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2 years ago

This is confusing I need help .

Mathematics

1 answer:

Fittoniya [83]2 years ago

8 0

Answer:

x = 54
angle ACD = 124°

Step-by-step explanation:

The rule is that the exterior angle (ACD) is equal to the sum of the remote interior angles (the two marked angles on the right).

You are expected to use this relation to write and solve an equation.

exterior angle = angle D + angle B

(2x +16) = 58 + (x+12)

2x +16 = x +70

x + 16 = 70

x = 54

Then angle ACD is ...

angle ACD = (2x +16)° = (2·54 +16)°

angle ACD = 124°

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Step-by-step explanation:

Let x and y represent the cost of a cupcake and cookie respectively.

Given that;

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Let's solve the simultaneous equation by elimination;

Multiply equation 1 by 2;

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Since we have the value of x, let substitute into equation 1 to get y;

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