queenkimm26
Answered

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Jane has earned a 91, 85, and 84 on her first three quizzes of the semester. If she hopes to have an A quiz average (90 or above), what is the lowest score Jane can make on her fourth and final quiz?


She cannot earn an A quiz average*****

100

97

95

Sagot :

Answer:

100

Step-by-step explanation:

Calculation

Let mark to be scored in fourth =x

but since the total will be more or above we will have the sign

[tex] \geqslant [/tex]

[tex]91 + 85 + 84 + x \div 4 \geqslant 90[/tex]

[tex]260 + x \div 4 \geqslant 90[/tex]

L.c.m =4 ( cross multiplying)

260+xtex 90*4

260+xtex 360

x tex 360-260

x tex 100

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