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Marysya12 [62]
3 years ago
13

30,45,x,100; the mean is 60

Mathematics
2 answers:
Andrei [34K]3 years ago
6 0

if there are 4 numbers that average to 60, when mutiplied they must come up to: 60*4= 240

100+30+45= 175

240-175= 65

PROOF:

100+30+45+65= 240

240÷ 4

= 60

soldier1979 [14.2K]3 years ago
6 0

Answer:

x=65

Step-by-step explanation:

Mean= <u>s</u><u>u</u><u>m</u><u> </u><u>o</u><u>f</u><u> </u><u>t</u><u>e</u><u>r</u><u>m</u><u>s</u>

number of terms

60=<u>3</u><u>0</u><u>+</u><u>4</u><u>5</u><u>+</u><u>x</u><u>+</u><u>1</u><u>0</u><u>0</u>

4

240=<u>1</u><u>7</u><u>5</u><u>+</u><u>x</u>

x=240-175

=65

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