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3 years ago

explain why is it important to line up decimals numbers by their place value when you add or subtract them

2 answers:

6 0

It is important because if you are adding and subtracfing and the decimals are off when your done with the equation you might end up with two decimals or numbers in the wrong place

butalik [34]3 years ago

4 0

So you can keep track of your problem and so you will have the place value of the problem correct

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Line b passes through the Point(-3, -4) and has a slope of -1/2. What is the equation of Line b in standard form?

Anna11 [10]

Answer:

$x+2y=-11$

Step-by-step explanation:

Slope intercept form of a line is given by:

$y=mx+b$

Where

m is the slope and b is the y-intercept

Given slope is $-\frac{1}{2}$

We can write:

$y=-\frac{1}{2}x+b$

Now to find b, we replace x with -3 and y with -4, given, so we have:

$y=-\frac{1}{2}x+b\\-4=-\frac{1}{2}(-3)+b\\-4=\frac{3}{2}+b\\b=-5.5$

So, the equation is:

$y=-\frac{1}{2}x-\frac{11}{2}$

Now,

The standard form is given by:

$Ax+By=C$

So, we take x and y to left side and the constant to right side. Rearranging, we get:

$y=-\frac{1}{2}x-\frac{11}{2}\\2y=-x-11\\x+2y=-11$

The first answer choice is right.

3 0

3 years ago

What is mn+5m-2+mn+3

viktelen [127]

Answer:

$mn + 5m - 2 + mn + 3 \\ = 2mn + 5m + 1 \\ = = = = = = = = = = =$

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4 0

3 years ago

2x+7 =5 is an example of...

tresset_1 [31]

Answer:

This is an example of distribution

Step-by-step explanation:

The reason why is because the equation is linear and if you exclud the y it show that it can distribute.

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3 years ago

I need the answer to this

Arisa [49]

Answer:

Here Is Your Answer Of Your Question and Please Subscribe To Auroza Gaming

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