Use the equation n^2+n=56 to determine which figure has 56 blocks

Mathematics

2 answers:

Fudgin [204]3 years ago

6 0

Figure 7 has 56 blocks

Ivahew [28]3 years ago

4 0

Answer:

Figure 7 has 56 blocks

Step-by-step explanation:

On edgunity I got it right

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3 years ago

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ruslelena [56]

Answer:

Step-by-step explanation:

m∠BCD = 145° ⇒ m∠BCA = 180° - 145° = 35°

From ΔABC:

m∠ABC + m∠BCA + m∠BAC = 180°

65° + 35° + m∠BAC = 180°

m∠BAC = 180° - 100°