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3 years ago

14

A student earns scores of 80, 87, and 82 on the first three of four tests. If the student wants to achieve a quiz average of 85,

what score must she achieve on the last quiz?

1 answer:

aleksandrvk [35]3 years ago

5 0

Answer:

91

Step-by-step explanation:

85= $\frac{80+87+82+x}{4}$ then multiply the 4 over and subtract 80, 87, and 82 to find x which gives you 91

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bija089 [108]

Answer:

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Answer:

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3 years ago

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3 years ago

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sveticcg [70]

Answer:

<em>The old photo frame is still rectangular</em>

Step-by-step explanation:

<u>Rectangles</u>

The rectangle shape can be identified because it has 4 internal angles of 90° each. The diagonal forms with two adjacent sides a right triangle where the Pythagora's Theorem must stand. Being a and b the length of the sides of the rectangle and d the diagonal, then:

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3 years ago