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3 years ago

Please help fast I’d really appreciate it

Mathematics

1 answer:

Scorpion4ik [409]3 years ago

7 0

Step-by-step explanation:

a) You need a high degree of precision and accuracy to machine the gears because of what the device is meant to do: time-keeping.

b) You only need a fair degree of accuracy here for matching purposes.

c) Since you're measuring with a tape measure, you only need a fair amount of accuracy.

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Alicia took a friend for a birthday dinner. The total bill for dinner was $40.86 (including tax and a tip). If Alicia paid a 20.

solniwko [45]

Answer:

$33.85

Step-by-step explanation:

Let X be the initial bill:

(100 + 20.7)% of X was paid

120.7/100 × X = 40.86

X = 40.86 × 100/120.7

X = 33.85252693

4 0

3 years ago

Consider 8x2 - 48x = -104. Write the equation so that a = 1: x^2 + __x =__

Ymorist [56]

Answer:

x² -6x = -13

Step-by-step explanation:

Divide the equation by 8, the current value of "a".

... (8x² -48x)/8 = -104/8

... x² -6x = -13

8 0

3 years ago

Read 2 more answers

If twice a number, n, is 5 less than the number squared, which of the following equations could be used to properly solve for n?

hjlf

Answer:

2n - 5 = n^2 (or n squared)

3 0

3 years ago

I HAVE NAOTHER 705,024,000,000 TO SCIENTIFIC NOTATION BRAINLIEST AND 20PTS

Mashutka [201]

Alright here goes, it’s 7.05024•10^11

Explination:

Maths…

Hope this helps!

8 0

1 year ago

Read 2 more answers

A simple random sample of size n equals 200 individuals who are currently employed is asked if they work at home at least once p

____ [38]

Answer: 99% of confidence interval for the population proportion of employed individuals who work at home at-least once per week

//0.20113,0.20887[/tex]

Step-by-step explanation:

step 1:-

Given sample size n=200

of the 200 employed individuals surveyed 41 responded that they did work at home at least once per week

Population proportion of employed individuals who work at home at least once per week P = $\frac{x}{n} =\frac{41}{200} =0.205$

Q=1-P= 1-0.205 = 0.705

step 2:-

Now $\sqrt{\frac{P Q}{n} } =\sqrt{\frac{(0.205)(0.705)}{200} }$

=0.0015

step 3:-

Confidence intervals

using formula

$(P - Z_∝} \sqrt{\frac{P Q}{n},} (P + Z_∝} \sqrt{\frac{P Q}{n},$

$(0.205-2.58(0.0015),0.205+2.58(0.0015)\\0.20113,0.20887$

=0.20113,0.20887[/tex]

conclusion:-

99% of confidence interval for the population proportion of employed individuals who work at home at-least once per week

//0.20113,0.20887[/tex]

4 0

3 years ago