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3 years ago

Which algebraic expression represents the phrase six less than a number ?

Mathematics

1 answer:

zlopas [31]3 years ago

5 0

Answer:

Its quite simple. It's just x - 6

Step-by-step explanation:

Hope this helps!

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What is 2 of 7 metres?

loris [4]

Answer:

29ft 6.33070866

Step-by-step explanation:

9m / 0.3048

= 29.527559055ft

6 0

3 years ago

What is x/2.6=2? and explain why and how you got your answer .

Gnesinka [82]

Do the opposite of division which is multiplication. 2.6x2=5.2
I hope I did it correctly and that it benefits you ^^

3 0

3 years ago

A sport’s fan spent a total of $450 on baseball tickets. if only $4 and $5 tickets were bought, and there was an equal number at

Sindrei [870]

Equal number at each price?
does that mean there were an equal number of 4 dollar as 5 dollar tickets?

alrighty

so 4+5=9

450/9=50

50 four dollar tickets
50 five dollar tickets

4 0

3 years ago

Read 2 more answers

Three coins are tossed at the same time what is the probability that exactly 2 heads appear

oee [108]

You have 3 coins and you want 2 get heads, so you make the 2 and 3 a probability and you get 2/3

5 0

3 years ago

Show all your work. Indicate clearly the methods you use, because you will be scored on the correctness of your methods as well

laiz [17]

Answer:

The value is $P(A) = 0.133617$

Step-by-step explanation:

From the question we are told that

The mean is $\mu = 7.5$

The standard deviation is $\sigma = 0.2$

The safest water level is between 7.2 and 7.8

Generally the probability that the selected pool has a pH level that is not considered safe is mathematically represented as

$P(A) = 1 - P(7.2 \le X \le 7.8 )$

Here

$P(7.2 < X < 7.8 ) = P(\frac{ 7.2 - \mu }{\sigma } < \frac{X - \mu }{ \sigma }$

Generally $\frac{X - \mu }{ \sigma } = Z (The \ standardized \ value \ of X )$

$P(7.2 < X < 7.8 ) = P(\frac{ 7.2 - 7.5 }{0.2 } < Z$

$P(7.2 < X < 7.8 ) = P(-1.5 < Z$

=> $P(7.2 < X < 7.8 ) = P(Z < 1.5) - P( Z < - 1.5)$

From the z-table the probability of (Z < -1.5) and ( Z <1.5) are

$P(Z < 1.5) = 0.93319$

and

$P(Z < -1.5) = 0.066807$

$P(7.2 < X < 7.8 ) =0.93319 - 0.066807$

$P(7.2 < X < 7.8 ) =0.0866383$

$P(A) = 1 - 0.0866383$

=> $P(A) = 0.133617$

5 0

3 years ago