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3 years ago

What is 3.47 rounded to the nearest tenth

Mathematics

2 answers:

PIT_PIT [208]3 years ago

7 0

That answer would be 3.5

Ksenya-84 [330]3 years ago

5 0

3.47 is 3.50 rounded to the nearest tenth.

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What is the value of MB between A and B?

nikdorinn [45]

Answer:

MB = 26

Step-by-step explanation:

AM = 2x - 3

MB = 5x + 1

AB = 21 - (-12)

= 21 + 12

= 33

According to the question M is between A and B. So,

$\rm \longrightarrow AB = AM + MB \\ \\ \rm \longrightarrow 33 = (2x - 3) + (5x + 1) \\ \\ \rm \longrightarrow 2x - 3 + 5x + 1 = 33 \\ \\ \rm \longrightarrow (2x + 5x) + (1 - 3) = 33 \\ \\ \rm \longrightarrow 7x - 2 = 33 \\ \\ \rm \longrightarrow 7x - 2 + 2 = 33 + 2 \\ \\ \rm \longrightarrow 7x = 35 \\ \\ \rm \longrightarrow \dfrac{7}{7} x = \dfrac{35}{7} \\ \\ \rm \longrightarrow x = 5$

$\therefore$ Value of MB = 5 × 5 + 1

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4 0

3 years ago

A game has an expected value to you of $100. it costs $500 to play, but if you win you receive $100,000 (including your $50

tekilochka [14]

Let $X$ be a random variable denoting the amount of winnings in any given round of the game. There is some probability $p$ of winning where $P(X=99,500)=p$ , while $P(X=-500)=1-p$ , assuming these are the only two possible outcomes. So we have

$\mathbb E[X]=\displaystyle\sum_xxP(X=x)=99,500p-500(1-p)=100$

$100,000p-500=100\implies p=\dfrac3{500}=0.006$

8 0

3 years ago