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Otrada [13]
2 years ago
15

Please explain to me how 3.2÷4=0.8 is done

Mathematics
2 answers:
DedPeter [7]2 years ago
4 0

To make it easier just assume there is no decimal point then just work out the 32÷4 where we know that 4 goes into 32 8 times so you get 8 remember the decimal point and since it was one decimal place you will push the decimal over to the left of 8 and that is how you get 0.8

trapecia [35]2 years ago
4 0

So the idea with literal equations is to get one variable in terms of all the rest.  In this equation, we are trying to solve for x in terms of y (meaning that we are trying to get x all by itself with y on the other side of the equal sign).  Whenever you have a single fraction by itself on one side of an equal sign, the first thing that I always do is cross multiply.  This gets rid of the fraction completely and makes everything look a little nicer:

y * (5-4x) = 1 * (2x+3)

Distribute on the left side:

5y-4xy = 2x+3

Move the x's all to the same side.  I'm doing this by subtracting 2x from both sides:

5y-4xy - 2x = 3

For simplicity's sake, move 5y to the right side of the equation by subtracting it from both sides:

-4xy - 2x = 3 - 5y

Factor out the x on the left side:

x (-4y-2) = 3 - 5y

Get the x term by itself on the left side by dividing both sides by -4y-2.

x = (3-5y)/(-4y-2)

 

And there you have it!  I hope that this helped a little.  Good luck!

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Mode is used to ascertain what the most repeated data is in the data set. <br> True or False
Firdavs [7]

Answer:

true

Step-by-step explanation:

7 0
2 years ago
Your hourly salary increased from $15 to $22 what is the precent increase in your salary?
Elanso [62]

The percentage increase is 46%.

Original number/start = $15

End number = $22

Increase = $22 - $15 = $7

% increase = Increase ÷ Original Number × 100

Substitute in known values

% increase = 7 ÷ 15 × 100

Divide

% increase = 0.46 × 100

Multiply

% increase = 46%

The percentage increase is 46%.

Find out more information about percentage increase here

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8 0
1 year ago
1) Identify the slope of the given line
adell [148]

ok so here we go:

1) (-6,-2.5),(-4,-3)\ m= -0.25 or  -\frac{1}{4}

2 )y=-0.25x-4 so the answer is (0, -4) or -4

3) y=\frac{3}{2}x+1 m=\frac{3}{2}

4) y=[tex]\frac{3}{2}x+1[tex] so the answer is (0, 1) or 1

8 0
3 years ago
Read 2 more answers
Vectors: Find the vector from the point A=(−1,−7,3) to the point B=(3,−2,9).
devlian [24]

Answer:

\overrightarrow {AB} = (4,5,6)

1. 〈x,y,z〉=〈−1,−7,3〉+t〈−4,−5,−6〉 F

2. 〈x,y,z〉=〈−1,−7,3〉+t〈3,−2,9〉 F

3. 〈x,y,z〉=〈−1,−7,3〉+t〈4,5,6〉 T

4. 〈x,y,z〉=〈3,−2,9〉+t〈−1,−7,3〉 F

5. 〈x,y,z〉=〈3,−2,9〉+t〈4,5,6〉 F

Step-by-step explanation:

The vector AB is the vectorial difference between point A and B, that is:

\overrightarrow {AB} = \vec B - \vec A

Given that \vec A = (-1,-7,3) and \vec B = (3,-2,9), the vector AB is:

\overrightarrow {AB} = (3,-2,9)-(-1,-7,3)

\overrightarrow{AB} = (3-(-1),-2-(-7),9-3)

\overrightarrow {AB} = (4,5,6)

The vectorial equation of the line is represented by:

\langle x, y, z\rangle = \vec A + t \cdot \overrightarrow {AB}

Where t is the parametric variable, dimensionless. Given that \vec A = (-1,-7,3) and \overrightarrow {AB} = (4,5,6)

\langle x,y,z \rangle = \langle -1,-7,3 \rangle + t\cdot \langle 4,5,6 \rangle

Finally, the list of questions are now checked:

1. 〈x,y,z〉=〈−1,−7,3〉+t〈−4,−5,−6〉 F

2. 〈x,y,z〉=〈−1,−7,3〉+t〈3,−2,9〉 F

3. 〈x,y,z〉=〈−1,−7,3〉+t〈4,5,6〉 T

4. 〈x,y,z〉=〈3,−2,9〉+t〈−1,−7,3〉 F

5. 〈x,y,z〉=〈3,−2,9〉+t〈4,5,6〉 F

4 0
2 years ago
How do you divide a decimal by a whole fraction
Otrada [13]

Answer

wherever the decimal is, put it directly on top of the dividing line thing. Now that the decimal looks like a regular whole number you can divide like you usually would. Whenever you do regular long division, your answer is always going to be on the top of the line. Your answer should have a decimal in it ... and that should be your answer.

7 0
2 years ago
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