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3 years ago

Mariyah bought 5 yards of fabric and a spool of thread for $22.75. If the spool of thread cost

Mathematics

2 answers:

Tems11 [23]3 years ago

7 0

Answer:

$4.25

Step-by-step explanation:

Subtract the cost of the spool of thread from the total price:

22.75 - 1.50

= 21.25

Then, divide this by 5 to find the cost of fabric per yard:

= 4.25

So, the cost of the fabric per yard is $4.25

Gnom [1K]3 years ago

6 0

Answer:

Step-by-step

$22.75-$1.50 to get the 5 yards cost

=$21.25

21.25 / 5 yards to get per yard cost

=$4.25 / yard

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There were 16 sandwiches on a tray for a lunch meeting. After the meeting, 3 were left. How many sandwiches were eaten?

kifflom [539]

Answer:

Step-by-step explanation:

16-3+= 13

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3 years ago

The math club is selling gift wrap for a funraiser. They sold 45 rolls of soild wrapping paper at $4 each and rolls of patterned

Lunna [17]

4 * 45 = 180

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3 years ago

A certain test preparation course is designed to help students improve their scores on the LSAT exam. A mock exam is given at th

OlgaM077 [116]

Answer:

Interval [16.34 , 21.43]

Step-by-step explanation:

First step. Calculate the mean

$\bar X=\frac{(23+18+23+12+13+23)}{6}=18.666$

Second step. Calculate the standard deviation

$\sigma =\sqrt{\frac{(23-18.666)^2+(18-18.666)^2+(23-18.666)^2+(12-18.666)^2+(13-18.666)^2+(23-18.666)^2}{6}}$

$\sigma=\sqrt\frac{18.783+0.443+18.783+44.435+5.666+18.783}{6}$

$\sigma=\sqrt{17.815}=4.22$

As the number of data is less than 30, we must use the t-table to find the interval of confidence.

We have 6 observations, our level of confidence DF is then 6-1=5 and we want our area A to be 80% (0.08).

We must then choose t = 1.476 (see attachment)

Now, we use the formula that gives us the end points of the required interval

$\bar X \pm t\frac{\sigma}{\sqrt n}$

where n is the number of observations.

The extremes of the interval are then, rounded to the nearest hundreth, 16.34 and 21.43

6 0

3 years ago

A girl spent $39 and has 3/4 of the original amount left how much money did she originally have

Dvinal [7]

Ok so divide 39 by 4 which is 9.75 then mulitiply that by 3 to get your answer of $29.25

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3 years ago

Value of 8 in 1,283,479

Nutka1998 [239]

Answer:

80,000

Step-by-step explanation:

Since 8 is 4 spaces to the left, it’s in the 10,000’s range, making it 80,000

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3 years ago