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3 years ago

Help ASAP please PLS

Mathematics

2 answers:

Ahat [919]3 years ago

5 0

Answer:

-103

Step-by-step explanation:

Just subtract

Papessa [141]3 years ago

5 0

Answer:

-103

Step-by-step explanation:

You add all the numbers then put the negative sign.

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The operations manager of a large production plant would like to estimate the mean amount of time a worker takes to assemble a n

xz_007 [3.2K]

Answer:

(15,595, 16,805)

Step-by-step explanation:

We have to:

m = 16.2, sd = 3.75, n = 150

m is the mean, sd is the standard deviation and n is the sample size.

the degree of freedom would be:

n - 1 = 150 - 1 = 149

df = 149

at 95% confidence level the t is:

alpha = 1 - 95% = 1 - 0.95 = 0.05

alpha / 2 = 0.05 / 2 = 0.025

now well for t alpha / 2 (0.025) and df (149) = t = 1,976

the margin of error = E = t * sd / (n ^ (1/2))

replacing:

E = 1,976 * 3.75 / (150 ^ (1/2))

E = 0.605

The 95% confidence interval estimate of the popilation mean is:

m - E <u <m + E

16.2 - 0.605 <u <16.2 + 0.605

15,595 <u <16,805

(15,595, 16,805)

5 0

3 years ago

19.5+24+7.5 = 19.5+__+24 = ___+24+___=

krek1111 [17]

See attached photo for solution

please give a thanks or brainliest if you found my answer helpful :)

8 0

3 years ago

Simplify the expression and write the answer as a power with work please

olga nikolaevna [1]

Answer:

9^2

Step-by-step explanation:

we do 3*3 which is 9, and then 9 to the second power

6 0

3 years ago

Read 2 more answers

What is the scale factor from ADEF to AABC? 10 6 20 12 А 7 14

tigry1 [53]

Answer:

The scale factor is 1/2

Step-by-step explanation:

Given

$\triangle DE F$ and $\triangle ABC$

Required

The scale factor from $\triangle DE F$ to $\triangle ABC$

Take a corresponding side in both triangles.

We have:

$DE= 20$ $AB = 10$

The scale factor from $\triangle DE F$ to $\triangle ABC$ is:

$k =\frac{AB}{DE}$

$k =\frac{10}{20}$

$k =\frac{1}{2}$

8 0

3 years ago

Which expressions is equivolent to 6[3+2x4] ?

nordsb [41]

Im not exactly sure what you are asking but 18 + 48 is equivalent and simplified!

4 0

4 years ago

Help ASAP please PLS​

Help ASAP please PLS