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ELEN [110]
3 years ago
15

5 times the sum of a number and 4 equals 9

Mathematics
1 answer:
goblinko [34]3 years ago
5 0

Answer:

-2.2

Step-by-step explanation:

By using the equation 5*(4+x)=9, when you isolate x you get -2.2.

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a square field has a side 150 m long .There is a road 5 m wide all around the park outside it .Find the cost of constructing the
alisha [4.7K]

Answer:

Cost to construct the road = 775000 rupees

Step-by-step explanation:

Square field has a side = 150 m

Area of the field = (Side)²

                           = (150)²

                           = 22500 m²

Length of the park with road around the field = 150 + 2×(width of the road)

                                                                            = 150 + (2×5)

                                                                            = 160 m

Similarly, width of the park with road around the field = 160 m

Area of the park with road = (Side)²

                                            = (160)²

                                            = 25600 m²

Area of road = Area of the park with road - Area of the park

                     = 25600 - 22500

                     = 3100 m²

Since, cost of constructing the road = 250 rupees per square meter

Cost to construct the road with the given area = 250 × 3100

                                                                              = 775000 rupees

6 0
2 years ago
Evaluate 14 + (-2). (1 point)<br> O<br> 16<br> -16<br> O<br> -12<br> 12
rewona [7]
The answer to 14+(-2) is 12
6 0
2 years ago
Solve for E: <br> E=〖mc〗^2<br> m = 3<br> c = 6
rewona [7]

Answer:

E  =  324

Step by step explanation:

4 0
2 years ago
Read 2 more answers
*How can I find the sum of -5 + 12 using a vertical number line? *
antoniya [11.8K]
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4 0
3 years ago
When the function ƒ(x) = 4x−2 is evaluated for x = 3, the output is:<br> -4<br> -6<br> -16<br> -none
Mkey [24]

Answer:

None

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Algebra I</u>

  • Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = 4x - 2

x = 3

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em> [Function]:                                                                                f(3) = 4(3) - 2
  2. Multiply:                                                                                                             f(3) = 12 - 2
  3. Subtract:                                                                                                            f(3) = 10
7 0
2 years ago
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