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Juli2301 [7.4K]
3 years ago
12

0.3(4-x)=x-1.4 how do you solve this problem?

Mathematics
1 answer:
tresset_1 [31]3 years ago
4 0

Answer:

x = 2.

Step-by-step explanation:

Solve for x:

0.3 (4 - x) = x - 1.4

Expand out terms of the left hand side:

1.2 - 0.3 x = x - 1.4

Subtract x from both sides:

1.2 + (-0.3 x - x) = (x - x) - 1.4

-0.3 x - x = -1.3 x:

-1.3 x + 1.2 = (x - x) - 1.4

x - x = 0:

1.2 - 1.3 x = -1.4

Subtract 1.2` from both sides:

(1.2 - 1.2) - 1.3 x = -1.2 - 1.4

1.2 - 1.2 = 0:

-1.3 x = -1.2 - 1.4

-1.2 - 1.4 = -2.6:

-1.3 x = -2.6

Divide both sides of -1.3 x = -2.6 by -1.3:

(-1.3 x)/(-1.3) = (-2.6)/(-1.3)

(-1.3)/(-1.3) = 1:

x = (-2.6)/(-1.3)

(-2.6)/(-1.3) = 2.:

Answer:  x = 2.

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Ira Lisetskai [31]

Answer:

x=8    y=4

Step-by-step explanation:

x=12-y

12-y-y=4

-2y=-8

y=4

x=12-y

x=12-4

x=8

5 0
3 years ago
Delta pays Pete Rose $180 per day to work. Pete became ill and went home early after 1/6 of a day. What did he earn that day ass
kaheart [24]
Pete would have gotten 30$ from work that day (1/6 of 180)
3 0
3 years ago
Margot is sewing a ribbon on a seam along the perimeter of a square pillow. The side length of the pillow is 2x2+1 inches. She p
defon

Step-by-step explanation:

perimeter \: of \: first \: pillow \: is \:  \\ 4(2 {x}^{2} + 1) \\ perimeter \: of \: second \: pillow \: is \:  \\ 4(4x - 7) \\ so \: we \: need \: compeletly \: 4(2 {x}^{2} + 1) + 4(4x - 7) \: ribbons. \\ 8 {x}^{2} + 4 + 16x - 28 = 8 {x}^{2} + 16x - 24 =  \\ 8( {x}^{2}   + 2x - 3) = 8(x + 3)(x - 1) \\ 8(3.5 + 3)(3.5 - 1) = 8(6.5)(2.5) = 8 \times 2.5 \times 6.5 = 20 \times 65 \times  {10}^{ - 1} = 1300 \times  {10}^{ - 1} = 130 \\ and \: we \: are \: done.

i hope i have been useful buddy.

good luck ♥️♥️♥️♥️♥️.

6 0
3 years ago
I need help with this if your right I will mark you
shutvik [7]

Answer:

5.4 m

Step-by-step explanation:

18/3 = x/0.9

0.9(18/3) = x

x = 5.4

4 0
3 years ago
There are 4,200 adults in Lakeview. Three-eighths of the adults in Lakeview do not have children. How many adults in Lakeview ha
Inessa [10]

To answer this, you first have to find 3/8 of 4200 by multiplying those two numbers.

\frac{4200}{1} *\frac{3}{8}


First, multiply the numerators.

4200x3=12600

Next, multiply the denominators.

1x8=8

You end up with \frac{12600}{8}.

This fraction can be simplified to 1575.

All that's left is to subtract that number from 4200.

4200-1575=2625


The final answer is 2625 adults in Lakeview have children.


8 0
3 years ago
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