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3 years ago

2(7x-34) = 22 Find X Brainliest

Mathematics

2 answers:

Zepler [3.9K]3 years ago

8 0

Answer: x = 45/7

Step-by-step explanation:

Stolb23 [73]3 years ago

7 0

Answer:

x = 6.428

Step-by-step explanation:

2(7x-34) = 22

Distribution:

2 times 7x = 14x

2 times -34 = -68

Your equation is now:

14x - 68 = 22

Add 68 on both sides to leave 14x alone

68+22 = 90

You are left with this equation:

14x = 90

Divide by 14 to isolate the x

90/14

x = 6.428 (approximately)

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the height of the candle is 13cm and the circumference of the candle is 31.416cm. to the nearest centimeter how much wax is need

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This is the concept of volumes of solid materials, to get the amount of wax needed to make the candle we will require to calculate for the volume of the candle.
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since we are given the circumference of the candle we need to get the radius first;
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C=31.416 cm
31.416=πd
d=31.416/π
d=10.0000 cm
Therefore the radius will be 5 cm.
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the graph of a line in the xy-plane has slope of 7 and contains the point(6,28). A second line passes through the points (3,7) a

Maslowich

Answer:

x = 3

Step-by-step explanation:

We require the equations of the 2 lines.

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

The line has slope = 7, hence

y = 7x + c ← is the partial equation

To find c substitute (6, 28) into the partial equation

28 = 42 + c ⇒ c = 28 - 42 = - 14

y = 7x - 14 → (1)

Calculate the slope of the second line using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (3, 7) and (x₂, y₂ ) = (- 1, - 13)

m = $\frac{-13-7}{- 1-3}$ = $\frac{-20}{-4}$ = 5, thus

y = 5x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (3, 7), then

7 = 15 + c ⇒ c = 7 - 15 = - 8

y = 5x - 8 → (2)

Solving (1) and (2) by equating the right sides

7x - 14 = 5x - 8 ( subtract 5x from both sides )

2x - 14 = - 8 ( add 14 to both sides )

2x = 6 ( divide both sides by 2 )

x = 3

The x- coordinate of the point of intersection is x = 3

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3 years ago