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den301095 [7]
3 years ago
15

Five times the difference of a number and 2 is the same as 2 increased by five times the number plus twice the number. Find the

number.
Mathematics
2 answers:
Makovka662 [10]3 years ago
8 0

Welcome to Brainly!

5(n-2) = 2+5n + 2n fits your equation.  After multiplication, we have

5x - 10 = 2 + 7n

Combining like terms, we get:

-12 = 2n, so that n = -6.


sergejj [24]3 years ago
7 0

Answer:

5(n-2) = 2+5n + 2n fits your equation.  After multiplication, we have

5x - 10 = 2 + 7n

Combining like terms, we get:

-12 = 2n, so that n = -6

Step-by-step explanation:

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One gallon of paint covers 400 square feet of surface area. A typical spherical water tower holds 66,840.28 cubic feet of water.
fredd [130]

Answer:

They would need approximately 20 gallons of paint for the water tower, so yes, 25 gallons would be enough.

Step-by-step explanation:

In order to find out if there is enough paint for the surface area of the sphere, you need to first find the radius of the object so you can determine the measure of the entire surface area.  Since they give us the volume, we can use that to solve for the radius using the volume formula:  V = πr³  or 66840.28 = πr³.  Using inverse operations, you can first multiply both sides of the equation by the reciprocal of 4/3 or 3/4, then divide by π, this gives you 15,965 = r³.  In order to find 'r', take the cube root of both sides:  ∛15965 = ∛r³  or r ≈ 25.

Now that you know radius = 25, you can use the formula for surface area:  SA = 4πr²  or 4π(25)² ≈ 7850 ft².  Since one gallon of paint covers 400 square feet, we can take our total and divide by 400 to find the number of gallons:  7850 ÷ 400 ≈ 19.6.  In total, we would need 19.6 gallons of paint for the water tower, so if there are 25 gallons available, there is enough.


3 0
2 years ago
Someone please help me on math please
Ratling [72]
The answer is 0.12 millimeters because if you multiplied the numbers it would give you 0.12 mm hope this is correct
5 0
2 years ago
How do you solve n-8=17​
Alexxandr [17]

Answer:

n = 25

Step-by-step explanation:

Add  to both sides.

n = 17 + 8 = 25

3 0
3 years ago
Read 2 more answers
Which polygon has the most sides? pentagon nonagon hexagon octagon
spin [16.1K]

Answer:

nonagon - 9

Step-by-step explanation:

  • pentagon - 5
  • nonagon - 9
  • hexagon - 6
  • octagon - 8
6 0
2 years ago
Read 2 more answers
Two angle measures of a triangle are given what is the third angle measure 57 68 _ 90 40 __ 29 71 _
nexus9112 [7]
Sum\ of\ angles\ in\ triangle\ is\ 180^{\circ}\\\\
57^{\circ},68^{\circ},x\\
57+68+x=180\\
125+x=180\\
x=55^{\circ}\\\\
90^{\circ},40^{\circ},x\\
90+40+x=180\\
130+x=180\\
x=50^{\circ}\\\\29^{\circ},71^{\circ},x\\
29+71+x=180\\
100+x=180\\x=80^{\circ}
3 0
3 years ago
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