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Ludmilka [50]
3 years ago
15

Find the valu B 6 8 A Х D 4 С x = [?]

Mathematics
1 answer:
AnnyKZ [126]3 years ago
8 0

Answer:

hmm... A is the answer but if anything comes up tell me

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Felicity the unicorn is in the forest. She is enjoying a delicious melon. A weasel grabs the melon out of her mouth and starts t
pshichka [43]

Answer:

21 animals in the forest

Step-by-step explanation:

The weasel

Felicity

The 19 other animals

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7 0
3 years ago
A formula for finding P, the perimeter of a rectangle, is P = 2l + 2w, where l is the length of the rectangle, and w is its widt
Varvara68 [4.7K]

Answer:

P=30cm

Step-by-step explanation:

So the formula there is to find the Perimeter of the rectangle, so we are going to use it!

Using Substitution:

A=2L+2W\\A=2(10)+2(5)\\A=20+10\\A=30

Hope this helps!

Stay Safe!

4 0
3 years ago
O pompa de benzina dispune de o rezerva care ii ajunge 24 de zile,daca vinde zilnic 1000litri . Cat timp ii ajunge rezerva daca
olga55 [171]
1000x24=24000 litri
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5 0
3 years ago
How many albums can Jada download if she downloads 30 individual songs?
Juli2301 [7.4K]

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5

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8 0
2 years ago
A manufacturer produces piston rings for an automobile engine. It is known that ring diameter is normally distributed with σ=0.0
oksian1 [2.3K]
<h2>Answer with explanation:</h2>

The confidence interval for population mean is given by :-

\overline{x}\pm z^* SE                   (1)

, where \overline{x} = sample mean

z* = critical value.

SE = standard error

and SE=\dfrac{\sigma}{\sqrt{n}} , \sigma = population standard deviation.

n= sample size.

As per given , we have

\overline{x}=74.021

\sigma=0.001

n= 15

It is known that ring diameter is normally distributed.

SE=\dfrac{0.001}{\sqrt{15}}=0.000258198889747\approx0.000258199

By z-table ,

The critical value for 95% confidence  = z*= 1.96

A 99% two-sided confidence interval on the true mean piston diameter :

74.021\pm (2.576) (0.000258199)     (using (1))

74.021\pm 0.000665120624

74.021\pm 0.000665120624\\\\=(74.021- 0.000665120624,\ 74.021+ 0.000665120624)\\\\=(74.0203348794,\ 74.0216651206)\approx(74.020,\ 74.022)  [Rounded to three decimal places]

∴  A 99% two-sided confidence interval on the true mean piston diameter  = (74.020, 74.022)

By z-table ,

The critical value for 95% confidence  = z*= 1.96

A 95% lower confidence bound on the true mean piston diameter:

74.021- (1.96) (0.000258199)    (using (1))

74.021- 0.00050607004=74.02049393\approx74.020 [Rounded to three decimal places]

∴  A 95% lower confidence bound on the true mean piston diameter= 74.020

7 0
3 years ago
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