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Valentin [98]
3 years ago
10

Which of the following describes the correct process for solving the equation 3x+6=21 and arrives at the correct solution?

Mathematics
1 answer:
My name is Ann [436]3 years ago
4 0
The correct solution is C

Subtract 6 from both sides of the equation
        3x + 6 - 6 = 21 - 6
        3x = 15

Then divide both sides by 3

       \frac{3x}{3}   =    \frac{15}{3}
       
       x = 5

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3 years ago
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Please help and show your work ( no links or files) plz
mr_godi [17]

Answer:

Step-by-step explanation:

Use the formula for the area of a triangle,

Area of a triangle = \frac{1}{2}(\text{Base})(\text{Height})

7). Area of the triangle = \frac{1}{2}(20)(7.4)

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9). Area of the triangle = \frac{1}{2}(16)(7)

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5 0
3 years ago
Help on this math question. 25 points.
solniwko [45]

Answer:

the third one

Step-by-step explanation:

4 0
3 years ago
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write an equation of a line that passes through the following tow points (4, -6) and (2, 8) show work
stiks02 [169]

Answer:

y = -7x + 22

Step-by-step explanation:

Given

(x_1,y_1) = (4,-6)

(x_2,y_2) = (2,8)

Required

Determine the line equation

This question will be answered using linear interpolation.

This is represented as thus:

\frac{y - y_1}{x - x_1} = \frac{y_2 - y_1}{x_2 - x_1}

Substitute values for x1,x2,y1 and y2

\frac{y - (-6)}{x - 4} = \frac{8 - (-6)}{2 - 4}

\frac{y +6}{x - 4} = \frac{8 +6}{2 - 4}

\frac{y +6}{x - 4} = \frac{14}{-2}

\frac{y +6}{x - 4} =-7

Cross Multiply

y + 6 = -7(x - 4)

y + 6 = -7x + 28

Make y the subject

y = -7x + 28-6

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7 0
3 years ago
What is the solution 4x+6<18
mash [69]

Answer:

x < 3

Step-by-step explanation:

4x +6 < 18

add and subtract 6 from both sides

4x + 6 - 6 < 18 -6

4x < 12

x< 12/4

X < 3

4 0
3 years ago
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