3 years ago

X + 4x + 6x simplify

1 answer:

5 0

A variable without a number in front is considered to be 1 therefore,

1 + 4 + 6 = 11
then you just add the variable afterwards to make it

11x

hope this helps :)

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The quantities X and Y are proportional find the constant of proportionality (r) in the equation y=Rx

Juliette [100K]

Answer:

y/x = R

Step-by-step explanation:

The two quantities x and y are proportional means they have a relation.

The equation is;

y= Rx ------to find the proportional R you make R the subject of the formula;

y/ x = R

4 0

3 years ago

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The length of a rectangular pool is 5 meters less than twice the width. If the pool’s perimeter is 62 meters, what is the width?

jonny [76]

The width is 12 meters.

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Let x and y represent the tens digit and ones digit of a two digit number, respectively. The sum of the digirs of a two digit nu

gayaneshka [121]

Answer:

The Original Number is 36

Step-by-step explanation:

Given:

y is the number in units place

x is the number in tens place

Original Number = $10x+y$

$x+y=9$ is equation 1

Now after interchanging the digits

New number = $10y+x$

New Number = 27 + Original Number

Substituting Valus in above equation we get.

$10y+x=27+10x+y\\10y-y+x-10x=27\\9y-9x=27\\9(y-x)=27\\y-x=\frac{27}{9}\\$

$y-x=3$ let this be equation 2

Adding equation 1 and 2 we get

$(x+y=9)+(y-x=3)\\2y=12\\y=\frac{12}{2}\\y= 6\\$

Substituting value of y in equation 1 we get

$x+y=9\\x+6=9\\x=9-6\\x=3$

x=3 and y=6

Original Number = $10x+y=10\times3+6=30+6=36$

4 0

3 years ago

3x^2 - 5x + 12 5x^2 + x - 11

Effectus [21]

Answer:

8x²+5x+1

Step-by-step explanation:

3x²-5x+12

5x²+ x - 11

________

3x²+5x²= 8x²

}

5x+x =5x

}

12-11 =1

8x²+5x+1

7 0

3 years ago

Find the sum of the first 8 terms in the sequence 2 8 32 128

Zigmanuir [339]

the sequence is in multiples of 4 (2*4=8, 8*4=32, 32*4=128)

so 128*4=512, 512*4=2048, 2048*4=8192 & 8192*4=32768

2+8+32+128+512+2048+8192+32768=43690

4 0

3 years ago