# Math(Please help)

183,433 results, page 92

### math

100=1.5(1.1^n - 1)/1.1-1 Could you be so nice please and help me find the solution. The answer is 22 but I have whole time different number. I use log on both sides : 100=1.5(1.1^n - 1)/1.1-1 10 = 1.5(1.1^n - 1) 10 = 1.65^n - 0.5) log 10.5 = n log 1.65 n = 0.21321 Thank you so...

### math

100=1.5((1.1^(n) - 1))/1.1-1 Could you be so nice please and help me find the solution. The answer is 22 but I have whole time different number. I use log on both sides : 100=1.5((1.1^(n) - 1))/1.1-1 10 = 1.5(1.1^(n) - 1) 10 = 1.65^n - 0.5) log 10.5 = n log 1.65 n = 0.21321 ...

### Math(Algebra)

Estimate the size of the bear population 50 bears, 1 year later 100 bears, 2 with taggs what is the estimated size of the bears can you Please wirite me the stepes so I cam understand what you did. Thank You so much foer your help.

### math show work please

a bacteria colony doubles in 7hrs. How long does it tae the colony to triple Use N=No2^t/T. where No is the intial number of bacteria and T is the time in hours it take the colony to double.

### math

Determine the value of k in y=kx^2-5x+2 that will result in the intersection of the line y=-3x+4 with the quadratic at a) two points (1 mark) b) one points (1 mark) c) no point (1 mark) Here's my work on it: kx^2-5x+2=-3x+4 kx^2-2x-2=0 a)b^2-4ac (-2^2-4(1)(-2) (-4--8) (4) Can ...

### math

Two circles have a radii of 15 and 95. If the two external tangents to the circles intersect at 60 degrees, how far apart are the centers of the circles? Can someone please explain this to me, show the work and give me the answer. Thanks!

### math

Two circles have a radii of 15 and 95. If the two external tangents to the circles intersect at 60 degrees, how far apart are the centers of the circles? Can someone please explain this to me, show the work and give me the answer. Thanks!

### Math

at a track meet with 135 participants, 25 participate in jumping event, 1/5 of these jumpers are female, and 1/3 of the the total participants are female. What is the probability that a participant chosen at random is a jumper, given that the person is a female? Please help?

### math

at a track meet with 135 participants, 25 participate in jumping event, 1/5 of these jumpers are female, and 1/3 of the the total participants are female. What is the probability that a participant chosen at random is a jumper, given that the person is a female? Please help?

### Math PLEASE HELP

1. A baker had 10 sacks containing the following amounts of flour: 4 ½ kg, 3 ¼ kg, 2 ½ kg, 2 ½ kg, 4kg, 3 ¼ kg, 4 ¼ kg, 5kg, 2 ½ kg, 3 ¼ kg 2. If the baker redistributed the flour equally among the ten bags, how much flour would be in each bag?

### math

Solve the system:4x+2y-13=0 and 3x=5y+26 by elimination. 3 (4x+2y-13=0) 12x+6y-26=0 4 (3x=5y+26) 12x=20y+104 I need to subtract since the signs are the same: 12x+6y-26=0 Since they don't match up, I'm having trouble subtracting them. I'm not sure what to do next. Please help??

### Math

Hey, I just need my answer checked. Simplify: y to the 4th power times y to the 3rd power y to the 1st power y to the 7th power ** y to the 12th power y to the 43rd power correct? If not, please show work for me. thanks.

### Math

what is the answer to the multplacation question ........... the question is what is the answer to 1,859 * 30 = Please do the multiplication -- either manually or with a calculator. Or put 1,859 * 30 in the Google search window.

### math

The width of a basketball court is 1 m more than half the length. If The area of the court is 364m^2, find the length and width. how would you solve this problem? please help me.. =)

### math again

please help me and thank you. the product of two whole numbers is 48 and their sum is less than or equal to 20.what are all the possiblities for the two whole number? again thank you for helping me :]

### Math - exponential function

Find all real numbers that satisfy (6^x)(7^(2x)) = 86, 436. Here's what I did: ln(6^x)(7^(2x)) = ln86,436 ln(6^x) + ln(7^2x) = ln86,436 x = [ln(86,436)] / [(ln(6) + (2)ln(7)] x = 2 Please correct my answer! Thanks.

### Math

I am stumped on this problem could someone please help? Give the solutions to the following quadratic equation by examining the graph of the related quadratic function: Graph: y=x^2+2x-15 Equation: x^2+2x-15=0 Thanks.

### math

Solve by elimination method. 2r-5s=-33 5r+2s=48 Solve by substitution method. 5x+6y=5 x-9y=40 I always get these two confused... can someone please help me with these two problems?? I would really appreciate it..

### math

Solve by elimination method. 2r-5s=-33 5r+2s=48 Solve by substitution method. 5x+6y=5 x-9y=40 I always get these two confused... can someone please help me with these two problems?? I would really appreciate it..

### Math

Find csc(arctanx). Okay, I know arctangent is implied that it's x/1. I drew the triangle, and I believe the hypotenuse, c, is sqrt(x^2 + 1). I get sqrt(x^2+1)/x for csc(arctanx). Is this correct? If not, please explain. Thank you!

### 3rd math

write the fact family for 2,11,and 9 ______________? ______________? _______________? ________________? I don,t understand of rule -.25 in $1.25 out $1.oo in $0.30 out $0.05 in $___ ? out $0.75 in 2.40 out _____? please help me!!

### Math(Urgent Please help)

Find the area of the parallelogram that has the vectors as adjacent sides. u = i + 2j + 2k V = i + k I know that the magnitude of the cross product results on the area. After I do the cross product then what to I do?

### math

what are all the coins? I know about the penny, dime, nickle, and quarter, but I'm not sure about the loonie and toonie. please name all the canadian coins.Thank You:)

### math

Given the linear equation y=-3/2x+1, find the y-coordinates of the points (-4), (-2), and (6). Please show all of your work. Plot those points and graph the linear equation.

### math

Given the linear equation , find the y-coordinates of the points (-6, ), (-3, ), and (3, ). Please show all of your work. Plot those points and graph the linear equation.

### Math PLEASE HELP

solving for X: 3000=8800(1+(0.025)x) I divided both sides by 8800 got 15/44= 1+0.025x subtracted each side by 1 then got -29/44=0.025x = -26.36.. Is that right?

### Math PLEASE HELP

solving for X: 3000=8800(1+(0.025)x) I divided both sides by 8800 got 15/44= 1+0.025x subtracted each side by 1 then got -29/44=0.025x = -26.36.. Is that right?

### Math PLEASE HELP

solving for X: 3000=8800(1+(0.025)x) I divided both sides by 8800 got 15/44= 1+0.025x subtracted each side by 1 then got -29/44=0.025x = -26.36.. Is that right?

### Math

Betty made 3/4 of the baskets she attempted in a basketball game. Which other ratio is equivalent to the number of baskets Betty made? A) 6/12 B) 9/12 C) 12/20 D) 18/20 Can someone explain please.

### math hw

in 1997 there were 3344 amusement parks in the u.s.. this decreased by 148 in 2002 then grew by 47 by 2008 how many amusement parks and arcades were there in 2008? please show work

### MATH

LAST YEAR BOB'S AGE WAS A SQUARE NUMBER AND NEXT YEAR IT WILL BE A CUBE NUMBER. HOW OLD IS BOB NOW ? PLEASE EXPLAIN HOW YOU WORK IT OUT ,THANKS

### math work

a dress orginally sold for $120 is now being sold for $96. by what percent was the prginal price of the dress discounted? please show work.

### Math - Please help

The population standard deviation of people who shop online is 3.1. If you want to be 75% confident that the sample mean is within 10% of the population mean, how many people must be surveyed?

### Math

The sum of the speeds of two trains is 720.5 mph. If the speed of the first train is 3.5 mph faster than the second train, find the speeds of each. Please help? Thanks!

### math

The lemonade recipe calls for 2 tablespoons or 1 ounce of food coloring for every gallon. How many cups of food coloring are there in 16 gallons of lemonade? Please help me and expalin.

### Math

9(x+2)(x+1)-2(x+2)-4(x+1)=0 I'm in the middle of solving an equation. I know that you have to FOIL but how did they get 9(x^2+3x+2)-(4x+4)=0 ? I thought you distribute the 9 through (x+2)(x+1). and why is it (4x+4) instead of (4x-4) because -4 x 1 = -4 .... Please help me ...

### math

Hal Fritz purchased a $5,000 bond at 95. The annual interest is 6%.What was the cost of the bond? What was the annual interest? What is the yield (to nearest tenth of a percent)? please help

### math

what does linear an nonlinear functions mean? I need help asap please i am begging you because i am a new student at this school and i don't get what the difference is between linear and nonlinear functions.

### math

The iength of a rectangle is 3 inches greater than its width and its area is 88 square inches.An equation that may be used to find the width w of the rectangle is a. 3w^2=88 b. w^2/3=88 c. w^2+3w-88=0 d. w^2-3w=88 e. w=29.3 please answer and explain

### Math

PLEASE HELP!!!!!! I don't understand the question! The cost (C) of photocopies is 6 cents each for first 30 and 4 cents for each one after the first 30(Use x for the total number of photocopies. Assume x> 30]

### Math Pre-Algebra

Simplify the Expression(-8/15)+(1/15). Show how to simplify in steps, using a property of operations for each step. Explain the property you use in each step. Can you help me please?

### math

How do I write one equations in slope-intercept form, and three other lines in slope-intercept form that are perpendicular to the first line ?? Please Help, Thank you =)

### math

jenny needs to make a total of 85 deliveries this week. so far she has delivered 34 of them. what percentage of her total deliveries has jenny completed? how do u figure this out please

### Math - Help!

There are two 30 degree angles. One is pointing southwest, one is pointing northeast.What are these pair of angles? A. adjacent B. complementary C. supplementary d. non of these I don't know if it is A or D, please help!

### MATH PROBABILITY

From a group of 4 women and 8 men, a delegation of 3 is selected. Find the expected number of women in the delegation. Can someone please help me find this answer?

### geometry

I need help with my math.. Can someone please help.. In the coordinate plane point X lies on line segment MN. The coordinates for MN are (-1,3) and (7,10). If the ratio of the length of MX to the length of XN is 2:5, what is the y-coordinate of point X?

### math geometry

Please help so hard. My problem... In the coordinate plane point C lies on line segment AB. The coordinates for MN are (2,4) and (16,12). If the ratio of the length of AC to the length of CB is 3:4, what is the x-coordinate of point C?

### math

If I give you $40 then the ratio of my money to yours is 4 : 5. On the other hand, if you give me $40, then the ratio is 8 : 1. How much money do both of us have? please show all steps

### Math

Topic: use function notation to evaluate equations. Evaluate the given equations for the indicated function values The questions I need help with; f(n)=5^n f(2)= f(3)= and f(n)=-n f(9)= f(-11)= Please, explain & help me :(

### Math %

Please advise how do I get the Regular % and the Cummulative % I just need one example other wise I will lose what's left of my mind. Defect Description Qty Improperly Sized 258 Bad Seam 153 Missing Buttons 67 Fabric Flaw 22 Total 500

### Math

An equation of the tangent line to the curve y=f(x)=x(4cosx−6sinx) at the point (3f(3)) is y =? Note: Please follow these instructions carefully: (a) Express f(3) and f(3) in terms of . Simplify those expressions by evaluating the exact values of sin(3) and cos(3). (b) ...

### classroom management

I need to find the meaning of the ff: terms...please help... Aspects of Classroom Teaching: 1. Approaches a. assertive b. behavior modification c. group guidance d. business academic e. group management 2. Classroom Management and Discipline please help me...thanks in a ...

### Chemistry

Please help the question that I got is: Calculate how much 95% ethyl alcohol will be required to dissolve 075g sulfanilamide at 78 degree Celsius. Knowing that solubility of sulfanilamide is 210 mg/ml at 78 degree Celsius, 14mg/ml at 0 Degree Celsius. please explain.

### math

A chartered bank is raising the interest rate on its Visa credit card from 9% to 11%. What will be the percent increase in the interest charges on a given balance? Note: Please make sure your final answer(s) are in percentage form and are accurate to 1 decimal place. For ...

### math

Sorry i could not understand log. Could you explain it in simpler terms? I am in class 7. The question was if a sum of money doubles in 8 yrs, in how many years will it triple itself?Is the answer 16? If it is please tell me how to show the workings. I understood the concept ...

### Math (Calculus AB)

For x≠0, the slope of the tangent to y=xcosx equals zero whenever: (a) tanx=-x (b) tanx=1/x (c) sinx=x (d) cosx=x Please help. I have a final tomorrow and I am working diligently to understand every type of problem that may show up on my test. Thank you very much.

### Math (Calculus AB)

For x≠0, the slope of the tangent to y=xcosx equals zero whenever: (a) tanx=-x (b) tanx=1/x (c) sinx=x (d) cosx=x Please help. I have a final tomorrow and I am working diligently to understand every type of problem that may show up on my test. Thank you very much.

### Math Word Problem

Debbie traveled by boat 5 miles upstream to fish in her favorite spot. Because of the 6-mph current, it took her 20 minutes longer to get there than to return. How fast will her boat go in still water? (Please round your answer to one decimal place.)

### math

You have a nickel, a dime, a quarter and a half dollar. A clerk shows you several items, each a different price, any one of which you could buy with your coins without receiving change. What is the largest number of articles he could have shown you? a. 8 b. 10 c. 13 d. 15 e. ...

### Math- PLEASE HELP!! I DONT GET THIS QUESTION!!

Molly bought two sweaters for $30 each and three pair of pants for $25 each. She had a 20% off coupon for her entire purchase. Model and write an expression for the amount of money Molly spent. State your answer in a complete sentence.

### science

scientists often use models to study the movement of earth and it's moon. Why do they use models to study the movements? please help pretty pretty please with cherry on top!

### Physics

A 34 g glass thermometer reads 21.6°C before it is placed in 135 mL of water. When the water and thermometer come to equilibrium, the thermometer reads 38.7°C. What was the original temperature of the water? I need help on this please could someone please help out.Thank you!

### Mathamatics

True Or False Questions: The term insurance has no value as an investment and is the least expensive type of life insurance. Liability insurance protects a homeowner against injury to other people on his property. After these my math is done. Someone please help me. Thank You.

### Math

For $4.50 a grocer buys a case of fruit which contains 14 dozen. She knows that 4 dozen will spoil before she sells them. At what price per dozen must she sell the good ones to gain 1/3 of the whole cost? is there any quick way to do this question. please respond.

### Math Word Problem

Steve's boat will go 14 miles per hour in still water. If he can go 13 miles downstream in the same amount of time as it takes to go 10 miles upstream, then what is the speed of the current? (Please round your answer to one decimal place.)

### math (4)

Sketch the graph (Do this on paper. Your teacher may ask you to turn in this graph.) and find the area of the region bounded below by the graph of the function and above by the x axis from x = 0 to x = 1. f(x) = -xe^(-x^2) Note: People have been telling me that the two lines ...

### Math median

please check my answer thanks :) find the median of following numbers 463 582 401 533 457 514 and 438 my answer is 463

### Math

Draw a pair of quadrilaterals where the 1st quad. is congruent to the 2nd quad. No side of one quad. is to be congruent to any other quad Straight out of workbook! PLEASE HELP!!!!!!!!!!!!

### Math

I have forgotten how to do ratios...Please help. The standard ratio of(number of treatments) and (total mL dose) are 3.5 to 2mL. If only 2 treatments are given, how many total mL doses are given?

### Math

I have to use the numbers....24-12-7-2 and use any combination of division subtraction multiplication and addition to come up with a final sum of 24. I have tried every combination i know of. please help

### Math

What are the odds against getting three heads in three successive flips of a coin? Odds against A = (1 – 3/6)/ (3/6)= 3/5 = 3::5 Could someone check my answer and correct me if I need it please

### math-DUE TONIGHT PLEASE HELP

A shoe store carries one brand of shoe in 3 styles, 5 sizes, and 4 colors. How many different shoes are available for this one brand?

### Math

There are 4 six-packs of soda in a case. Chris bought 1/2 of a case and gave 1/3 of what he had to Dana. How many cans of soda does Chris have left? Could you help me with this problem, please? Thanks..

### Math

Which of the following is NOT a real number? (Please explain why!) (1) -1 (I already ruled out this answers because integers can be real numbers) (2) square root of 3 (3)square root of -3 (4)0.101001000100001...

### math

a dollar bill has an area of 15.86 square inches. If a dollar bill is 2.6 inches long, how wide is it? Also, please explain how you got the answer because i am very confused.

### math

Solve. Please show all of your work. Find the length and width of a rectangular lot with a perimeter of 108 meters if the length is 8 meters more than the width.

### math

Tony and Karen are having friends over for hotdogs. Tony bought 5 bags of hot dog buns with 8 in each. Karen Bought 6 pakeges with 6 in each pakage? HELP ME PLEASE =c

### Math

Consider the rectangle with an area of 24x^3-54x^2-15x, with a side length of 6x^2-15x. Write and simplify an expression for the length of the rectangle. ^ Could someone please show me how to do this?

### math

the greater of two numbers is 1 more than twice the smaller. three times the greater exceeds 5 ties the smaller by 10. find the numbers and write the equation. please help me

### Math PLEASE HELP!!!

A contractor pours a sidewalk that is 4 inches deep, 1 yard wide, and 20 yards long. How many cubic yards of concrete will be need? (Hint: 36 inches = 1 yard)

### Math

My home work asks "what is the five number summery of a datta set? How is it used to mAke a box plot?" But i frogot what a five number summery is please help.

### math i don't get it

The lemonade recipe calls for 2 tablespoons or 1 ounce of food coloring for every gallon. How many cups of food coloring are there in 16 gallons of lemonade? Please explain this a lot so i can get this.

### math

a solid metal sphere of radius 32cm is melted down and recast to make 64 identical small spheres.what will be the radius of each small sphere?please explain ,thanks

### Math (HELP PLEASE)

Estimate the total precipitation in inches and in days for Asheville and Wichita. City: Inches: Days: ------------------------------------------ Ashevile,North Carolina |47.71|124 Wichita,Kansas |28.61|85

### Math check my answers

Please check my answers on the following questions Simplify: (X^6)^1/2 = x^3 1000000^1/6 I don't know this one (64n^12)^-1/6 = 1/0.5n^2 (9n^4)^1/2. = 3n^2 36^3/2 = my answer is 2 in the index of the aware root of 36^3 343^-4/3 I don't know this one Thanks

### math

Describe a method you can use to shorten the list of possible rational zeros when using the rational zero theorem? I know how to do the problems, I just don't know how to shorten that method. Please help me.

### Math

Find the points of intersection of the parabolas y=1/2x^2 and y=1-1/2x^2. Show that at each of these points the tangent lines to the two parabolas are similar Answer (+-1,1/2) Please show and explain all steps thank yo

### MATH

F.Y.I ~ The height is 26" The width is 26" (so the graph has a lot of square !!! ) Use your graph to predict the total number of blocks in a square with 64 SHADED blocks. Please EXPLAIN your reasoning.

### math

Please help!pam is mixing 3 1/5 batches of paint.if one batch calls for 2 3/4 tablespoons of detergent to add to the tempura powder,how many tablespoons of detergent will pam need?

### math

If the area of a circle is twice the area of a triangle whose base is 4 pi and whose altitude is 4, the radius of the circle equals a. square root 32 b. 2 c. 4 d. 8 e. 32 please answer and explain

### math

If the area of a circle is twice the area of a triangle whose base is 4 pi and whose altitude is 4, the radius of the circle equals a. square root 32 b. 2 c. 4 d. 8 e. 32 please answer and explain

### Math

Please help..not wanting answer just where to start... A cylinder has a radius of 5 centimeters and a height of 12 centimeters. What would the height of a cone need to be if it is the same volume and radius?

### math

Please solve the system with the elimination method. Explain each step as it is performed. 5y = x 2x - 3y = 7 Would the elimination method have been your first choice to solve this problem?

### math

Which expression can be used to find the area of a triangle that has a height of 7 units and a base of x units where the height stays the same but the base changes? A. 7x B. 7x/2 C. 7/2 D. x/2 I think x/2, am I correct? Please help.

### Math (PLEASE HELP!)

1. The sum of the squares of two numbers is 74 and the difference of their squares is 24. a) What system of equations models this situation? b) What are the two numbers? 2. For what value of b will the line y= -2x+b be tangent to the parabola y=3x^2+4x-1?

### MATH CHECK! 1 QUESTION

Point E is located at (-2,2) and point F is located at (4, -6). What is the distance between points E and F? A. ã52 B. ã28 C. 10 D. ã20 Please show me how it works! I don't understand this question :(

### Math

One triangle has side lengths 3,5, and 6. A similar triangle has side lengths 18, 15 and 9. Which of the following ratios is the scale factor of the triangles? A 1/6 B 1/3 C 1/5 D 2/3 The answer is given as B, but I don't understand why or how to get that. Please help.

### Math

1. The two rectangles are similar. Which is the correct proportion for corresponding sides? the two rectangles are 4 by 12 and 8 by 24. thanks! A) 12/8=24/4 B) 8/4=24/12 C) 12/4=8/24 D) 4/12=24/8 Is the answer C? I'm not quite sure about it but that's what i'm gonna go with. ...

### Math

Good evening, I posted this question this morning. The answer that someone posted was not clear. Could someone please help me with this problem? x:9=2/3:36 The answer is 0.1666 But this is what I keep getting: x/9 = (2/3)/36 x * 36/36= (2/3) * (9/1) /36 (2/3) * (9/1) /36 = 6 6...