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2 years ago

12x─ 15 = 6 ─ 3x answered as a fraction

Mathematics

2 answers:

KiRa [710]2 years ago

8 0

Answer:

x is equal to one and two fifths.

Step-by-step explanation:

Given:

12x - 15 = 6 - 3x

Let's start by noticing that every term in that equation is divisible by 3. That means we can factor 3 out of it, giving us:

4x - 5 = 2 - x

Now we'll add x to both sides:

4x + x - 5 = 2 - x + x

5x - 5 = 2

An then we add 5 to both sides:

5x - 5 + 5 = 2 + 5

5x = 7

Finally, we can divide both sides by 5 to get the final answer:

5x ÷ 5 = 7 ÷ 5

x = 7/5

To put that in proper form it would be:

$x = 1 \frac{2}{5}$

telo118 [61]2 years ago

5 0

Answer:

x=1.4 or 21/15

Step-by-step explanation:

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Tina ordered a pizza for lunch. The pizza is round and has a radius of 8 inches. Tina only ate 13 of the pizza and took home the

Alex Ar [27]

Correction

brainly.com/question/15712098

Answer:

$67.02\ in^2$

Step-by-step explanation:

-We find the surface area of the formula as follows:

$A=\pi r^2, \ \ r=radius=8\ in\\\\=\pi \times 8^2\\\\=201.06\ in^2$

#We then find the area of the remaining fraction if she only ate one third:

$Eaten=\frac{1}{3}\times Area\\\\=\frac{1}{3}\times 201.06\ in^2\\\\=67.02\ in^2$

Hence, Tina ate $67.02\ in^2$ of the pizza.

3 0

2 years ago

The equation line l is given by the equation y= 7/4x+3. line m goes through the point ( –1,4) and is perpendicular to line l whi

mr_godi [17]

We determine line m as follows:

*First, by theorem we have the following:

$m_1=-\frac{1}{m_2}$

Here m1 & m2 are the slopes of two perpendicular lines. For all lines that are perpendicular that is true, so we calculate the slope of line m using the slope of the function given [Which has a slope of 7/4]:

$m_1=-\frac{1}{\frac{7}{4}}\Rightarrow m_1=-\frac{4}{7}$

So, the slope of line m is -4/7. Now, using this slope and the point (-1, 4) we replace in the following expression:

$y-y_1=m_1(x-x_1)$

Here x1, y1 & m1 are the x-component of the point, the y-component of the point, and the slope of the line respectively, so we replace and solve for y: