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3 years ago

15

Right now could you help me on my rounding the nearest hundred

1 answer:

kari74 [83]3 years ago

3 0

Yes.

-- Look at the tens digit.
-- If it's 5 or more, add ' 1 ' to the hundreds digit.
-- If it's 4 or less, leave the hundreds digit alone.
-- Make the tens digit and the ones digit both zero.

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A car, initially at rest, accelerates at 2 meters/s/s. assuming the car starts from rest, how far will it travel in 10 s?

MrRa [10]

We shall use the formula for distance traveled:
s = ut + (1/2)at^2
where
u = initial velocity
t = time
a = acceleration.

Because
u = 0 (car starts from rest),
t = 10 s (travel tme),
a = 2 m/s^2 (acceleration), m
the di mstance traveled is
s = (1/2)*(2 m/s^2)*(10 s)^2 = (1/2)*2*100 = 100

Answer: 100 m

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3 years ago

In a recent year, a sample of grade 8 Washington State public school students taking a mathematics assessment test had a mean sc

Daniel [21]

Answer:

The number is $N =1147$ students

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 281$

The standard deviation is $\sigma = 34.4$

The sample size is n = 2000

percentage of the would you expect to have a score between 250 and 305 is mathematically represented as

$P(250 < X < 305 ) = P(\frac{ 250 - 281}{34.4 } < \frac{X - \mu }{\sigma } < \frac{ 305 - 281}{34.4 } )$

Generally

$\frac{X - \mu }{\sigma } = Z (Standardized \ value \ of \ X )$

So

$P(250 < X < 305 ) = P(-0.9012< Z$

$P(250 < X < 305 ) = P(z_2 < 0.698 ) - P(z_1 < -0.9012)$

From the z table the value of $P( z_2 < 0.698) = 0.75741$

and $P(z_1 < -0.9012) = 0.18374$

$P(250 < X < 305 ) = 0.75741 - 0.18374$

$P(250 < X < 305 ) = 0.57$

The percentage is $P(250 < X < 305 ) = 57\%$

The number of students that will get this score is

$N = 2000 * 0.57$

$N =1147$

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3 years ago

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lesya [120]

Answer:3x+5y=210

Step-by-step explanation:

We dont know how much of each fish they bought so we would add an x and a y. A answer you can put are:

35 pounds of tilapia and 21 pounds of salmon.

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Timothy stated that the sum of 0.9 + (-9/10) was 18/20.

Evgesh-ka [11]

Answer:

18/10

Step-by-step explanation:

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Eddi Din [679]

The pair of numbers that would have 20 as their lcm is 4 and 5

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