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April 21, 2014

April 21, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**Math ~ Check 1 Answer ~**

You are welcome.
*Thursday, March 27, 2014 at 2:03pm*

**math**

a^2 + (a+1.05)^2 = 59^2 a^2 + a^2 + 2.1 a + 1.1025 = 3481 2 a^2 + 2.1 a = 3480 a^2 + 1.05 a - 1740 = 0 https://www.wolframalpha.com/input/?i=a^2+%2B+1.05+a+-+1740 a = 41.2 b = 42.2
*Thursday, March 27, 2014 at 2:03pm*

**Math ~ Check 1 Answer ~**

Thank You!
*Thursday, March 27, 2014 at 1:58pm*

**Math ~ Check 1 Answer ~**

agree
*Thursday, March 27, 2014 at 1:58pm*

**Math ~ Check 1 Answer ~**

Complete the sentence below. Scatter plots are used to look for a pattern of association, or trend, between one set of values. two sets of values******* three sets of values. four sets of values
*Thursday, March 27, 2014 at 1:57pm*

**math**

a right triangle has a hypotenuse that is 59 miles long. One side is 1.05 longer than the other. What are the lengths of the two legs
*Thursday, March 27, 2014 at 1:51pm*

**Math**

Kevin ran 4 miles more than Steve ran. The sum of their distances is 26 miles. How far did Steve run? The domain of the solution is {0, 4, 11, 22}.
*Thursday, March 27, 2014 at 12:35pm*

**math**

Math - Damon, Thursday, March 27, 2014 at 11:57am A wrong .02 * .4 = .008 B wrong .03 * .4 = .012 C wrong .05 * .2 = .01 total wrong = .03 C wrong/total wrong = .01/.03 = .33
*Thursday, March 27, 2014 at 12:02pm*

**Math**

A wrong .02 * .4 = .008 B wrong .03 * .4 = .012 C wrong .05 * .2 = .01 total wrong = .03 C wrong/total wrong = .01/.03 = .33
*Thursday, March 27, 2014 at 11:57am*

**Math**

x + 210 = 630 x = 420
*Thursday, March 27, 2014 at 11:46am*

**math**

(Weighing produce). A supermarket has three employees who package and weigh produce. Employee A records the correct weight 98% of the time. Employees B and C record the correct weight 97% and 95% of the time, respectively. Employees A, B, and C handle 40%, 40% and 20% of the ...
*Thursday, March 27, 2014 at 11:45am*

**Math**

(Weighing produce). A supermarket has three employees who package and weigh produce. Employee A records the correct weight 98% of the time. Employees B and C record the correct weight 97% and 95% of the time, respectively. Employees A, B, and C handle 40%, 40% and 20% of the ...
*Thursday, March 27, 2014 at 11:44am*

**Math**

In a marketing survey involving 1,000 randomly chosen people, it is found that 630 use brand P, 420 use brand Q, and 210 use both brands. How many people in the survey use brand P and not brand Q? Answer choices: 210 people 420 people 630 people none of these
*Thursday, March 27, 2014 at 11:37am*

**math**

Idk
*Thursday, March 27, 2014 at 11:26am*

**Math**

10
*Thursday, March 27, 2014 at 9:06am*

**Math**

I am not familiar with the notation but what happens is (x , y) --->(x , -y) so I would choose C.
*Thursday, March 27, 2014 at 8:41am*

**Math**

Write a rule in function notation to describe transformation that is a reflection across the x-axis. A. Ry-x(X,Y) B. Rx-0(X,Y) C. Rx-y(X,Y) D. Ry-0(X,Y)
*Thursday, March 27, 2014 at 8:24am*

**Math**

Butts
*Thursday, March 27, 2014 at 8:16am*

**math**

Well, let's hope we are right :)
*Thursday, March 27, 2014 at 8:12am*

**math**

Question 3 Terry invests $3,000, at 10% interest, compounded semiannually for 12 years. Use the compound interest formula to calculate the compound amount for his investment. a. $9,675.30 b. $6,760.00 c. $6,663.28 d. $9,860.00
*Thursday, March 27, 2014 at 7:57am*

**math**

So did I - thank you so much!! I have spent hours on this one and I am sure you are right.
*Thursday, March 27, 2014 at 7:57am*

**math**

surface area = 4 pi r^2 so dv/dt = 4 pi r^2 dr/dt dv/dt = 75 cm^3/s so dr/dt = 75/(4 pi r^2) when r = 5 dr/dt = 3/(4 pi) = .75/pi cm/s after 60 seconds volume = 75*60 = 4500 cm^3 (4/3)pi r^3 = 4500 pi r^3 = 3375 r = 15/pi^(1/3) r^2 = 225/pi^(2/3) 4 pi r^2 = 900 pi^(1/3) dr/dt...
*Thursday, March 27, 2014 at 7:38am*

**math**

Air is pumped into a balloon such that its volume increases at the rate of 75cm^3 per second. It is assumed that the balloon is spherical all the time. Find in term of pi the rate at which the radius of teh balloon is increasing when the radius is 5cm. Given the balloon was ...
*Thursday, March 27, 2014 at 6:33am*

**math**

If the balloon is between the stations h/x = tan45° h/(50-x) = tan60° h/tan45° = 50 - h/tan60° h = 50 - h/√3 h = 50/(1+1/√3) = 31.7 There is another answer if both stations are on the same side of the balloon.
*Thursday, March 27, 2014 at 5:47am*

**math**

There are 10 different pairs of shoes in a wardrobe. Find the probability of the event that there is at least one pair among them in choosing 4 shoes by chance. Express your answer in rational form.
*Thursday, March 27, 2014 at 2:31am*

**Math**

w=30 L=15
*Thursday, March 27, 2014 at 2:31am*

**math**

Two tracking stations 50 miles apart sight a weather ballon. The angle of the ballon from one of the stations is 45° and from the other is 60°. What is height of the balloon?
*Thursday, March 27, 2014 at 12:56am*

**Math!!!!**

thanks!!! i will ask some more later(:
*Wednesday, March 26, 2014 at 11:56pm*

**Math!!!!**

this a line with slope -1/2 which goes through (0,-3) I think that should help some, eh?
*Wednesday, March 26, 2014 at 11:52pm*

**Math**

-1 13/14 = -1.9286 -1.9 = -1.9000 -1 9/11 = -1.8181 -1.95 = -1.9500 Now just order them, recalling that for negative numbers, greater means closer to zero.
*Wednesday, March 26, 2014 at 11:51pm*

**Math!!!!**

y-(-3)= -1/2(x-(0)) How do you solve this equation and graph?????
*Wednesday, March 26, 2014 at 11:49pm*

**math**

Got it! thanks
*Wednesday, March 26, 2014 at 11:48pm*

**math**

If you mean (-8)^2 + (17 - 9)*4 + 7 = 64 + 8*4 + 7 = 103
*Wednesday, March 26, 2014 at 11:43pm*

**math**

y - 6 = .5x - 3.5 y = .5x - 3.6 + 6 y = .5x + 2.5
*Wednesday, March 26, 2014 at 11:42pm*

**math**

r + .75(s-r) Just subtract r from s and add 3/4 of that to r.
*Wednesday, March 26, 2014 at 11:42pm*

**Math**

yellow cards: 10 of 30 total so, P(y,y) = 10/30 * 9/29 = 3/29
*Wednesday, March 26, 2014 at 11:40pm*

**math**

thank you just wanted to clear it .thanks to clear my doubth
*Wednesday, March 26, 2014 at 11:10pm*

**MATH**

You're welcome, Julia. :)
*Wednesday, March 26, 2014 at 11:04pm*

**MATH**

Thank you.
*Wednesday, March 26, 2014 at 11:02pm*

**MATH**

600 times 0.14 is 84 So, 84 is 14% of 600.
*Wednesday, March 26, 2014 at 11:02pm*

**MATH**

14% of what number is 84?
*Wednesday, March 26, 2014 at 10:59pm*

**Math**

There are ten yellow 6 green 9 orange and 5 red cards in a stack of cards turned faced down once a card is selected it is not replaced what is the probability they will get two yellow cards
*Wednesday, March 26, 2014 at 10:57pm*

**Math**

6 hours and 34 minutes = 6.57 hours 324 / 6.57 = 49.3 mph
*Wednesday, March 26, 2014 at 10:52pm*

**Math**

Dominic drove 324 miles from Salt Lake City,Utah, to Bryce Canyon National Park in 6 hours and 34 minutes. What was his average speed, in miles per hour?
*Wednesday, March 26, 2014 at 10:46pm*

**math **

for the line segment whose endpoints are r(1,2) and s(6,7), find the point located 3/4 the distance from r to s.
*Wednesday, March 26, 2014 at 10:44pm*

**math 2**

Thank you so much reiny : )
*Wednesday, March 26, 2014 at 10:23pm*

**math**

So I continued working where you left off and got y=0.5x+2.5 is that correct? or is it y=0.5x-2.5? I am pretty sure that it is the first one but I just wanna make sure.
*Wednesday, March 26, 2014 at 10:22pm*

**math 2**

let E(x,y) be your point use ratios ... for the x: (x-3)/(11-3) = 3/8 8x-24 = 24 8x = 48 x = 6 for the y: (y-4)/(3-4) = 3/8 8y - 32 = -3 8y = 29 y = 29/8 E is (6,29/8)
*Wednesday, March 26, 2014 at 10:20pm*

**math**

69
*Wednesday, March 26, 2014 at 10:16pm*

**math**

slope of AB = 4/-2 = -2 so slope of new line = +1/2 new line: y-6 = (1/2)(x-7) expand and doctor it up any way you want.
*Wednesday, March 26, 2014 at 10:13pm*

**math 2**

A segment with endpoints C (3,4) and D (11,3) is divided by a point E such that CE and DE form a 3:5 ratio. Find E.
*Wednesday, March 26, 2014 at 10:08pm*

**math**

Write an equation of a line perpendicular to line AB below in slope-intercept form that passes through the point (7, 6). A (0,1) B (-2,5)
*Wednesday, March 26, 2014 at 10:05pm*

**Math**

Wow thanks! It is correct! :D
*Wednesday, March 26, 2014 at 9:46pm*

**math**

what is -8 squared +(17 - 9)x 4 + 7
*Wednesday, March 26, 2014 at 9:36pm*

**math**

yes. the equation is c = 6u^2v...solve for v sorry...thanks
*Wednesday, March 26, 2014 at 9:22pm*

**Math**

I forgot the - in the above answer that I gave. It should really be y+7=-2(x-2) y=-2x-3
*Wednesday, March 26, 2014 at 9:01pm*

**Math**

The key to perpendicular lines is that the slopes will multiply together to get negative one. Since your original slope is 0.5, your new slope will be -2. Passing through your stated points, the point-slope equation of the line will be: y-(y1)=m(x-(x1)) plug in your slope & ...
*Wednesday, March 26, 2014 at 8:59pm*

**Math**

slope of new line must be -2 so y =-2x + b plug in the given point (2,-7) -7 = -2(2) + b -3 = b y = -2x - 3
*Wednesday, March 26, 2014 at 8:55pm*

**math**

times 8 8B = 3(A-10) 8B = 3A - 30 8B+30 = 3A A = (8B+30)/3
*Wednesday, March 26, 2014 at 8:51pm*

**Math**

divide the fist equation by 2 to get y = 9x now plug that into the second: 9x - 6 = 2x 7x = 6 x = 6/7 then y = 9(6/7) = 54/7 x = 6/7 y = 54/7
*Wednesday, March 26, 2014 at 8:50pm*

**Math**

Write an equation of a line perpendicular to y=1/2x-5 in slope-intercept form that passes through the point (2, -7).
*Wednesday, March 26, 2014 at 8:46pm*

**math**

I suspect that your equation is C = 6u^2 v (usually they would not separate factors of 6 and 2 like you did, and would have C = 12uv instead) Please confirm.
*Wednesday, March 26, 2014 at 8:44pm*

**MATH VERY URRRGENT!!!!!!!!!!!!!**

lol 3 is D XD
*Wednesday, March 26, 2014 at 8:44pm*

**Math**

prob(2dimes) = (8/14)(7/13) = 4/13
*Wednesday, March 26, 2014 at 8:41pm*

**Math**

consider the equation of the circle with centre (1,2) and radius 10 Its equation is (x-1)^2 + (y-2)^2 = 100 (7, 10) satisfies that equation, (7-1)^2 + (10-2)^2 = 100 6^2 + 8^2 = 100 36+64 = 100 100=100 so it is (7,10)
*Wednesday, March 26, 2014 at 8:39pm*

**Math**

looks like a combination recursion let term(n) be the nth term, term(1) = 2 if n is odd: term(n) = 3term(n-1) if n is even: term(n)= term(n-1) - 2 so the next terms are: 26, 78, 76, 228, 226, 678 .....
*Wednesday, March 26, 2014 at 8:34pm*

**3rd grade math**

Jeff rodé his bike around a bike trail that was 1/3 of a mile long.He rode around the trail 9 times.Write a fraction greater than 1 for the distance.How many miles did Jeff ride?
*Wednesday, March 26, 2014 at 8:31pm*

**Math Word problems (3rd Grade)**

i put mushrooms on 2/8 of pizza , then i add green peppers to 5/8 of the pizza.which topping covers more of the pizza
*Wednesday, March 26, 2014 at 8:14pm*

**math**

165 / 3.75 = 44 days
*Wednesday, March 26, 2014 at 8:11pm*

**7th grade math**

(4/5) * 1450 = 5800/5 = 1160 feet
*Wednesday, March 26, 2014 at 8:09pm*

**7th grade math**

Tower A is about 1450 feet tall. Tower B is about 4/5 as tall. How tall is the B tower?
*Wednesday, March 26, 2014 at 8:00pm*

**6th Grade Math**

A drawer contains 3 blue ribbons, 4 red ribbons, and 3 green ribbons. A ribbon is randomly chosen from the drawer, replaced, and another ribbon is chosen. Find each probability"
*Wednesday, March 26, 2014 at 7:58pm*

**math**

Tessa feeds her dog 3 3/4 cups of dog food per day. If she buys a bag of food that has 165 cups how many days will the bag of dog food last?
*Wednesday, March 26, 2014 at 7:58pm*

**Math**

I don't think Damon is right. I think the answer is 3.75 years.
*Wednesday, March 26, 2014 at 7:52pm*

**Math. Help**

Your question makes no sense. Please proofread and repost. Also -- Robbert, Beth, Lisa, Cindy -- please use the same name for your posts.
*Wednesday, March 26, 2014 at 7:52pm*

**math 2**

6
*Wednesday, March 26, 2014 at 7:51pm*

**Math**

46354 miles might be the answer. I didn't say that it's right.
*Wednesday, March 26, 2014 at 7:46pm*

**math**

solve for A B=3/8(A-10)
*Wednesday, March 26, 2014 at 7:46pm*

**Math**

solve for y 2y = 18x y - 6 = 2x trying to help with homework and at a loss here.
*Wednesday, March 26, 2014 at 7:45pm*

**math**

Solve for v: C=6u2v
*Wednesday, March 26, 2014 at 7:43pm*

**Math**

1/5 * 10/3 = 10/15 = 2/3 P = 2L + 2W P = 6 2/3 + 1 1/3 = 8 inches This table must belong in a doll house.
*Wednesday, March 26, 2014 at 7:43pm*

**Math**

If Mike has 8 dimes and 6 pennies in his pocket. If he randomly selected one coin and then a second coin without replacing the first, what is the probability that both coins were dimes?
*Wednesday, March 26, 2014 at 7:41pm*

**Math. Help**

Anna's dad is replacing a table in their house. The table is currently 3 feet wide by 4 feet tall. Her dad wants to add 9 inches to the legs of the table. What is the new perimeter of the table in feet?
*Wednesday, March 26, 2014 at 7:39pm*

**Math**

(-11/5) / (-11/3) (-11/5) * (-3/11) = 33/55 = 3/5
*Wednesday, March 26, 2014 at 7:38pm*

**Math**

Use the following four coordinates to determine which one has a distance of 10 units from point C (1, 2). (3, 4) (7, 1O) (6, 7) (8, 9)
*Wednesday, March 26, 2014 at 7:37pm*

**Math**

Order from greastest to least -1 13/14 , -1.9 , -1 9/11, -1.95 show work
*Wednesday, March 26, 2014 at 7:35pm*

**Math**

The length of a table is 3 1/3 inches. The width is 1/5 of length. Find the width and perimeter of table
*Wednesday, March 26, 2014 at 7:34pm*

**Math**

-2 1/5 divided by -3 2/3. Show work also thanks (:
*Wednesday, March 26, 2014 at 7:33pm*

**math**

if you are using long division without a calculator, set the two numbers up like this 1.5/36 the 36 is inside the division sign, and the 1.5 is outside on the left. Move the decimal point on the left over acorrdingly until it is a whole number. Then move the decimal point of ...
*Wednesday, March 26, 2014 at 7:02pm*

**math**

36/1.5 = ? how to divide this
*Wednesday, March 26, 2014 at 6:56pm*

**Math**

it would be 6 times 6
*Wednesday, March 26, 2014 at 6:48pm*

**Math**

What is the pattern for 2,6,4,12,10,30,28
*Wednesday, March 26, 2014 at 6:33pm*

**Math**

prob that next one is above 75 = .6 prob that the one after that is independently .6 again so probability of both = .6*.6 = .36
*Wednesday, March 26, 2014 at 6:21pm*

**Math**

A store has found that 60% of their customers spend more than $75 each visit. What is the probability that the next two customers will spend more than $75.
*Wednesday, March 26, 2014 at 6:15pm*

**Math**

x^2 + 4x + 4 = 0 (x+2)(x+2) = 0 the two solutions are -2 and -2, so their product is 4 In fact, for any quadratic ax^2 + bx + c = 0 the product of the solutions is c/a, so you don't even need to find what the roots are.
*Wednesday, March 26, 2014 at 6:09pm*

**Math**

yes
*Wednesday, March 26, 2014 at 6:09pm*

**math**

well, 2/5+1/5 equals 3/5, leaving 2/5 lions=2/5 of 50= you do it.
*Wednesday, March 26, 2014 at 6:09pm*

**math**

(2/5) * 50 = 20 tigers (1/5) * 50 = 10 leopards sum = 30 so 50 - 30 = 20 lions
*Wednesday, March 26, 2014 at 6:09pm*

**Math**

But -3.363636 < -3.333333
*Wednesday, March 26, 2014 at 6:07pm*

**math**

There are 50 big cats in the zoo. 2/5 of them are tigers. 1/5 of them are leopards. The rest are lions. How many lions are there in the zoo?
*Wednesday, March 26, 2014 at 6:06pm*

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