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Elodia [21]
3 years ago
6

One-third of a number added to itself equals 3 times the difference of the number and seven.

Mathematics
1 answer:
olya-2409 [2.1K]3 years ago
3 0

Answer:

Step-by-step explanation:

Do this step by step.

Let the number = x

1/3 of a number = 1/3 x

Added to itself 1/3x + x

=

3*(x - 7)

So the equation is

1/3x  + x = 3(x - 7)            Remove the brackets. Collect 1/3x and x

4/3 x = 3x - 21                 Multiply both sides by 3.

4x = 3*(3x - 21)                Remove the brackets again

4x = 9x - 63                    Subtract 9x from both sides

-5x = -63                         Divide by -5

x = -63/-5

x = 12.6

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The formula for the surface area of a rectangular prism with a square base is SA = 2s2 + 4sh. What is the surface area of this r
Harman [31]

Answer:

90

Step-by-step explanation:

Step 1: Given data

Side of the rectangular prism (s): 3

Height of the rectangular prism (h): 6

Step 2: Calculate the surface area (SA) of the base

We will use the following expression, replacing the values for s and h.

SA = 2 × s² + 4 × s × h

SA = 2 × 3² + 4 × 3 × 6 = 90

The units are not provided but the SA should have the same units as s and h, but raised to the power of 2.

7 0
3 years ago
When a food distributor considers changing the products it markets in the southern states because of an increasing percentage of
Hitman42 [59]

Answer:

The answer is demographic.

Step-by-step explanation:

When a food distributor considers changing the products it markets in the southern states because of an increasing percentage of customers from Central and South America, it is examining the DEMOGRAPHIC forces at work in the southern United States.

7 0
3 years ago
[|(x-4)÷(x+5)|]\leq[4]
Katena32 [7]

Answer:

Solutions are;

x = -8

x = -3.2

Step-by-step explanation:

Here, we want to solve the given equation for x

|(x-4)/(x + 5)| = 4

From what we have, this is an absolute value equation and thus, we are going to have two solutions

These are;

x-4/x+ 5 = 4

x-4 = 4(x + 5)

x-4 = 4x + 20

x-4x = 20 + 4

-3x = 24

x = -24/3

x = -8

secondly;

x-4/x+5 = -4

x-4 = -4(x + 5)

x-4 = -4x - 20

x + 4x = -20 + 4

5x = -16

x = -16/5

x = -3.2

3 0
3 years ago
so my teacher ask the class a question one of those questions i didn't understand so i came on brainly.com and know i want to no
Zigmanuir [339]
56 times 2 is 112. But if you have a device to access brainly on, then I'm sure you have a calculator.
6 0
3 years ago
Read 2 more answers
Help me i really need this .no spam​
Naya [18.7K]

<u>Question</u> : 8

11 \sqrt{5}  + 4 \sqrt{7}

<u>Question</u> : 9

  • x =  - 1
  • y =  - 3

<u>Question</u> : 11

  • LHS isn't equal to RHS

<u>Question</u> : 12

  • x =  \dfrac{ \sqrt{3} }{2 \sqrt{2} }

Solution is in attachment ~

4 0
3 years ago
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