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2 years ago

Need help ASAP

Mathematics

1 answer:

SpyIntel [72]2 years ago

6 0

Answer:

Step-by-step explanation:

EARNINGS FOR YEARS = PAY RATE/HOUR * HOURS/WEEKS * WEEKS/YEAR * YEARS

EARNINGS FOR 15 YEARS = 21.75/hour * 40 hours/week * 52 weeks/year * 15 years

Earnings = $678,600

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The manager of a warehouse would like to know how many errors are made when a product's serial number is read by a bar-code read

Bond [772]

Answer:

$(a)\ \bar x =20.5$

$(b)\ \sigma = 14.54$

Step-by-step explanation:

Given

$x: 36, 14, 21, 39, 11, 2$

Solving (a): The mean of the 6 samples.

This is calculated as:

$\bar x = \frac{\sum x}{n}$

So, we have:

$\bar x =\frac{36+ 14+ 21+ 39+ 11+ 2}{6}$

$\bar x =\frac{123}{6}$

$\bar x =20.5$

Solving (b): The sample standard deviation.

This is calculated using:

$\sigma = \sqrt{\frac{\sum(x - \bar x)^2}{n-1}}$

So, we have:

$\sigma = \sqrt{\frac{(36 - 20.5)^2 + (14 - 20.5)^2 + (21 - 20.5)^2 + (39 - 20.5)^2 + (11 - 20.5)^2 + (2 - 20.5)^2}{6-1}}$

$\sigma = \sqrt{\frac{1057.5}{5}}$

$\sigma = \sqrt{211.5}$

$\sigma = 14.54$

7 0

3 years ago

your baseball team has won 6 games and lost 4 games. if the team does not lose any more games, how many games must the team win

puteri [66]

Answer:

The team must win 2 games to have a win : loss ratio o 2.

Step-by-step explanation:

Ratio win : loss, r:

r = total wins / total losses

Total wins, Tw:

Call n the number of new wins:

Tw =number of wins until so far + number of new win = 6 + n

Total losses, Tl:

Tl = number of losses so far + number of new losses = 4 + 0 = 4

Target ratio:

r = 2 ⇒ Tw / Tl = (6 + n) / 4 = 2

Solve for n:

(6 + n ) = 4 × 2
6 + n = 8
n = 8 - 6
n = 2

Hence, the team must win 6 more games.

Verification: (6 + 2 ) / 4 = 8 / 4 = 2, which is the target ratio.

8 0

3 years ago

Can anyone help me answer this?

netineya [11]

We need to know how much tax she must pay based on her taxable income ,
Since un the table it states that taxable incomes that range between $0-$132000have a tax rate of 18% of each $1 .
We already know her taxable income that is = 129000, which ranges between 0 and 132000.
Hence we know how much tax she must pay .
First , we need to calculate how much 18% of $1 is
= 18/100 x 1 = $0.18
Per annum/year = $0.18 x $129,000 = $23,220

Per month = $23,220 / 12 = $1,935

Hope you found this helpful , good luck !

7 0

2 years ago

Read 2 more answers

Mrs. Hanson has 2 pies for a party. She calculates that if she splits the pies evenly among the guests, they will each receive 1

brilliants [131]

There are 32 guests.
Proof: 1*8*2=32.

4 0

2 years ago

Read 2 more answers

If x / 5 = y, what is 2x?

tino4ka555 [31]

x / 5 = y

Multiply each side by 5 : x = 5y

Multiply each side by 2 : 2x = 10y

6 0

3 years ago