hahahalol43
Answered

Mary has scored 78 , 60 , 82 , 94 , and 88 on her previous five tests . What score does she need on her next test so that her average ( mean ) is 80?​

Answer :

vanessaakaraiwe123

Answer:

She needs to score 78 on her next test

Step-by-step explanation:

[tex]\frac{78+60+82+94+88+x}{6}=80[/tex]

Collect like terms;

[tex]\frac{402+x}{6}=80[/tex]

Multiply both sides by 6;

402 + x = 480

Subtract 402 from both sides;

x = 78

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