Posts by robin

Total # Posts: 432

math
32 cm = how many in

math
jill has 8 yards of cloth. she wants to cut it into pieces that are 1/4 yard long. How many pieces can she cut from the length of cloth

math
a rate of 4 centimeters per second is equal to how many meters per hour?

math
YOur family drives 126 miles from Key West to Florida mainland About 15% of this distance is spent on bridges. How many miles of bridges do you travel over?

math
20% of what number is 12

math
what percent of 126 is 22

math
in a parking lot, 16% of the cars are blue. There are 4 blue cars in the parking lot. How many cars in the parking lot are NOT blue?

math
find the whole. 125% of ___ is 25

math
On three 150point geography tests, you earned grades of 88%, 94%, and 90%. The final test is worth 250 points. What percent do you need on the final to earn 93% of the total points on all tests?

math
you make homemade lip balm. About 11% of the lip balm is made from beeswax. You make 4 2/5 teaspoons of the lip balm. About how many teaspoons of beeswax do you need?

math
150% of 66

math
write the fraction or mixed number as a percent 23/40

math
y/9=44/54

math
what is the GCF for the fraction 12/16

math
There are 22 events at an indoor track and field meet. the ratio of track events to field events is 8:3. How many of the events are track events?

math
a square has side length of 6 inches. a parallelogram has a base of 6 inches. the area of the square is equal to the area of the parallelogram what is the height of the parallelogram?

math
-8 is greater than or equal to 1.6m

math
w/6+5/8=-1 3/8

math
the expression 1/4y+3/8 factored is?

Geometry
How is constructing a perpendicular bisector similar to constructing an angle bisector? How is it different?

math
you earn 10 points for every coin you collect in a video game. Then you find a start that triples your score. Write an expression for the number of points you earn from the coins

math
the length of a rectangle is 3 meters less than twice its width. write an equation to find the length of the rectangle. the length of the rectangle is 11 meters. what is the width of the rectangle

math
-5/11h + 7/9 = 2/9

math
write the phrase as an expression... 7 more than the quotient of a number y and 5

Algebra
In a large city, taxicabs charge $4.00 for the first one-fifth mile and 0.38 for each additional one- fifth mile. Frank has only $8.50. What is the maximum distance he can travel?

Math
My nephew has a question that I'm not understanding since I haven't been in school in years it says what is 300+5,000+7+40,000+4 wrote in standard form

mat221
using the crowlings rule to determine appropriate dose of a certain medicine adult dosage is 500mg the age of the child is 7 years old what would be the correct dosage and than 300mg adult and 60 mg child to calculate childs age

Science
Don't trust KING SAVAGE!!! He's wrong if you're in connexus on Lesson 4, Unit 3! I swear!

Math 4th Grade
Thanks Damon,

Math 4th Grade
example teacher has on sheet is: 400 = 10 x h 40 =10 x 4 400 = 10 x 40 So, h = 40 so how does my grandson do this problem the same way? 280 = 2 x m This grandma has no idea. Thanks for you help.

Algebra 1
Find each value g(X) = x^2 - X g(2)^2 -2 - (2)-2 The answer key days zero but I keep getting 2 Will someone help 4-2 - (2)-2 =2 - 0 =2

Math
so the answer would be sometimes and the explanation would be a negative number would be a positive number if it was asking for its absolute value

Math
I am thinking it means negative number. So if it was asking what the absolute value of a negative number was it would always be a positive number. Correct?

Math
Is -n always, sometimes, or never a positive number? Explain. I don't know what they mean by -n - is a negative number?

8th grade math
Romita gets the sushi lunch special at Yoshi's. By using a coupon she receives $2.00 off the regular price p. Her total cost including 20 percent for tax and tip is $9.00. What is p the regular price of the lunch special?

Physics
A 50.0-kg boy runs on a horizontal surface at a speed of 10.0 m/s and jumps onto a cart just before reaching a slope as shown in the figure. The cart is initially at rest. If the mass of the cart is 150 kg, what is the maximum height h the boy/cart will reach up the slope ...

Calculus
I apologize! I forgot the prime mark after (f^-1)'(2). Thank you for catching that, you clearly know better what I ment than I did! So for clarification to compute (f^-1)'(2) if f(x) = 7x + 3cos(x) + 2sin(x), it would be 1/(-3sin(2) + 2cos(2)? That's the answer? ...

Calculus
Compute (f^-1) (2) if f(x) = 7x + 3cos(x) + 2sin(x).... We tried solving it in the form (f^-1)(a) = (1/f'(f^-1(a))... or is this a u-sub problem? We are trying to figure out whose way is right with one getting the answer as 1/2 and the other 1/10... we are getting mixed up...

Percent
Julian's measurement was 105 percent of 50 pounds and Amanda's measurement was 95 percent of 50 pounds. How many pounds off was Julian's measurement? How many pounds off was Amanda's measurement? Did they both have the same percent error?

Percent error math
Julian's measurement was 105 percent of 50 pounds and Amanda's measurement was 95 percent of 50 pounds. How many pound off were each? Do they have the same percent error? I got 5 percent error for both even though Amanda was -5

Math grade 7
The city treasury began with $1,100,000 at the beginning of the year. Each day since tax revenues have come in at a rate of 12,500 per day. Expenditures each day average 15,000 per day. The treasury now has less than1,000,000. How many days d has it been since the beginning of...

Chemistry
Ment to write that PbCl2 in the conjugate base of HCL, not HCL is the conjugate base of PbCl2.... sorry about that!

Chemistry
Explain why the solubility of PbF2 is pH dependent, but the solubility of PbCl2 is not. I know the solubility of PbF2 is pH dependent because the solubility would increase as the solution becomes more acidic because the F^- ion is the conjugate weak base of the weak acid HF. ...

Algebra
Form a third degree polynomial function with real coefficients such that -7 + i and -9 are zeros

algebra
I am thinking of two numbers whose sum is 5. If I add the second number to twice the first number, I get 2. What are the two numbers

College Algrebra
Joel can run around a 1/4 mi track in 66 sec. Jason can run around the track in 60 sec.If the runners start at the same point on the track and run in opposite directions, how long will it take the runners to cover 1/4 mile?

Physics
A car starts from rests and accelerates at a rate of 4 feet per second squared. How far does the car travel in 10 seconds?

Chemisty
object a has a specific heat of 0.568 j/[(g)(°C)] and object B has a specific heat of 1.34 J/[(g)(°C)]. which o ject A or B will heat up faster and why Is is A because it is closer to 0?

math
sarah sailed 12 miles due south from a buoy. Then she sailed 11 miles due west. How far was she from the buoy. estimate to the nearest 10th.

biology help please :)
The answer is B

Math
taylor bought some shirts for her clothing store for $12 each. She received $40 off her entire purchase and spent a total of $200. Write an equation to find the number of shirts Taylor purchased for her store.

Chemistry
Adding 1.00 g of benzene, C6H6, to 80 g of cyclohexane, C6H12, lowers the freezing point of the cyclohexane from 6.5 to 3.3 degree celsius. What is the value of kf for cyclohexane?

math
Bass: The bass in Clear Lake have weights that are normally distributed with a mean of 2.3 pounds and a standard deviation of 0.6 pounds. (a) If you catch one random bass from Clear Lake, find the probability that it weighs less than 1 pound? Round your answer to 4 decimal ...

Math
Vehicle can travel 0-60mph in 7.6 sec. From a dead stop, what is the highest rate of speed vehicle can reach and decelerate to 10mph in 500 ft distance?

St Katerina
How to find the width of a rectangular pen area of 176 meter square and 16 meter long?

math
How many pairs of integers $(b,c)$ satisfy the equation \[\frac{b + 7}{b + 4} = \frac{c}{9}?\]

MRGS SCHOOL.
State the fundamental theorem of Arithmetic.

geometry
got a parallelogram ABCD = 100 sq in. AC=2 times BD. what is CD and BD? the diagonals AC divided into AE=2x and EC =2x, diagonal BD is divided into BE=x and ED=x. I got x=1. So line AC=2x or 4x? line BD=x or 2x? so, 100 sq in 0divided by 3x or 6x. Or did I goof?

geometry
I have 2 problem that I don't know if I did it right. 1) right triangle with base=12 altitude=c, hypotenuse=d. 71 degrees is opposite 90 degrees. need to find C and d. I did tan 71=d/12. = 12 x 2.9042 = d = 34.85 Do I do the same process to get c? 2) right triangle with ...

geometry
I need d and e. Have a right triangle. Base=d; hypotenuse=e; altitude= 2sqrt3. < opposite 90 = 60.

Statistics
A random sample of 150 pumpkins is obtained and the mean circumference is found to be 45 cm. Assuming that the population standard deviation is known to be 1.8 cm, use a 0.03 significance level to test the claim that the mean circumference of all pumpkins is greater than 38 cm.

Algebra 2
A freely falling object hit the ground in 18𝑎! seconds. It fell ℎ feet. Use the formula ℎ = 16𝑡! to find ℎ in terms of 𝑎.

geometry
I sent question about rt triangle, ABC, needing to find a & b. altitude was 4, base a and hypotenuse b. You mentioned knowing another angle. There is one < A is 45 degrees. Thanks for all your help. Math is not an easy subject for me.

geometry
I tried to do this problem but the answer doesn't jive. Circle C has a radius of 13. Chord AB is 10. Find the distance from the center of the circle to chord AB which is labeled CD. I labeled CD = x. 1/2 of AB = 5. The line segment CB (13) is the same os CD (x). I tired x ...

geometry
circle E with a diameter AC and m<DAC = 62 degrees, calculate the following m<BAC arc m<AD m<ABD and m<DBC

geometry
what got sent looks like ??. I need x & y. I'll try again C | \ | \ y 9 | \ | \.D 90de< | x /\ | / \ 8 90de< B .____/______\. A 2 E 10

geometry
for Remy I need x and y. tri< ABC similar to tri< ADE th you . | \ y | \ 9 | \. 90 deg < | / \ | x/ \ | / \ 90 deg < B.__/________\. A 2 10

geometry
I have right triangles I need to solve. Can you see if I am doing them correctly or screwed up..1) Rt < is in left corner C: Opposite is 60 deg< A, last angle is at top- 30 deg <. line segment of AB is 10. Hypo is f. I got 10 0r 12.5 for answer. 2) Triangle is ABC ...

geometry
I have a triangle ADB. AD = 2, AB = 3 DB is x. I need to find x. Additional info. AB/BC = BD/BD = AD/BD. Other triangle is DCB. DB is x, DC is 8, CB is y. Booth of triangles are connect by DB. Figure resembles a kite. (Needed to complete 3/y =x/x= 2/x. Is this correct?)

geometry
I did problem but would like someone to see if I did it correctly. triangle ABC similar to ADE by AA theorem need x and y. start at B and go rt. around the 2 connected triangles BA=12; (AD 8 with rest of line =y so have ADC = 8+y; CD = 9. Line DE = x. <D = 90 deg. So have ...

geometry
I need help. One diagram backward Z, has 2|lines intersected by another line. The upper corner on left is 32 degrees. coming down intersecting line, the bottom <Z is outside corner of figure. The other figure is a triangle. Left corner = x, rt. corner =46 degrees , top ?. X...

Physics
A uniform, 274-N rod that is 2.05m long carries a 225-N weight at its right end and an unknown weight W toward the left end.When W is placed 50.3cm from the left end of the rod, the system just balances horizontally when the fulcrum is located 78.0cm from the right end. i ...

Pre-calculus
bring 3 to the other side so now ur eqn will look like sqrt(5r-9)=sqrt(r+4)+1. now square both sides. when u do this u'll eventually get 2r-7=sqrt(r+4).you must square them both again to get rid of the square root. once u do this n simplify everthing u should get 4r^2-29r+...

geometry
sorry about nos. A(-3, 2) B (5, -4).calculate midpoint. Calculate length of AB, AM, and MB. Thanks again

geometry.
use midpoint formula to calculate the midpoint of AB. Name it point M and plot it in the graph. Calculate lengths AB, AM, MB. thanks for help.

geometry
Given m<XWY = 2x+5, m<YWZ = 5x-79, and m<XWZ = 122 degrees, M<XWZ = what (X) (y) (W) (Z) connect letters x to w, w to y, and w to z. Does WY bisect <XWZ. show work please th you

algebra
I asked a question and it was answered by Steve. He had the numbers wrong. The problem should be sqrt of 18 over (sqrt of 8)-3. not sqrt of 18 -3. I got 2+sqrt of 8. Is it correct?

algebra
how do you simplify (sqrt18)over(sqrt8)-3? And (4-3sqrt2)squared? I tried but get some unreal answer. thanks in advance.

Chemistry
Titration of Na2CO3 with HCl. (pKa1(H2CO3) = 6.352, pKa2(H2CO3) = 10.329) . Calculate the pH at each of the following volumes of 0.20 M HCl added to 20.00 mL of 0.10 M Na2CO3. I figured out everything except for adding 20.00 ml of 0.20M HCL. Please help asap.

algebra
how do you simplify 3j cubed - 51j squared + 210j? I have the answer as j(j(3j-51) = 210 or is it 3j ((j squared -17j + 70)? thank you for your assistance.

Organizing, analyzing and interpreting Data (scien
the actual volume of a ligquid is 24.5 mL. which of the sets of data indicates both accuracy and precison?

Calculus
What would an example of a logarithmic function that contains a radical within it and a quotient within it where you would need to use chain rule and quotient rule to take derivative look like? How would taking the derivative of the function in its original form look different...

Calculus
What would an example of a logarithmic function that contains two trig functions within it where you would need to use chain rule and product rule to take derivative look like? How would taking the derivative of the function in its original form look different when using log ...

English 2
That aids digestion is really true.

English 2
Water that aids digestion is really true.Identify the function of the noun clause.

Math
Thank you so much Yrafaj!!! Robin

Math
No, don't think what I wrote before is correct.

Math
So if 50 is half of what Tyler had then he had 100. Grace had 3 times Tyler so that would be 300. She ate 50 so she has 250 left (and a very bad stomach ache). If this is even correct is there some algebraic way to show the work??? This is just for a 4th grader and I have no ...

Math
Can't get started on this for my granddaughter: Grace had 3 times as many berries as Tyler. After Grace eats 50 berries she has half as many berries as Tyler. How many berries does Grace have left.

math
Thanks Ms. Sue.

math
I have 23 hundreds, 47 tens, 5 ones, 8 tenths and 10 hundredths. What number am I. We got the numbers to the left of the decimal - 2775 but to the right is it .81 or .18 or .9 as 10 hundredths is the same as 1 tenth so add 8 tenths and 1 tenth together? Thanks! Robin

Math
Great thanks Rose.

Math
Of the coins in Tricia's bank, 5/7 are quarters. If Tricia has 95 quarters in her bank, how many coins does she have in all. Is this correct? 5/7*x = 95 (7/5)(5/7)*x = 95 x= 95*7/5 95x7 = 665 665/5=133 x=133 Thanks from a Grandma helping w/4th grade math

Math
40+(40+13)=93 40+53=93

Math
Thanks!

Math
At a tournament, 2 different games went on for a total of 93 mins. If 1 game took 13 mins longer than the other, how long did it take to complete each game.

pre-algebra
how do i solve -x=-7

kendriya vidyalaya
How to write 22nd November 2014 in 9 letters

Chemistry
I figured it out. I got the wrong K value too. You have to take e^-(-1.893) so e^(1.893)=6.63 From there, K=(x)/(.3-x)(.4-x) where K=6.63 Solve for x and you get 0.178 To find the values, plug in 0.178 for x to find values at equilibrium.

Chemistry
I thought you would just set up an ICE table and subtract .15 from the reactants and add .15 to the product but that is not right.

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