Myra is evaluating the expression –31.7 + 4.5x, when x = 2.1.

Mathematics

2 answers:

Roman55 [17]3 years ago

6 0

Answer is b myra should have multiplied 4.5 and 2.1 first.

Nina [5.8K]3 years ago

5 0

B Myra should have multiplied 4.5 and 2.1 first.

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HELP PLEASE!

Nataliya [291]

The answer is C.

The probability of a hit is 127/369 This includes home runs.The probability of a home run is 21/369 = 7/123The probability of a hit that is not a home run is (127-21)/369 = 106/369The probability of no hit is (369-127)/369 = 242/369 Now,If Miguel hits a home run, he'll score 5 pointsIf Miguel has a hit that is not a home run, he'll score 1 pointIf Miguel does not get a hit, he'll score 0 points. Expected value of his score at each at bat is(0) 242/369 + (1) 106/369 + (5) 21/369106/369 + 105/369 = 211/369 = .57

7 0

4 years ago

Please help!! ill give brainliest!!! this is worth 30 points!!!!!!!!

Svetlanka [38]

Answer: a. 45 = k

b. d/t = 45

c. d = 45t

<u>Step-by-step explanation:</u>

The constant of proportionality (k) equals y divided by x if it is a direct variation. In the given problem, y is represented by distance (d) and x is represented by time (t).

$a)\quad \dfrac{d}{t}=k\\\\\\.\qquad \dfrac{90}{2}=k\\\\\\.\qquad 45=k\\\\\\b)\quad \dfrac{d}{t}=k\\\\\\.\ \quad \dfrac{d}{t}=45\\\\\\c)\quad \text{multiply both sides by t:}\\.\qquad d=45t$