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3 years ago

What is y+1=2(x-4) written in standard form

Mathematics

2 answers:

IrinaVladis [17]3 years ago

5 0

Answer:

2x - y = 9

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 )

Rearrange y + 1 = 2(x - 4) into this form

y + 1 = 2x - 8 ( add 8 to both sides )

y + 9 = 2x ( subtract y from both sides )

9 = 2x - y ⇒ 2x - y = 9 ← in standard form

Verdich [7]3 years ago

3 0

Awnser: 2x-y=9

Step-by-step solution: y+1=2(x-4), step one simplify the parenthases y+1=2x-8, step two move all variables to one side of the equation, 1=2x-8-y, step three move all constants to the other side, 9=2x-y. And there we have it. And also if you end with more negatives than positives just multiply everything by negative one.

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In the following exercises, multiply the binomials. Use any method.<br> 255. (a + b)(2a + 3b)

Alex_Xolod [135]

Answer:

Hence the expression $(a+b)(2a+3b)=2a^2+5ab+3b^2$

Step-by-step explanation:

Explanation

The given expression is (a + b)(2a+3 b).
We have to multiply the given expression.
Multiply the (a + b) by 3b, multiply the (a + b) by 2a then add like terms.

$\begin{matrix}{} & {} & {} & {} & a & + & b \\ \times & {} & {} & {} & 2a & + & 3b \\ \end{matrix}$

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$\begin{matrix}{} & {} & {} & {} & 3ab & + & 3{{b}^2} \\ {} & {} & 2{{a}^2} & + & 2ab & {} & {} \\ \end{matrix}$

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$\begin{matrix}{} & {} & 2{{a}^2} & + & 5ab & + & 3{{b}^2} \\ \end{matrix}$

7 0

1 year ago

Given: -7x<-21 choose the solution set

Ahat [919]

Answer:

x > 3

Step-by-step explanation:

The only thing you need to do is just divide both sides by -7

-7x/-7<-21/-7

x>3

I hope this helped!! Good luck (:

6 0

2 years ago

2x+3y=6 and 2x+y=-2 solved by elimination

JulsSmile [24]

The two lines intersect at (-3,4)
-2/3X+2= -2X-2

Add 2X to both sides
Subtract 2 from both sides
Divide both sides by 4/3
You get X=-3
Plug in 3 to one of the equations and you’ll see that y= 4

6 0

3 years ago

If a cake is cut into thirds and each third is cut into fourths, how many pieces of cake are there?

IrinaK [193]

The question is asking for a fourth of a third.
1/4 of 1/3
"of" = multiplying in math
1/4 x 1/3
= 1/12
That means it is cut in twelfths and it has 12 slices.

Answer= 12 slices

Hope this helps :)

8 0

3 years ago

Find the least whole number that can replace _ to make the statement true _ ÷ 9 > 70

Semenov [28]

A>70*9
a>360
a should be at least 361

3 0

3 years ago