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4 years ago

Help a person out plsplsplspls

Mathematics

1 answer:

Serggg [28]4 years ago

7 0

youre answer is b

point slope formula is y-y1=m(x-x1)

m=slope

x1= coordinate x

y1= coordinate y

You might be interested in

b. Find a 99% confidence interval for mean age of ICU patients using the facts that, in the sample, the mean is 57.55 years and

rjkz [21]

Answer:

99% of confidence intervals for mean age of ICU patients

(53.8920 , 61.2079)

Step-by-step explanation:

Explanation:-

Given sample mean $x^{-} = 57.55$

Given standard error is determined by

S.E = $\frac{S.D}{\sqrt{n} }$

Given data standard error = 1.42

99% of confidence intervals for mean is determined by

$(x^{-} - Z_{0.01} \frac{S.D}{\sqrt{n} } , x^{-} + Z_{0.01} \frac{S.D}{\sqrt{n} } )$

$Z_{\frac{\alpha }{2} } = Z_{\frac{0.01}{2} } = Z_{0.05} = 2.576$

$(x^{-} - 2.576 S.E , x^{-} + 2.576 S.E)$

$(57.55 - 2.576X 1.42 , 57.55+ 2.576 X1.42)$

(53.8920 , 61.2079)

Conclusion:-

99% of confidence intervals for mean is determined by

(53.8920 , 61.2079)

5 0

3 years ago

DO NOT SKIP LETS SO WHOS SMART ENOUGH TO ANSWER THESE 2 PROBLEMS I CHALLENGE YOU!!

rodikova [14]

Q 16. The energy is 308.7 J.

Q 17. The energy is 896000 J.

Step-by-step explanation:

Q 16. Given,

Mass (m) of the carriage and baby = 1.5 kg

Height (h) = 21 m

To find the energy.

We will find the potential energy as it rests at the top.

Formula

Potential energy = mgh where g be the gravitational force of the earth = 9.8m/s²

So,

Energy = 1.5×9.8×21 J

= 308.7 J.

Hence,

The energy is 308.7 J.

Q 17. Given,

Mass (m) = 1120 kg

Speed (v) = 40 m/s

To find out the energy.

We will find out the kinetic energy as the car is in motion.

Formula

Kinetic energy = $\frac{1}{2}$ mv²

So,

Energy = $\frac{1}{2}$ ×1120×40² J

= 896000 J

Hence,

The energy is 896000 J.

7 0

4 years ago

Evaluate each expression.

Alex73 [517]

A is -11
B is -11
C is 54
Hope it helps

3 0

3 years ago

A map of California has a scale factor of 1 inch = 16 miles. The distance on the map from Riverside to Chula Vista is 3.5 inches

kvasek [131]

Answer:

56 miles

Step-by-step explanation:

7 0

3 years ago

A store sells a 1 1/4 pound package of turkey for 9$ What is the unit price of the turkey in the package?

noname [10]

Answer:

$7.20

Step-by-step explanation:

The first step is to convert 1 1/4 to decimal form. 1/4=0.25, which when added to the 1 gives a total weight of 1.25 pounds. Dividing this by the price to find the unit price, you get 9/1.25=$7.20 per pound of turkey. Hope this helps!

Step-by-step explanation:

4 0

3 years ago