Question about SoftMath Algebrator - Algebra Homework Solver (689076614429)

12 + 2m = 20 - 2m

2m + 2m = 20 - 12

4m = 8

m = 8/4**m=2**

Posted on Mar 06, 2009

12+2m=20-2m

2m+2m=20-12

4m=8

m=2

Posted on Mar 13, 2009

4m = 8

m = 2

Posted on Mar 10, 2009

60 - 20 = 40

40 / 20 = 2

Answer check: (2*20)+20=60 (40)+20=60 The numbers are 40 and 20.

40 / 20 = 2

Answer check: (2*20)+20=60 (40)+20=60 The numbers are 40 and 20.

Mar 10, 2015 | Educational & Reference Software

ssame as -6/x/4.2

Mar 04, 2015 | Educational & Reference Software

160 by 140

The perimeter is 600, so 2w+2l=600 where w is the width and l is the length.

Divide both sides by 2: w+l=300

The length is 20 more than the width: l=w+20

Substituting in the previous equation: w+(w+20)=300

Collecting terms: 2w+20=300

Subtract 20 from both sides: 2w=280

Divide by 2: w=140

Thus the width is 140. Substituting into the equation for length: l=140+20

Simplifying: l=160

The width is 140 and the length is 160

The perimeter is 600, so 2w+2l=600 where w is the width and l is the length.

Divide both sides by 2: w+l=300

The length is 20 more than the width: l=w+20

Substituting in the previous equation: w+(w+20)=300

Collecting terms: 2w+20=300

Subtract 20 from both sides: 2w=280

Divide by 2: w=140

Thus the width is 140. Substituting into the equation for length: l=140+20

Simplifying: l=160

The width is 140 and the length is 160

Sep 15, 2014 | MathAid Algebra II

A received 1/4. B and split the other 3/4. B got 3/5 of 3/4 and C got 2/5 of 3/4, so B got (3/4)*(3/5) or 9/20 and C got (3/4)*(2/5) or 6/20. Taking the common denominator of 20, A got 5/20, B got 9/20, and C got 6/20. Multiplying everything by 20 gives 5:9:6.

May 09, 2014 | The Learning Company Achieve! Math &...

20 x 120 /100 = 24

or

20% is 1/5, so increase 20 by 1/5 = 4

so 20 + 4 = 24

or

20% is 1/5, so increase 20 by 1/5 = 4

so 20 + 4 = 24

May 06, 2014 | Mathsoft Educational & Reference Software

1 tile by 20 tiles - perimeter of 1+ 20 +1 + 20 = 42

2 tiles by 10 tiles - perimeter of 2 + 10 + 2 + 10 = 24

(can't make a rectangle with 3 rows)

4 tiles by 5 tiles - perimeter of 4 + 5 + 4 + 5 = 18

5 tiles by 4 tiles - perimeter of 5 + 4 + 5 + 4 = 18

(can't make a rectangle with 6, 7, 8 or 9 rows)

10 tiles by 2 tiles - perimeter of 10 + 2 + 10 + 2 = 24

20 tiles by 1 tile - perimeter of 20 + 1 + 20 + 1 = 42

So 6 different rectangles. Smallest perimeter is 18.

2 tiles by 10 tiles - perimeter of 2 + 10 + 2 + 10 = 24

(can't make a rectangle with 3 rows)

4 tiles by 5 tiles - perimeter of 4 + 5 + 4 + 5 = 18

5 tiles by 4 tiles - perimeter of 5 + 4 + 5 + 4 = 18

(can't make a rectangle with 6, 7, 8 or 9 rows)

10 tiles by 2 tiles - perimeter of 10 + 2 + 10 + 2 = 24

20 tiles by 1 tile - perimeter of 20 + 1 + 20 + 1 = 42

So 6 different rectangles. Smallest perimeter is 18.

Jan 08, 2014 | Educational & Reference Software

(D=Dad's age, and S=Son's age)

D=S+20 (Dad is 20 years older than Son)

D+10 = 2xS (In ten years Dad will be twice Son's current age)

therefore (by substitution):

S+20+10 = 2xS

S+30 = 2S

2S = S+30

2S-S = 30 (subtract S from both sides)

D = S+20

D = 30+20

In ten years, Dad will be 60, which is twice Son's current age of 30.

Please ask for -Gort.

Aug 27, 2010 | Mathsoft Solving and Optimization...

try to collect the like terms:-20=-10x

divide both sides the coefficient of X which -10

X=-20/-10

X=2

divide both sides the coefficient of X which -10

X=-20/-10

X=2

Jan 17, 2010 | SoftMath Algebrator - Algebra Homework...

Hello,

You are talking of the distributivity of multiplication with respect to the addition or subtraction. The only term where you have multiplication and addition/subtraction is the one with parentheses because

4(5-6y) = 4*(5-6y). * means multiply by

Distributing the product consists in removing CORRECTLY the parentheses.

I consider the term alone

4*(5-6y) = 4*5 +4*(-6y)= 20 -4*6*y = 20 -24*y

You put this result in a package and replace it where it was it the original expression.

So

8*y -(package) +20= Replace package

8*y -(20-24*y)+20 = 8*y -20 -(-24y) + 20 Remember -*(-) = +

8*y -20 +24*y +20= Remember -20+20 =0

8*y -20 +20 +24*y= Addition is commutative

8*y +24*y = 32*y

Let y be an orange 8 oranges + 24 oranges =32 oranges.Coclusion

**8y-4(5-8y)+20 = 32y**

You are talking of the distributivity of multiplication with respect to the addition or subtraction. The only term where you have multiplication and addition/subtraction is the one with parentheses because

4(5-6y) = 4*(5-6y). * means multiply by

Distributing the product consists in removing CORRECTLY the parentheses.

I consider the term alone

4*(5-6y) = 4*5 +4*(-6y)= 20 -4*6*y = 20 -24*y

You put this result in a package and replace it where it was it the original expression.

So

8*y -(package) +20= Replace package

8*y -(20-24*y)+20 = 8*y -20 -(-24y) + 20 Remember -*(-) = +

8*y -20 +24*y +20= Remember -20+20 =0

8*y -20 +20 +24*y= Addition is commutative

8*y +24*y = 32*y

Let y be an orange 8 oranges + 24 oranges =32 oranges.Coclusion

Sep 10, 2009 | The Learning Company Achieve! Math &...

Multiply throughout by (x+5)(22x+20)

(22x+20)+7(x+5)=(x+13)(x+5)

29x+25=x²+18x+65

x²-11x+40=0

x=[11±?11²-4×1×40]/2

x=[11±?-39]/2

(22x+20)+7(x+5)=(x+13)(x+5)

29x+25=x²+18x+65

x²-11x+40=0

x=[11±?11²-4×1×40]/2

x=[11±?-39]/2

Jun 23, 2009 | SoftMath Algebrator - Algebra Homework...

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