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Diano4ka-milaya [45]
2 years ago
8

Which graph represents a linear function?​

Mathematics
1 answer:
Ymorist [56]2 years ago
5 0
2nd graph (straight line)
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What is the value of x in the equation below? 4(x + 3) = 9x + 16 + 3x
creativ13 [48]

Answer:

x = -1/2

Step-by-step explanation:

4(x + 3) = 9x + 16 + 3x

Distribute the 4

4x +12 = 9x+16+3x

Combine like terms

4x+12 = 12x+16

Subtract 4x

4x-4x+12 = 12x-4x+16

12 = 8x+16

Subtract 16

12-16 = 8x+16-16

-4 =8x

Divide by 8

-4/8 =8x/8

-1/2 =x

3 0
3 years ago
A cleaning company charged $125 to clean a 2500 square foot house. The same company charged $146 to clean a 3200 square foot hou
HACTEHA [7]

Answer:

The cost is y = $185

Step-by-step explanation:

Let us have points spelt out here

(2500,125) and (3200,146)

The general form of a straight line equation is;

y = mx + b

where m is slope

So to calculate the slope in this case, we have

m = (146-125)/(3200-2500)

m = 21/700 = 0.03

So we have the equation as

y = 0.03x + b

To get b, we use any of the two points

Let us use (2500,125)

So we have

125 = 0.03(2500) + b

125 = 75 + b

b = 125-75

b = 50

So the complete equation of the line is;

y = 0.03x + 50

So here, we want to find the cost of a house with 4500 square feet

simply substitute 4,500 for x

y = 0.03(4500) + 50

y = 135 + 50

y = $185

4 0
3 years ago
In oM name a chord that lies on a secant
krok68 [10]
I think its EB.

Hope this helps!
6 0
3 years ago
1. If the area of a circle is 81pi square feet, find its circumference.
My name is Ann [436]

Answer:

the circumference is 18 pi feet.

Step-by-step explanation:

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2 years ago
Classify each polynomial by its degree and number of terms.
vichka [17]
Can you be more specific on the problem
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