Write the expression in expanded form. (4.2z)(-5y-3)

Mathematics

1 answer:

oee [108]3 years ago

5 0

The answer is -21yz - 12.6z

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Write the equation 12y = 4x + 1 in standard form.

ivann1987 [24]

Answer:

4x - 12y = -1

Step-by-step explanation:

Standard form Ax +By = C

12y = 4x + 1

0 = 4x - 12y +1 Substract 12y from both sides

-1 = 4x - 12y as 4x - 12y = -1 Substract -1 from both sides

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3 years ago

Please help, explain if possible

Zepler [3.9K]

Answer:

Step-by-step explanation:

133

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Solve for 45 points and explain well

Delicious77 [7]

Answer:

Step-by-step explanation:

$\text{The intercept form of an equation of a line:}\\\\\dfrac{x}{a}+\dfrac{y}{b}=1\\\\a-x\ intercept\\b-y\ intercept\\\\\text{We have:}\\\\point\ (2,\ 4)\to x=2,\ y=4\\a=c\\b=c\\\\\text{Substitute:}\\\\\dfrac{2}{c}+\dfrac{4}{c}=1\\\\\dfrac{2+4}{c}=1\\\\\dfrac{6}{c}=1\qquad\text{multiply both sides by}\ c\neq0\\\\6=c\to c=6$

$\text{Put it to the equation in the intercept form:}\\\\\dfrac{x}{6}+\dfrac{y}{6}=1\\\\\dfrac{x+y}{6}=1\qquad\text{multiply both sides by 6}\\\\x+y=6\qquad\text{subtract}\ x\ \text{from both sides}\\\\y=-x+6$