The product of a number and 5 is four times the sum of that number and 10. what is the number

The product of a number and 5 is four times the sum of that number and 10. what is the number

09/16/15

how can the Boardman do his job?

A Boatman is to transport a fox, a goose and a sack of corn across the river. There is room in his boat for only one of the three at a time. Furthermore, if the fox and the goose are left together,... more

If 35 have A, 50 have B, 70 have C, 20 have AB, 30 have BC, 15 have AC and 10 have ABC then how many have only A?

If 35 have A, 50 have B, 70 have C, 20 have AB, 30 have BC, 15 have AC and 10 have ABC then how many have only A?

Which measure of central tendency was given in the advertisement according to the data?

An advertisement for a speed-reading course claimed that the average reading speed for people completing the course was 1000 words per minute. Shown is the actual data for the reading speeds per... more

09/15/15

"why 85% and 30% is taken as 1/0.85 and 1/0.30 while solving numerical"

"why 85% and 30% is taken as 1/0.85 and 1/0.30 while solving numerical"

09/15/15

Find the equation of the tangent line to f(x)=1/sqrt x at x=4

Please help me 

09/14/15

Why is the answer in math way 7,-1?

(x-3)=4 The parenthesis is actually an absolute value sign. x-3=4 x=7 but how does it give you -1?

09/14/15

(v3+2v10)(4v3-v10

simplify 

09/14/15

Estimate using front end estimation

$2.32+$3.98+$0.74

twice a number is twelve more than five times the number

translate it into an equation  

A car goes 4 kilometers in 3 minutes , how far will it go in 60 minutes?

I need help and not really understand this

in a club, 11 people speak french, 15 speak spanish and 21 speak either. how many speak both?

how do i set up an equation to solve this word problem. 

09/13/15

2m+12=3m-31

I need help with doing this  

09/13/15

3.2(5x-2)-(4x+9.1)=

I am trying to help my nephew. I worked this problem and  got 1.5-4x as the simplified expression. Is this correct?

09/13/15

solve the following inequality. write the solution set in interval notation. 7(x-5)<4(2x-1). the set solution is...

Dont understand  this at all, i really  need a tutor 

09/13/15

A store is having a 60% off everything sale. What is the sales price of a scarf that costs $30.47 before the sale?

A store is having a 60% off everything sale. What is the sales price of a scarf that costs $30.47 before the sale?

Is this a permutation or combination?

The ski club with ten members is to choose three officers captain, co captain, and secretary. How many ways can these officers be filled?

09/13/15

Math Problem

A sum  of money is to be divided among Ali, Brent and Carol in the ratio 2:3:5, Carol’s share amounts to $ 1050.  Calculate (A) The total sum of money to be shared (B) Brent’s share

09/13/15

use the definition find derivative

f(x)=5+7x-3x^2   please explain how to get there

a hot ballon=on descent at rate of 221/2 feet per min. how long will it take for the balloon's elevation to change by -315?

A hot air  balloon begins its descent at a rate of 221/2 feet per minute. How long will it take for the balloon's elevation to change by -135? During another part of its flight, the balloon in... more

The perimeter P of a rectangle is given by the formula P = 2L + 2W where El is the length and W is the width. Solve the formula for L

The perimeter P of a rectangle is given by the formula P = 2L + 2W where El is the length and W is the width. Solve the formula for L   please leave in depth explanations for each step.  

09/12/15

number sequence

7, 16, 8 ,27, 9,?  

09/12/15

If E and P are energy and momentum of photon, then velocity of it will be

a)EP b)(E/P)^2 c)(E/P)^1/2 d)E/P   please explain answer is d)E/P

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