra**

The angle of elevation from the tip of the shadow to the top of the tree is 36°. Find the distance from the top of the tree to the tip of the shadow. Round the answer to the nearest tenth.

*March 30, 2015*

**math**

it doe snot say

*March 30, 2015*

**math**

An office supply company is shipping a case of wooden pencils to a store. there are 64 boxes of pencils in the case. If each of pencils weighs 2.5 ounces, what is the weight, in pounds, of the case of wooden pencils?

*March 30, 2015*

**math**

Please show your work. Tutors will not do your homework for you. Please show your work for any question that you are posting.

*March 29, 2015*

**chemistry**

dissolving 4.022 g of a salt in 100 mL of water changes temperature by -1.2^oC: what is the heat absorbed? The specific heat of water is 4.184 J/(g*C)

*March 28, 2015*

**social studies**

erfvb yu,kli...cwd

*March 24, 2015*

**Science**

thx reed :)

*March 19, 2015*

**Science**

Ok I will go back through my lesson and check #3 thx :)

*March 19, 2015*

**Science**

1. Which type of weather technology often carries cameras that can make images of Earth's surface, clouds, and snow cover? A. weather balloon B. weather satellite**** C. computer D. automated weather station 2. Why are weather forecasts more reliable now compared to ...

*March 19, 2015*

**chemistry**

0.0034 Mol of CaCl2

*March 18, 2015*

**math**

How many square yards of carpeting are needed to cover the floor of a rectangular room that is 21 ft. long and 12 ft. wide?

*March 17, 2015*

**Accounting**

E13 Selected account balances of the Lakeside Grocery Store for the year ended December 31, 20xx, follow. Beginning merchandise inventory was $ 26,000, and ending merchandise inventory is $ 22,000. Prepare closing entries, assuming that the owner of Lakeside Grocery, John ...

*March 16, 2015*

**Statistics**

Okay, but what if the maximum that each box can hold is 2?

*March 14, 2015*

**Statistics**

How many different ways can you put 3 distinguishable things in 10 boxes?

*March 14, 2015*

**SOCIAL STDIES HELP! 8th**

Connetions

*March 11, 2015*

**Chemistry**

What is the pH of a solution made by mixing equal vlumes of .10 M HC2H3O2, .1 M NaOH, and .05 M HCl?

*March 10, 2015*

**physics**

incorrect

*March 10, 2015*

**physics**

A plastic rod is rubbed against a wool shirt, thereby acquiring a charge of −4.9 µC. How many electrons are transferred from the wool shirt to the plastic rod? The elemental charge is 1.6 × 10−19 C.

*March 10, 2015*

**Art**

SORRY NUMBER TWO IS C

*March 9, 2015*

**Art**

THE ANSWER ARE NUMBER ONE IS D AND NUMBER TWO IS B

*March 9, 2015*

**Chemistry**

A .2688-g sample of a monoprotic acid neutralizes 16.4 mL of .08133 M kOH solution, calculate the molar mass of the solution? First of all how can I calculate the molar mass?

*March 5, 2015*

**math**

A rectangular tank measures 30cm by 15 cm by 20 cm. It contains water to a depth of 15 cm. How many metal cubes of edge 5 cm need to be placed in the water to raise the water level to the brim of the tank?

*March 4, 2015*

**math**

joking its good

*March 4, 2015*

**math**

check good it bad hahahaha

*March 4, 2015*

**Art Help!!! Thank you**

these are all right 100% GARANTEE

*March 3, 2015*

**math**

15 isss wronggggggg

*March 3, 2015*

**math**

none

*March 3, 2015*

**physics**

lol idk dis bull

*February 28, 2015*

**Art**

lol

*February 28, 2015*

**Science**

What is a conducter

*February 26, 2015*

**Physics 1**

192.70

*February 26, 2015*

**Science**

What are insulaters

*February 26, 2015*

**Social Studies**

OMG all right!!! thx so mush I really needed this for my grade.

*February 25, 2015*

**math**

I= (400)(0.09)(2) I= 72

*February 25, 2015*

**chemistry**

An ice cube weighing 22.7 g at a temperature of 0.0°C is added to 125 mL of water at 27.1°C in an insulated container. What will be the final temperature after the ice has melted?

*February 22, 2015*

**Geometery**

From Pyth thereom,AB =root (35^2+60^2)= 5 root(193) Height CN=AC*CB/ AB= 60*35/ 5 root(193)= 420/root(193) Now find CT Tan40 = CT/ DC But DC= 60 root 2 ( it is hyp of rt triangle ADC) CT= DC tan 40= 60 root 2 * 0.84 Angle of elevation of TN is Arc Tan(CT/CN)= Arc tan (60 root ...

*February 22, 2015*

**Geometery**

A, B, C and D are on horizontal level ground and CT is vertical pole. B is 35 m due east of C, A is 60 m South of C and D is 60 m West of A. Calculate the angle of elevation of T from N. I m really suck...plz help

*February 22, 2015*

**chemistry**

How many grams of water are required to completely hydrolyze 0.54 grams of lidocaine? What type of be equation should be used?

*February 19, 2015*

**LA**

anon is right for all except 6. 6 is C

*February 19, 2015*

**ECONOMICS**

What do YOU think?

*February 18, 2015*

**math**

Ahaha ghee

*February 11, 2015*

**Science!!!**

Is he right??

*February 11, 2015*

**Math**

in square meters plz

*February 11, 2015*

**Math**

ok so how do I solve the problem

*February 11, 2015*

**Math**

tiles cost 28 per square meter. How much will it cost to cover the countertop with new tile

*February 11, 2015*

**Math**

what is the area of the countertop in square meters

*February 11, 2015*

**Math**

A countertop is 16 feet long and 3 feet wide

*February 11, 2015*

**Chemistry**

Are you in Mr. Leingang's class?

*February 10, 2015*

**chemistry**

If the intial rate of the reaction produces 2 moles of water vapor, H2O, per second, what is the rate at which oxygen, O2, is consumed initially?

*February 10, 2015*

**Math**

its number 2 bro

*February 10, 2015*

**Calculus**

Graph the function f(x)=x+4/x Graph the secant line that passes through the points (1,5) and (8,8.5) on the same set of axes Find the number c that satisfies the conclusion of the Mean Value Theorem for f on [1,8] c= Notice that if you graph the tangent line to the point (c,f(...

*February 8, 2015*

**Math**

Hey Daisy. Plot your data points on desmos it'll help. Once plotted, this question is awfully easy.

*February 7, 2015*

**factorization**

Its 5 X 5 or 2 X 23 or 3X3X3

*February 7, 2015*

**Physics**

A stationary observer hears a sound with a frequency of 450 Hz from an approaching car. If the car emits the sound at a frequency of 360 Hz, what would be the speed of the car? (Speed of sound 340 m/s)

*February 6, 2015*

**language arts**

The speaker feels confident

*February 5, 2015*

**CHEM**

what is the mass percentage if you dissolve 0.659 mol of citric acid, C6H8O7, in 1.00 kg of water.

*February 1, 2015*

**Algebra**

Well your answer is wrong and you should use IXL it help alot.

*February 1, 2015*

**Algebra**

Tom curry apple jacks

*February 1, 2015*

**Math problems**

21

*February 1, 2015*

**physicss**

A 0.145 kg baseball pitched at 44.0 m/s is hit on a horizontal line drive straight back toward the pitcher at 52.0 m/s. If the contact time between bat and ball is 3.00 ✕ 10-3 s, calculate the average force between the ball and bat during contact.

*January 29, 2015*

**math**

Even though the x-axis is on 0, she still needs to move the y-axis either to the left or right which will change it to being on the y axis.

*January 29, 2015*

**Physics**

A spring with an unstrained length of 0.075 m and a spring constant of 2.7 N/m hangs vertically downward from the ceiling. A uniform electric field directed vertically upward fills the region containing the spring. A sphere with a mass of 4.84 10-3 kg and a net charge of +7.0...

*January 28, 2015*

**physics**

SOMEONE HELP ME PLEASE

*January 27, 2015*

**physics**

A boy on a 2.2 kg skateboard initially at rest tosses a(n) 8.4 kg jug of water in the forward direction. If the jug has a speed of 3.0 m/s relative to the ground and the boy and skateboard move in the opposite direction at 0.60 m/s, find the boy’s mass. Answer in units of kg

*January 27, 2015*

**Language Arts**

6 is deep

*January 27, 2015*

**language arts**

B A B A

*January 27, 2015*

**English**

I have to pick a topic for an argumentative research paper, but when I think about different topics I realize that all of my ideas and support on the subjects are from other people's ideas that I have read or heard. So how do I come up with original ideas for a topic ...

*January 27, 2015*

**Science**

2500

*January 26, 2015*

**Math**

Samuel and Jason 3/4 of the combined earnings from Wednesday to buy a gift. how much do they spend? Is there enough left over from Wednesday's earnings to buy a card that costs $3.25?

*January 22, 2015*

**math**

repost find unknown number in the equation 9/10 - x = 1/5

*January 21, 2015*

**math**

find unknown number in the following equation 9/10 - x +1/5 what is x

*January 21, 2015*

**math**

the wheel of a bicycle has a diameterof 72 cm and are rotating with an angular velocity of 12 rad/s. determine how much time the bicycle takes to travel 100m.

*January 21, 2015*

**Math**

First week sells 6 chairs for $80 each. Next week, if chair is not sold, it will sell for 0.85 times previous week's price. Store needs to sell 6 chairs for total of $270 to make a profit. what is the last week in which all 6 chairs could be sold so that the store makes a ...

*January 20, 2015*

**Math**

It is 79 cm

*January 15, 2015*

**calculus**

Put the lime in the coconut and shake it all up

*January 14, 2015*

**calculus**

no idea

*January 14, 2015*

**Language Arts**

B A D A B A A C D B B C D I Got 100% With these answers

*January 14, 2015*

**6th grade math**

How is it 7(x+10) = 112 @Steve Sorry,I don't get it :(

*January 8, 2015*

**6th grade math**

Sorry for the last comment,just trolling (Didn't think they will allow me to post :o). But 112 is the min. he can stay under water, so 10*7x=112?

*January 8, 2015*

**English help**

I think it's hard news article.

*January 7, 2015*

**LANGUAGE ARTS !! 8TH GRADE**

YOU ARE WRONG OMFG WHY WHY WHY WHY WHY WHYW HYW LIESSSSSSSSSSSSSSSSSSSSSSS

*January 6, 2015*

**physics**

By the way, the equation is: Fg = GM/r^2 Where G = Gravitational Constant (6.67 * 10^-11) M = Earth's mass r = Earth's radius The givens are: Earth's mass = 5.98 * 10^24 kg Earth's radius = 6.38 * 10^6 m

*January 5, 2015*

**physics**

What is the distance from the earth's center to a point where your weight would be 1/25 of what you weigh at the surface?

*January 5, 2015*

**Quick Question**

When you have to pay for something weekly, does that mean every end of the week?

*January 3, 2015*

**Chemistry**

4.2

*December 31, 2014*

**economics**

Mutual funds are attractive to small investors because (a) the funds offer a guaranteed return on investment (b) the funds are insured by an agency of the US government (c) the funds offer the opportunity to share in an investment in a variety of stocks and bonds (d) investors...

*December 21, 2014*

**P.E**

Mrs. Sue could you please help us with these answers i love to have the answers but at the most hint the answers please please pleasssseeee i reall y need a good grade on this assignment.?

*December 18, 2014*

**math**

t(n)

*December 17, 2014*

**math**

the third term of a geometric sequence is 25 and the eighth term is 25/32. find a, r, and t

*December 17, 2014*

**math**

that's dumb is there a different way to do it? with a formula?

*December 17, 2014*

**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?

*December 17, 2014*

**Stat**

Assume that a procedure yields a binomial distribution with a trial repeated n times. Use a binomial probabilities table to find the probability of x successes given the probability p of the success on a given trial N=9 X=0 p=0.30

*December 17, 2014*

**math help**

thank you !

*December 16, 2014*

**chemistry. please help drboz222**

Calculate the oxygen ppm concentration of a 3.50 kg sample of lake water that comtains 2.34 mg of dissolved oxygen

*December 16, 2014*

**P.E**

these should be the right answer let me know if they are not but im sure if you use them that you will get a hundred.

*December 16, 2014*