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3 years ago

15

If radio station call letters must begin with either K or W and must include either two or three additional letters, how many d

ifferent possibilities are there?

1 answer:

stiks02 [169]3 years ago

5 0

Answer:

I think infinite

Step-by-step explanation:

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Convert 140° from degree measure to radians

larisa86 [58]

Answer:

7pi/9

Step-by-step explanation:

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3 years ago

Ella’s test grades in her history class are 89, 94, 82, 84, and 98. What score must Ella make on her next test to have a mean te

Stells [14]

Answer:

the answer is 93

Step-by-step explanation:

mean of x,y,z

x+y+z

3 terms

(x+y+z)/3=mean

so

represent next test score as x

89+94+82+84+98+x

count how many terms ther are (6 terms)

mean is 90

(89+94+82+84+98+x)/6=90

add the like terms

(447+x)/6=90

multiply both sides by 6 to clear fraction

447+x=540

subtract 447 from both sides

x=93

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2 years ago