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Tomtit [17]
2 years ago
14

Can anyone help? please ​

Mathematics
1 answer:
kirill115 [55]2 years ago
5 0

Step-by-step explanation:

BCD = 180- 100 = 80

the opposite angles of a parallelogram are of equal measure

SO DAB = X = 80

The sum of all parallelogram angles = 360

360 - 160 = 200

200 equals the measure of angle ADC + ABC

ABC = ADC

200 = 2ABC

ABC = 100

ADB = DBC = 30

Y = 100 - 30 = 70

another way to find y is using the rule that says that the sum of the triangle ADB angles = 180

180 = 80 + 30 + y

y = 70

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Answer:

(a) 71.00%

(b) 63.00%

Step-by-step explanation:

No optional features = 0.29

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3 years ago
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Answer:

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3 years ago
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Answer:

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Step-by-step explanation:

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We can multiply the first equation by -2. We then have an equation containing + 2x2 so when we add this to the second equation the 2x2 will be eliminated

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