What is 3(t-1) in word phrase ?

Mathematics

1 answer:

sleet_krkn [62]3 years ago

8 0

A term subtracted by 1, then multiplied by 3.

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There is a 10% chance of the mean oil-change time being at or below the sample mean for which there is an area of 0.10 to the

Zarrin [17]

The probability that a normally distributed data with a mean of μ and a standard deviation of σ is less than a value x is given by:

$P(X\ \textless \ x)=P\left(z\ \textless \ \frac{x-\mu}{\sigma} \right)$

Given that μ = 16.5 and σ = 0.804984 and that the probability that the mean oil-change time being at or below the sample mean for which there is an area of 0.10 to the left under the normal curve, then:

$P\left(z\ \textless \ \frac{x-16.5}{0.804984} \right)=0.1\\ \\ \Rightarrow P\left(z\ \textless \ \frac{x-16.5}{0.804984} \right)=P(z\ \textless \ -1.281) \\ \\ \Rightarrow\frac{x-16.5}{0.804984}=-1.281 \\ \\ \Rightarrow x-16.5=-1.281(0.804984)=-1.031 \\ \\ x=-1.031+16.5=15.47$

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4 years ago

the members of the drama club used .5 of the school gymnasium floor space to build a stage for a play. the drama club used .4 of

chubhunter [2.5K]

Hello,

If this is the case, i would division.

4 devided by 5 is 1 reminder 1.

Plz mark brainliest

*i think i got it right!*

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3 years ago

Andy currently runs a total of 12 miles each week. He plans to increase the number of miles he runs each week by 1.5 miles until

liubo4ka [24]

Answer:

$12+1.5x=26\\$

Step-by-step explanation: Andy already runs 12 miles. he will run an addition of 1.2 miles for X weeks. he want to run 26 miles each week. when you solve for x you get the amount of week it will take him to run 26 miles.

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vladimir1956 [14]

$(9+2i)(5-3i)\\\\=45-27i+10i-6i^2\\\\=45-17i+6~~~~~;[i^2 =-1]\\\\=51-17i$

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3 years ago

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Find the area of a triangle with legs that are: 15mm,10mm,20mm

balandron [24]

To calculate the area of triangle with three sides we use Heron's formula,
Area=sqrt(s(s-a)(s-b)(s-c))
where:
s=(a+b+c)/2
thus,
s=(15+10+20)/2
=22.5
hence the area will be:
Area=sqrt(22.5(22.5-15)(22.5-10)(22.5-20))
Area=sqrt(22.5*7.5*12.5*2.5)
=sqrt5273.4375
=72.62 mm^2

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3 years ago

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