All categories

3 years ago

Solve 1.2(5-x) = 2(1.4x+3)

Mathematics

1 answer:

Arturiano [62]3 years ago

4 0

Answer:

x = 0

Step-by-step explanation:

Solve for x:

1.2 (5 - x) = 2 (1.4 x + 3)

Expand out terms of the left hand side:

6 - 1.2 x = 2 (1.4 x + 3)

Expand out terms of the right hand side:

6 - 1.2 x = 2.8 x + 6

Subtract 2.8 x from both sides:

6 + (-1.2 x - 2.8 x) = (2.8 x - 2.8 x) + 6

-1.2 x - 2.8 x = -4 x:

-4 x + 6 = (2.8 x - 2.8 x) + 6

2.8 x - 2.8 x = 0:

6 - 4 x = 6

Subtract 6 from both sides:

(6 - 6) - 4 x = 6 - 6

6 - 6 = 0:

-4 x = 6 - 6

6 - 6 = 0:

-4 x = 0

Divide both sides of -4 x = 0 by -4:

(-4 x)/(-4) = 0/(-4)

(-4)/(-4) = 1:

x = 0/(-4)

0/(-4) = 0:

Answer: x = 0

You might be interested in

Janna has three flat plates easy the same size. She stores them in an L shaped drawer as shown so that they fit snuggly inside w

Phantasy [73]

Answer:

258 square centimeters

Step-by-step explanation:

Consider the image attached below.

We can see that the length of each side of L shape is 40 cm and in 2 plates fit in between.

We need to find the are which is not covered by the plates. Let us calculate the area of L shape first.

We can see that it is a square with one fourth of its area missing. So the area of square with side length 40 cm is,

$A_1= 40 \times 40 = 1600 cm^2$ , where ' $A_1$ ' is the area of square.

Now, one fourth of the area is not there in the L shape, so one-fourth of $1600cm^2$ is,

$\frac{1600}{4}= 400 cm^2$

Therefore, the area of L shape drawer is,

$1600-400=1200 cm^2$

Now, we can see that the diameter of each circular plate is, 20 cm. So the radius of circular plate is 10 cm. Let $A_2$ be the area of each circular plate, so,

$A_2= \pi (10)^2=100\pi cm^2$

There are three plates so the total area is,

$A_3= 3\times 100 \pi = 300 \pi cm^2$

$A_3= 300\times 3.14 = 942 cm^2$

Hence, the area not covered by the plates is,

= $1200-942= 258 cm^2$

So, the area not covered by three flat plates is 258 square centimeters.

8 0

3 years ago

YALL plz help…. I’d don’t get this at all

lidiya [134]

The answer according to me would be B (-a) + b

Because when you solve it. It would turn into a - b

4 0

2 years ago

Read 2 more answers

(please zoom / zoom out if needed to see question. (: ) (Worth 10 Points Each)

damaskus [11]

Area of the first one is has a area of 162
the second one has a area of 189
the third one has an area of 162
the fourth one has a area of 12

4 0

3 years ago

Read 2 more answers

Mr. Freye distributed $126 equally among his 4 children for their weekly allowance how much money did each child receive?

mote1985 [20]

Answer:

$10.50

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

And object is traveling at a steady speed of 8 2/3 mph how long will it take to object to travel 5 1/5 miles

LenaWriter [7]

$\bf \begin{array}{ccll}
miles&hours\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
8\frac{2}{3}&1\\\\
5\frac{1}{5}&h
\end{array}\implies \cfrac{8\frac{2}{3}}{5\frac{1}{5}}=\cfrac{1}{h}\implies \cfrac{\quad \frac{26}{3}\quad }{\frac{26}{5}}=\cfrac{1}{h}\implies \cfrac{26}{3}\cdot \cfrac{5}{26}=\cfrac{1}{h}
\\\\\\
\cfrac{5}{3}=\cfrac{1}{h}\implies 5h=3\implies h=\cfrac{3}{5}$

which is just 36 minutes.

8 0

3 years ago