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mafiozo [28]
2 years ago
8

Which expression is equivalent to 9a + 12?

Mathematics
2 answers:
miv72 [106K]2 years ago
7 0
3(3a+4) have a good day I hope this helps
Veronika [31]2 years ago
4 0

Answer:

3(3a+4)

Step-by-step explanation:

3(3a+4)

use distributive property

9a+12

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The table shows a linear function. <br>which equation represents the function?
Bas_tet [7]

Answer:

Option C is correct.

The equation f(x)= -\frac{1}{2}x +4 represents the function.

Step-by-step explanation:

Using slope intercept form to find the equation of line :

For any two points (x_1, y_1) and  (x_2, y_2) the equation of line is given by:

y -y _1 = m(x-x_1) ......[1] ;where m is the slope given by:

m = \frac{y_2-y_1}{x_2-x_1}

Consider any two points from table :

let (4, 2) and (0, 4) be any two points.

calculate slope:

m = \frac{y_2-y_1}{x_2-x_1}= \frac{4-2}{0-4}

m = \frac{2}{-4} = -\frac{1}{2}

Now, substitute in equation [1]  we have:

y - 2 = -\frac{1}{2} (x-4)

Distributive property i.e,  a\cdot (b+c) = a\cdot b + a\cdot c

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

Add both sides 2 we get;

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

Simplify:

y = -\frac{1}{2}x+4

Since, y= f(x)

f(x)= -\frac{1}{2}x +4

therefore, the equation f(x)= -\frac{1}{2}x +4 represents the function.


8 0
3 years ago
Find the value of x ​
morpeh [17]

Answer:

50

Step-by-step explanation:

140- 40=100

100÷2=50

x=50

6 0
2 years ago
Can someone good at math give me a hand I really need some w
dedylja [7]
What is the question that u need help with
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The sprinkler can spray 46 gallons of water in 1 minute.

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31*27=837
They need to hire 837 employees.

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1326/26=51
The parking lot will have 51 cars per row.

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761*23=17503
The machine can make 17,503 pencils in 23 seconds

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6 0
3 years ago
Read 2 more answers
Figure A is a scale image of Figure B, as shown.
Inessa [10]

9514 1404 393

Answer:

  x = 2

Step-by-step explanation:

Using the scale factor, we have ...

  x/8 = 0.25/1

  x = 8(0.25) . . . . multiply by 8

  x = 2

_____

<em>Additional comment</em>

I like to write proportions with the variable in the numerator. That way they are easily solved by a single multiplication. The trick is to get corresponding parts in the same positions. Here, the fractions are written ...

  B/A = smaller part / larger part = x/8 = 0.25/1

5 0
3 years ago
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