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2 years ago

6

eric have rock and classic. the rock is 3 times more than classic. let c represent classic. what the expression for number of ro

ck

1 answer:

Ivenika [448]2 years ago

7 0

Answer:

3c

Step-by-step explanation:

3c im pretty sure. Since it is 3 times classic. classic is c. so rock must be R. so R=C3.

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5x – 12y – 17 = 0<br> 1*9(x + 2) - (y + 1) + 3 = 0

valentina_108 [34]

Answer: $x=\frac{12y+17}{5}$

$y=\frac{-5x+17}{-12}$

$x=\frac{y-20}{9}$

y=9x+20

Step-by-step explanation:

5x-12y-17=0 (plus 17 from both sides)

5x-12y=17 (plus 12y from both sides)

5x=12y+17 (divide 5 from everything)

$x=\frac{12y+17}{5}$

5x-12y-17=0 (plus 17 from both sides)

5x-12y=17 (minus 5x from both sides)

-12y=-5x+17 (divide everything by -12)

$y=\frac{-5x+17}{-12}$

1*9(x+2)-(y+1)+3=0 (distribute 9 to x and to 2) (distribute -1 to y and to 1)

1*9x+18-y-1+3=0 (times 9x by 1)

9x+18-y-1+3=0 (combine like terms)

9x-y+20=0 (minus 20 from both sides)

9x-y=-20 (plus y to both sides)

9x=y-20 (divide 9 from both sides)

$x=\frac{y-20}{9}$

1*9(x+2)-(y+1)+3=0 (distribute 9 to x and to 2) (distribute -1 to y and to 1)

1*9x+18-y-1+3=0 (times 9x by 1)

9x+18-y-1+3=0 (combine like terms)

9x-y+20=0 (minus 20 from both sides)

9x-y=-20 (minus 9x from both sides)

-y=-9x-20 (divide -1 from everything)

y=9x+20

3 0

3 years ago

work out the equation of the line which passes through the point (-1, 2) and is paralell to the line y = x + 4

notka56 [123]

Step-by-step explanation:

working g and everything is above

hope its of help

3 0

3 years ago

a friend is having trouble with exponents and asks you to review some worked probelems look over the problems and correct any mi

Stella [2.4K]

We have the following expression:

$2x^2y\cdot3x^5y^2$

By combining similar terms, we get

$2\cdot3\cdot x^2\cdot x^5\cdot y\cdot y^2$

now, 2 times 3 is 6 and to add exponents, both the exponents and variables should be alike:

$x^2\cdot x^5=x^{2+5}=x^7$

Similarly,

$y\cdot y^2=y^{1+2}=y^3$

Therefore, the answer is

$6x^7y^3$

4 0

1 year ago

The mass, m kilograms, of a horse is 429 kg, correct to the nearest kilogram.

Liula [17]

Answer:

400 < m< 430 kg

Step-by-step explanation:

the mass of horse is 429 kg

estimated to the nearest hundred is 400 kg

estimated to the nearest tens is 430 kg

thus the value of m mass lies between 400 to 430

therefore

400 < m< 430 kg

6 0

1 year ago

Read 2 more answers

Write an equation in standard form using integers <br><br> Y= - x<br> —<br> 5

kykrilka [37]

Answer:

x + y = - 5

Step-by-step explanation:

The equation of a line in standard form is

Ax + By = C ( A is a positive integer and B, C are integers )

Given

y = - x - 5 ( add x to both sides )

x + y = - 5 ← in standard form

8 0

3 years ago