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3 years ago

Translate each sentence into an equation.

Mathematics

2 answers:

d1i1m1o1n [39]3 years ago

8 0

1). n+3=8
2). 2-3n=11
3). 1/4+x
4). 2x-1=12
5). 5x = 9x

AveGali [126]3 years ago

8 0

Some of the answers that the other user put are wrong.
These are the correct ones
1)n+3=8
2)3n-2=11
3) 1/4x+7=x
4)2x-1=12
5) 2(x+5)=9x

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Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 2800 grams and a standard deviation of 900

ipn [44]

Answer:

The 34 week gestation's period baby weighs 0.11 standard deviations below the mean.

The 41 week gestation's period baby weighs 0.24 standard deviations below the mean.

A. The baby born in week 40 does since its z-score is smaller.

Step-by-step explanation:

Normal model problems can be solved by the zscore formula.

On a normaly distributed set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a value X is given by:

$Z = \frac{X - \mu}{\sigma}$

The zscore represents how many standard deviations the value of X is above or below the mean[/tex]\mu[/tex]. Whoever has the lower z-score weighs relatively less.

Find the corresponding z-scores.

Babies born after a gestation period of 32 to 35 weeks have a mean weight of 2800 grams and a standard deviation of 900 grams. A 34-week gestation period baby weighs 2700 grams.

Here, we have $\mu = 2800, \sigma = 900, X = 2700$ .

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{2700 - 2800}{900}$

$Z = -0.11$

A negative z-score indicates that the value is below the mean.

So, the 34 week gestation's period baby weighs 0.11 standard deviations below the mean.

Babies born after a gestations period of 40 weeks have a mean weight of 3400 grams and a standard deviation of 425 grams. A 40-week gestation period baby weighs 3300 grams.

Here, we have $\mu = 3400, \sigma = 425, X = 3300$

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{3300- 3400}{425}$

$Z = -0.24$

So, the 41 week gestation's period baby weighs 0.24 standard deviations below the mean.

Which baby weighs relatively less?

A. The baby born in week 40 does since its z-score is smaller.

5 0

3 years ago

What is the mean of this data set? 12, 14, 16, 17, 18, 25

amm1812

17. you add all numbers together and divide them by however many numbers you had to add to get that number.

4 0

2 years ago

A polynomial is factored using algebra tiles. What are the factors of the polynomial?

zysi [14]

Answer: the answer is B

Step-by-step explanation:

7 0

3 years ago

In the relationship shown by the data linear ? If so , model the data with an equation A. The relationship is not linear B. The

dybincka [34]

Let's take two points so that we can get the equation of the line which goes through those points. P1 (-9, -2), P2 (3, -17):

$m=\frac{y_2-y_1}{x_2-x_1}=\frac{-17-(-2)}{3-(-9)}=\frac{-17+2}{3+9}=-\frac{15}{12}=-\frac{5}{4}$ $\begin{gathered} y-y_1=m(x-x_1) \\ y-(-2)=-\frac{5}{4}\cdot(x-(-9)) \\ y+2=-\frac{5}{4}\cdot(x+9)_{} \\ y=-\frac{5}{4}x-\frac{45}{9}-2 \\ y=-\frac{5}{4}x-7 \\ f(x)=-\frac{5}{4}x-7 \end{gathered}$

So, y is the line which goes through the first and last points of the chart.

To proof that the rest of points go through the line as well, we will evalute each point

$\begin{gathered} f(-5)=-\frac{5}{4}\cdot(-5)-7=\frac{25}{4}-7=-\frac{3}{4}\ne-7 \\ f(-1)=-\frac{5}{4}(-1)-7=\frac{5}{4}-7=-\frac{23}{4}\ne-12 \end{gathered}$

Since the evaluation of these points don't correspond to the values of the chart we can assure that the relationship is not linear

7 0

2 years ago

Find the slope given the points (2, −7) and (−1,<br> 6).

lesya [120]

Answer:

The Slope= -13/3

y-intercept= (0,5/3)

Step-by-step explanation:

m= change in y/change in x

m= y2-y1/x2-x1

m=6-(-7)/ -1-(2)

m=-13/3

4 0

3 years ago