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goldenfox [79]
3 years ago
14

a sand timer has 5 5/16 ounces of sand. of sand falls at a rate of 2.5 ounces per minute, how many minutes will the timer last?

Mathematics
1 answer:
Hitman42 [59]3 years ago
5 0

Answer:

about 2 minutes

Step-by-step explanation:

first lets make everything in the same term

so 2.5 =2 1/2

then divide 5 5/16 by 2 1/2

or 85/16 divided by 5/2

you get 2 1/8

so you have about 2 minutes before the timer runs out

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members of a cookie club are selling cookie's for $2.50 per box. their goal is to sell enough boxes to total at least $350 in sa
bearhunter [10]

Answer:

They would need to sell more than or equal to 140 boxes of cookies.

Step-by-step explanation:

The equation would be

2.50t >= 350

--------   -------

2.50     2.50

t >= 140

5 0
2 years ago
PLEASE HELPPPPP!!!! (answer in decimal)
kakasveta [241]

Answer:

\approx 0.482659

Step-by-step explanation:

The experimental probability is the chance of an event happening based on data, or rather the experiment results, and not on a theoretical calculation. In essence, a theoretical calculation can be described by the following formula:

\frac{desired}{total}

However, the experimental probability can be described with the following formula:

\frac{number\ of\ desired\ outcomes}{number\ of \ trials}

The number of trials is the sum of the number of outcomes. In this case, the desired outcome is tails. Therefore, the experimental probability can be described using the following formula:

\frac{tails}{total}

One can also rewrite the formula as the following. This is because the total is the sum of the number of the two outcomes:

\frac{tails}{heads+tails}

Substitute,

\frac{167}{167+179}

Simplify,

\frac{167}{346}

Rewrite as a decimal:

\approx 0.482659

4 0
3 years ago
Tom and Bob start to walk towards each other at 18 feet per minute and 12 feet per minute respectively. In how many minutes will
kogti [31]

Answer:

19 minutes

Step-by-step explanation:

Tom and Bob start to walk towards each other at 18 feet per minute and 12 feet per minute respectively. Per one minute they together walk

18 + 12 = 30 feet.

Since the distance betwewen them is 570 feet, then it takes them

\dfrac{570}{30}=19\ \text{minutes}.

4 0
3 years ago
Solve for v.<br> .<br> Simplify your answer as much as possible.
goldenfox [79]

Answer:

v = 9

Step-by-step explanation:

Use the method of cross- multiplying

\frac{a}{b} = \frac{c}{d} ⇒ ad = bc

8v = 12 × 6

8v = 72 ( divide both sides by 8 )

v = 9


7 0
3 years ago
Read 2 more answers
-9x + (52x -3571) +357
nadya68 [22]
43x-3214 should be the answer
4 0
3 years ago
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