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pav-90 [236]
3 years ago
11

Neddddd helpp plzzz really asap

Mathematics
2 answers:
Nezavi [6.7K]3 years ago
7 0

Answer:

  • 2(x+3)

hope it helps.

<h3>stay safe healthy and happy.</h3>
ryzh [129]3 years ago
5 0

Answer:

2*x3

Step-by-step explanation:

* mean's tims

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The total cost of painting of four walls of a square hall at Rs. 40 per sq. m. is Rs. 12000. If the hall contains 600 m³ of air,
astra-53 [7]

Answer:

The height of the hall is 9.375 meters

Step-by-step explanation:

The rate at which the walls of the square hall are painted, R = Rs. 40 per sq. m.

The total cost of painting the square hall, C = Rs. 12,000

The volume of air contained in the hall, V = 600 m³

The surface area of the four walls of the hall, A = C/A

∴ A = Rs. 12,000/(Rs. 40/m²) = 300 m²

Let 's' represent the length of sides of the square hall, and let 'h' represent the height of the square wall, we have;

The volume of the hall, V = s² × h

The surface area of the wall, A = 4 × s × h

Therefore, we get;

A = 300 = 4 × s × h

V = 600 = s² × h

V/A = 600/300 = 2 = s² × h/(4 × s × h) = s/4

s/4 = 2

s = 4 × 2 = 8

The side length of the square hall, s = 8 m.

From the area, A = 4 × s × h, we get;

A = 300 = 4 × 8 × h

h = 300/(4 × 8) = 9.375

The height of the hall, h = 9.375 m.

8 0
3 years ago
Find the length of EF
Lisa [10]

Answer:

9

Step-by-step explanation:

1. First, we need to set up an equation to find the value of x and then the length of EF.

2. We know that DG is equal to 33, so we can add all the three sections it's cut into altogether to get 33. Therefore, we get an equation of: 3x - 28 + 3x - 30 + x = 33

3. (Solving for x)

Step 1: Simplify both sides of the equation.

  • 3x - 28 + 3x - 30 + x = 33
  • (3x+3x+x) + (-28-30)=33
  • 7x - 58 = 33

Step 2: Add 58 to both sides.

  • 7x - 58 + 58 = 33 + 58
  • 7x = 91

Step 3: Divide both sides by 7.

  • \frac{7x}{7} = \frac{91}{7}
  • x = 13

4. Now that we know x is equal to 13, we can plug that value in for the expression 3x - 30.

  • 3(13)-30
  • 39 - 30
  • 9

Therefore, the length of EF is 9.

7 0
3 years ago
Debbie cut cord to sixths she is five of the pieces to make necklaces she used equal length of the remaining cord for each of fo
Anettt [7]

Answer:

¹/₂₄  

Step-by-step explanation:

Debbie used ⅚ of the cord for necklaces.

That left ⅙ of the cord for four bracelets.

Each bracelet used:

Fraction of cord = ⅙ ×¼ = ¹/₂₄

Debbie used ¹/₂₄ of the cord for each bracelet.

7 0
2 years ago
Combine Like Terms and Eliminate Parenthesis.<br>5z-[2z-(13z+8)]
katen-ka-za [31]

We need to start from the innermost parenthesis and work our way out.

The first parenthesis is 13z+8. These are not like terms because one involves a variable, while the other is a constant term. Two terms are summable if they involve the same power(s) of the same variable(s).

So, we can take one step outwards, and we arrive to the square brackets. We have

2z-13z-8

and 2z and -13z are like terms, so we can sum them:

2z-(13z +8) = 2z-13z-8 = (2-13)z-8 = -11z-8

Finally we arrive to the whole expression, which is

5z-(-11z-8) = 5z+11z+8 = (5+11)z+8=16z+8

Because, again, 5z and 11z were like terms.

6 0
3 years ago
Amelia makes necklaces using beads and wire. She starts with 6 feet of wire. How many necklaces can she make?
navik [9.2K]

If  Amelia  starts with 6 feet of wire, the amount of necklaces that she can make is 18.

<h3>What is the necklaces  about?</h3>

Jewelry wire is known to be a kind of a wire that can be either a copper, brass, or others that are often used in jewelry making.

Note that  Wire is seen today as a single unit, and it is also seen to be cylindrical, elongated part of drawn metal.

Using the table:

6  ÷ 1/3

= 6 x 3

= 18

Therefore, If  Amelia  starts with 6 feet of wire, the amount of necklaces that she can make is 18.

Therefore, option A is correct.


Learn more about Wiring from

brainly.com/question/14792853

#SPJ1

8 0
1 year ago
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