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Readme [11.4K]
2 years ago
15

10. Allen has $3.30 in dimes and quarters. If he has 24 coins in all, find the number of dimes and quarters

Mathematics
1 answer:
agasfer [191]2 years ago
3 0

Answer:

6 Quarters and 18 Dimes

Step-by-step explanation:

18 x 0.10 = $1.8

6 x 0.25 = $1.5

$1.5 + $1.8 = $3.30

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Select all the rates that are unit rates.
tensa zangetsu [6.8K]
Pretty sure it’s 2 and 4. A unit rate is usually something to one 1. So 1 would be in the denominator.
5 0
3 years ago
At a certain vineyard it is found that each grape vine produces about 10 lb of grapes in a season when about 700 vines are plant
Delicious77 [7]

Answer:

Number of vines that should be planted are 150.

Step-by-step explanation:

The number of pounds of pounds of grapes produced per acre is represented by the expression A_{n}=(700+n)(10-0.01n)

Where n = additional vines planted

To maximize the production of grapes we will find the derivative of A(n) and equate it to zero.

A_{n}=(7000+3n-0.01n^{2} )

A'_{n}=(3-0.02n)

For A'_{n}=0

3 - 0.02n = 0

0.02n = 3

n = \frac{3}{0.02}

n = 150

To check whether the maximum value of the function is at n = 150, we will find the second derivative A(n).

A''_{n}=-0.02

Which shows A"(n) < 0

Therefore, A(n) has the maximum value at n = 150.

Therefore, number of vines that should be planted are 150.

5 0
4 years ago
Frannie bought a pair of sandals. What is a reasonable measurement for the width of a pair of sandals? A 5 cm B 5 mm C 5 in. D 5
jonny [76]

Answer:

A 5cm

Step-by-step explanation:

The others answers would be either too big or too small to fit

7 0
3 years ago
Please help this is timed! I’ll give brainliest.
aleksandrvk [35]

Answer:

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Using wildcard metacharacters, how can one indicate a number is either 1, 2, 3, or 4?
schepotkina [342]
Using the current "regular expressions" in use in Java, Perl, and many other applications, this belongs to "character class" using the [ ] notation.
For characters "either" 1,2,3,4, we write
[1234]
or in this particular case,
[1-4]
8 0
3 years ago
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