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Andre45 [30]
3 years ago
14

1/5x +1/4= 1/2(x+5) please answer this question for 18 points

Mathematics
1 answer:
BigorU [14]3 years ago
7 0

Answer:

x=-7.5

Step-by-step explanation:

First you distribute

1/5x + 1/4 = 1/2x + 2.5

Then you subtract 1/5x from both sides

1/4 = 0.3x + 2.5

Then you subtract 2.5 on both sides

-2.25=0.3x

You divide 0.3 on both sides to get x by itself

-7.5=x

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A rectangle has an area of 7.1m2(squared). One of the sides is 0.1m in length. Work out the perimeter of the rectangle.
Liono4ka [1.6K]

L = length = unknown

W = width = 0.1 meters

A = area = 7.1 square meters

Use the formula for an area of a rectangle. Isolate L

A = L*W

7.1 = L*0.1

0.1*L = 7.1

L = 7.1/0.1

L = 71

The rectangle has a length of 71 meters and a width of 0.1 meters (which multiply to an area of 7.1 square meters)

Now use the perimeter formula

P = 2*(L+W)

P = 2*(71+0.1)

P = 2*71.1

P = 142.2

Or you can add up the four sides 71, 71, 0.1, 0.1 and you'll get the same answer.

<h3>Final Answer: 142.2 meters</h3>
5 0
4 years ago
Help pls ill mark brainliest
Naily [24]

Answer:

A. 2,310 sq ft

Step-by-step explanation:

<u>R</u><u>e</u><u>c</u><u>t</u><u>e</u><u>n</u><u>g</u><u>l</u><u>e</u><u> </u><u>b</u><u>e</u><u>l</u><u>o</u><u>w</u><u>:</u>

  • A = l × b
  • A = 74 × 15
  • A = 1,110ft

<u>Rectangle Above</u><u>:</u>

  • A = l × b
  • A = 50 × 24
  • A = 1,200ft

<u>A</u><u>r</u><u>e</u><u>a</u><u> </u><u>o</u><u>f</u><u> </u><u>t</u><u>h</u><u>e</u><u> </u><u>P</u><u>l</u><u>a</u><u>y</u><u>g</u><u>r</u><u>o</u><u>u</u><u>n</u><u>d</u><u>:</u>

  • 1,110ft + 1,200ft
  • 1,310 sq ft (A)
3 0
2 years ago
What is the answer to p+12 =-18
MariettaO [177]

Answer:

p=-30

Step-by-step explanation:

p+12=-18

subtract 12 on both sides and you get p=-30

Hope this helps!!

3 0
3 years ago
Read 2 more answers
4(x+6)-3x=26 what is the x value
satela [25.4K]

Answer:

x=2

Step-by-step explanation:

4 (x + 6) - 3x = 26

solve the parenthesis

4x + 24 - 3x = 26

subtract 24 from both sides to get x by itself

4x - 3x = 2

solve

x = 2

4 0
3 years ago
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Can the sum of two mixed numbers be equal to 2? ​
Sholpan [36]
No it depends on the sum of the two numbers
4 0
3 years ago
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