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lapo4ka [179]
3 years ago
8

Solve the following system of equations using the SUBSTITUTION method. Show all your work! x = 2y + 1 x + y = 4

Mathematics
1 answer:
Alexxandr [17]3 years ago
3 0

Answer:

Step-by-step explanation:

4x+y=14

x-2y=8

then;

x=8-2y

substitute;

4(8-2y)+8-2y=14

32-8y+8-2y=14

40-10y=14

26=10y

y=2.6 , work out 4x+2.6=14 to get x

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Nine less than the product of 2 and number is equal to 7​
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Answer:

x = 8

Step-by-step explanation:

Step 1: Write an equation

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Step 2: Use the Addition Property of Equality

2x = 16

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x = 8

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I’m having a lot of trouble, can someone guide me, step by step?
shutvik [7]

Answer:

Hi hopefully this helps you!

Step-by-step explanation:

To find the area of a circle you can use the formula A = πr^2

The radius of a circle is just the diameter divided by 2. In this case we know the diameter is 3, so the radius is 1.5

A = π(1.5)^2

   = 7.07

Because this is a semicircle, divide this area by 2

   = 3.53429 in^2

Add up the area of this semi circle with the area of the rectangle

A = (3.53429) + (3x4)

   = 15.53429 in^2

To find the circumference/ perimeter of a circle use this formula C = 2πR

C = 2π(1.5)

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Again because this is a semicircle, divide by 2

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To find the perimeter of this entire shape add up the circumference of the semicircle and the rectangle's sides and bottom

P = 4.71239 + 4 + 4 + 3

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So the final answer would be

A = 15.53 squared inches

P = 15.71 inches

Hope this helps! Best of luck in your studies <3

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Answer:

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Step-by-step explanation:

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