Answers created by Pallu

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• How do you solve the following system: `x-3y=20 , -6x + 5y = 4`?
  
• If `x+2y= -5 and x= 7/6`, determine the value of `y` ?
  
• How do you solve the equation `3x - 9 = 48`?
  
• How to solve (49x^2)^3/2 ÷ (9y^4)^3/2?
  
• If x2-8x-1=0 then prove that x2+1/x2 ?
  
• Write a system of equations to represent this problem and determine the unit price of each item purchased? Define your variables.
  
• How do you solve `8x^2-5=-4x`?
  
• How do you rewrite `140^(1/8)` in radical form?
  
• The copier company supplies 16 reams of paper for $55.84. What is the price per ream?
  
• How do you solve `xy - 3x = 40`; `x= 5`?
  
• Eleven is equal to the quotient of seven and a number. What is the number?
  
• How do you solve `m- 5- 3= 20`?
  
• How do you factor `2x ^ { 2} - 5a x + 2a ^ { 2}`?
  
• Two-fifths of photographs are black and white. The rest of the photographs are color. What is the ratio of black and white to color photographs?
  
• The product of two numbers is 1,360. The difference of the two numbers is 6. What are the two numbers?
  
• 3/8 of a circle is coloured red. I cannot remember what colours the rest of the circle was. What might the circle look like? Thanks
  
• If y varies directly as x and y=3 when x= 2, find y when x=8?
  
• How do you solve `4( 6+ x ) + 2x = 33`?
  
• Solve ?7x-3(4+x)=28
  
• How do you solve the following linear system: `x+y=1, 2x-3y=12`?
  
• How do you solve `\frac { v } { 5} + \frac { 2} { 3} = \frac { 6} { 5} + \frac { v } { 15}`?
  
• The perimeter of a rectangular flower garden is 60m and its area is 225 m^2. How do you find the length of the garden?
  
• How do you translate "91 more than the square of a number" into an algebraic expression?
  
• If r varies inversely as t, but directly as the square of m. if r=32 when m=8 and t=2, find r when m=6 and t=5?
  
• Simple Interest?
  
• Question #f53ce
  
• How do you solve this system of equations: `-\frac { 1} { 2} x + \frac { 1} { 5} y = 9 and 7x - \frac { 1} { 3} y = - \frac { 2} { 3}`?
  
• Question #6725f
  
• If 30% of r is equal to 75% of s, what is 50% of s if r=30?
  
• Factor completely?
  
• Finding Measures?
  
• The perimeter of a semicircle is 25.7 kilometers. What is the semicircle's diameter?
  
• The distance from the crest of one wave to the crest of the next wave is the ?
  
• Speed distance time?
  
• What is the percent of change? initial value:40 Final value:120
  
• The answer is given below someone show the calculation pleases?! I am stuck at this question
  
• Question #a5d20
  
• How do you solve the system of equations `4x - 5y = 25` and `- 7x + 3y = 8`?
  
• Question #244d9
  
• The length of a rectangle is four times the width. If the width is represented by x​, then build a variable expression that describes the length?
  
• Question #05e58
  
• AND gate is formed by using two? 1)OR 2)NAND 3)NOT 4)NOR
  
• A right triangle has sides A, B, and C. Side A is the hypotenuse and side B is also a side of a rectangle. Sides A, C, and the side of the rectangle adjacent to side B have lengths of `11`, `6`, and `13`, respectively. What is the rectangle's area?
  
• Question #1d775
  
• Question #715ca
  
• Solve for the currents through each resistor? And the voltages across each resistor? Including the each power?
  
• Zoe has a total of $4,000 invested in two accounts. One account pays 5% interest, and the other pays 8% interest. How much does she have invested in each account if her total interest for a year is $284?
  
• Question #e6f05
  
• Question #481b4
  
• Question #2dc91
  
• Question #89fd2
  
• Question #9f23c
  
• Question #a0eaf
  
• Question #30549
  
• How do you simplify `-( 8m + 3) + 3`?
  
• Nick can throw a baseball three more than 4 times the number of feet, `f`, that Jeff can throw the baseball. What is the expression that can be used to find the number of feet that Nick can throw the ball?
  
• How do you simplify `(y ^ { 9} ) ^ { \frac { 1} { 2} } ( p ^ { 9} ) ^ { 0}`?
  
• Question #aeb96
  
• The number of cars (c) in a parking lot increases when the parking fee (f) decreases. How do you write the correct equation for this scenario, and solve for the number of cars when the fee is $6?
  
• Question #05787
  
• Question #428d9
  
• What is another name for the first law of motion? thank you
  
• Question #34e08
  
• How do you simplify `(-380) + 38 + 380 div (-38)`?
  
• Question #a087a
  
• Question #bb39b
  
• Question #e3826
  
• Solve the simultaneous equations `2x+y=8.......................................(1)` `4x^2+3y^2=52.......................(2)` ?
  
• Question #2861c
  
• How do you simplify `((x^-1y^3)/(x^5y^8))^3`?
  
• How do you solve the system of equations `-6x + 5y = 8` and `x + 5y = - 13`?
  
• Question #f7758
  
• Question #90154
  
• If LMNO is a parallelogram, what are the values of x and y if `ON=5x-7, LM = 4x +4, and NM = x-7`?
  
• How do you multiply and simplify `\frac { y ^ { 2} - 4} { y ^ { 2} } \cdot \frac { y ^ { 2} - 2y } { y ^ { 2} + 7y - 18}`?
  
• How do you evaluate `\frac { b ^ { \frac { 2} { 2} } } { 4b ^ { 2} } - \frac { 2b ^ { - 3} } { 4b ^ { 2} }`?
  
• The formula E=Pt gives the energy, E watt hours, used when an electrical appliance of power P watts is used for t hours. What is the energy used in this situation: A 1400-W blow dryer is used for 10 min?
  
• Matthew has two different stocks. One is worth $9 more per share than the other. He has 17 shares of the more valuable stock and 42 shares of the other stock. His total assets in stocks is $1923. How much is the more expensive stock per share?
  
• How do you evaluate `\frac { - 3x } { 7} - \frac { 4} { 5} = \frac { - 10x + 15} { 5}`?
  
• Question #09bb3
  
• Question #f19cb
  
• How do you evaluate `2\frac { 3} { 4} \times 1\frac { 6} { 7} \times 5\frac { 3} { 8}`?
  
• Question #611bb
  
• How do you solve this system of equations by substitution: `- x+y = 40 and y = 9x`?
  
• Question #f76ca
  
• How do you rewrite the equation for `f`: `r^2 - 5hf = Tf`?
  
• How do you express `81/9` as a power of 3?
  
• How do you solve this system of equations: `c+ d = 22 and 4c + 2d = 56`?
  
• Question #682d3
  
• How do you solve the system of linear equations `5x - 4y = 6` and `2x + 3y = 2`?
  
• How do you combine `\frac { 1} { x - 3} + \frac { 1} { ( x - 3) ^ { 2} } - \frac { 1} { ( x - 3) ^ { 3} }` into one term?
  
• Constant of variation?
  
• Question #acd95
  
• Question #fe5ff
  
• How do you solve `3(x+8)-24=9-6x`?
  
• Question #f209e
  
• Question #96e0e
  
• Question #9133b
  
• Question #de326
  
• How do you simplify `\frac { [ x ^ { 2} \cdot y ^ { - 6} ] ^ { 3} \cdot z ^ { 4} \cdot a ^ { - 9} } { a ^ { 10} \cdot a x ^ { 2} y ^ { - 2} }`?
  
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