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atroni [7]
3 years ago
5

Find the perimeter of the shape 5cm 6cm 17cm 8cm Perimeter = [perimeter] cm

Mathematics
1 answer:
exis [7]3 years ago
8 0
To find perimeter you add up all the sides so 5cm+6cm+17cm+8cm. This will get you 36cm.
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Solve the simultaneous equations
Contact [7]

Answer:

The solution for given system of equations is: x = 6 and y = 3

Or

(6,3)

Step-by-step explanation:

Given equations are:

3x+4y=30\ \ \ Eqn\ 1\\3x-y=15\ \ \ \ Eqn\ 2

There are three methods to solve simultaneous equations

  1. Elimination
  2. Substitution
  3. Co-efficient method

We will use the elimination method as the coefficients of x in both equations are already same

Subtracting equation 2 from equation 1

3x+4y - (3x-y) = 30-15\\3x+4y-3x+y = 15\\5y = 15\\\frac{5y}{5} = \frac{15}{5}\\y = 3

Putting y = 3 in equation 2

3x-3 = 15\\3x = 15+3\\3x = 18\\\frac{3x}{3} = \frac{18}{3}\\x =  6

Hence,

The solution for given system of equations is: x = 6 and y = 3

Or

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7 0
3 years ago
Twice a number is 12 more than 5 times the number.
stira [4]

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Step-by-step explanation:

<u>Let the number be x:</u>

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It is -4

5 0
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What shape do degree 3 functions have?
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Answer: Third degree polynomials are also known as cubic polynomials. Cubics have these characteristics: One to three roots. Two or zero extrema.

HOPE THIS HELPS

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3 years ago
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Step-by-step explanation:

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3 years ago
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