3 years ago

I keep getting this wrong I need help

Mathematics

1 answer:

xenn [34]3 years ago

4 0

5 to the zero power is 1

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it would take 21 minutes per mile

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4 years ago

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Write a word phrase for the following algebraic expression: 8n-3.

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eight times n minus three.

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7b-2/5=6b-7/5 nudfghnkdfbvugyteugdyvbbbvybhjedfs

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3 years ago

Let X denote the number of bars of service on your cell phone whenever you are at an intersection with the following probabiliti

ZanzabumX [31]

Answer:

a. $P(2 \leq X \leq 3) = 0.5$

b. $P(X \geq 1) = 0.9$

c. $P(X < 2) = 0.25$

d. $P(X > 3) = 0.25$

Step-by-step explanation:

We are given the following distribution:

$P(X = 0) = 0.1$

$P(X = 1) = 0.15$

$P(X = 2) = 0.25$

$P(X = 3) = 0.25$

$P(X = 4) = 0.15$

$P(X = 5) = 0.1$

a. Two or three bars

$P(2 \leq X \leq 3) = P(X = 2) + P(X = 3) = 0.25 + 0.25 = 0.5$

Thus:

$P(2 \leq X \leq 3) = 0.5$

b. At least one bar

$P(X \geq 1) = 1 - P(X = 0) = 1 - 0.1 = 0.9$

Thus:

$P(X \geq 1) = 0.9$

c. Fewer than two bars

$P(X < 2) = P(X = 0) + P(X = 1) = 0.1 + 0.15 = 0.25$

Thus:

$P(X < 2) = 0.25$

d. More than three bars

$P(X > 3) = P(X = 4) + P(X = 5) = 0.15 + 0.1 = 0.25$

Thus:

$P(X > 3) = 0.25$

7 0

3 years ago

I really need help with this

ElenaW [278]

Number of boys:
1000/2+20/2=510
Number of girls:
1000/2-20/2=490
510 boys and 490 girls competed at Special Olympics

5 0

4 years ago