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natulia [17]
3 years ago
14

a studio charges a sitting fee of $25 plus $7 for each portrait she ordered write a expression that can be used to find the tota

l cost to have photographs taken then find the cost of purchasing 12 purchase sheets
Mathematics
1 answer:
Kay [80]3 years ago
5 0
$7p+$25
$7(12)+$25=$84+$25= $109 total cost
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95. A 20-gallon alcohol-water solution contains 15% pure alcohol. How much alcohol should
navik [9.2K]

Answer:

  1.25 gallons of alcohol

Step-by-step explanation:

Let x represent the amount of alcohol to add to the mix. Then the total amount of alcohol in the mix is ...

  0.15×20 + x = 0.20×(20 +x)

  3 +x = 4 + 0.2x . . . . simplify

  0.8x = 1 . . . . . . . . . . add -3-0.2x

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1.25 gallons of alcohol should be added to make 21.25 gallons of 20% alcohol.

4 0
3 years ago
HELP ME WITH MATH!!! So basically I have to figure out how many hours that is between the times.
Ad libitum [116K]

Answer: (I think its correct)

1: 8 hours and 30 minutes

2: 8 hours

3: 8 hours and 50 minutes

4: 8 hours and 45 minutes

5: 7 hours and 48 minutes

6: 11 hours 13 minutes

7: 11 hours 31 minute

Step-by-step explanation: (Im bad at explaining it)

So I got this by using counting the hours in between the times and taking out the minutes in them,then subtracting the time they took the fall asleep. Every time that has minutes I add that, if it is over 60 minutes I subtract 60 minutes. So like 30+35=65 | 65-60=5.

Lets do a problem: 9:15 (bed) | 10:30(woke up) | 30 minutes (fall asleep)

So we count how many hours in each time and we take out the minutes, so 9:00, 10:00, 11:00, so on and so forth.

So in between the hours its was 13. Then we add the minutes (15+30)

15+30=45. So the answer is 13 hours and 45 minutes, but we got to subtract 13 hours and 45 minutes which is 13 hours and 15 minutes.

Final Answer: 13 hours and 15 minutes.

8 0
2 years ago
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dsp73

Answer:

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Step-by-step explanation:

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5 0
2 years ago
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Stells [14]

Step-by-step explanation:

Let's check

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Circumference:-

➜2πr

➜<u>2πx</u>

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New Circumference:-

➜2πr

➜2π3x

➜6πx

<u>Takin</u><u>g</u><u> </u><u>ratio</u><u>:</u><u>-</u>

➜2πx/6πx

➜1/3

➜1:3

<h3>Thus,</h3>

If we quadruple the radius Circumference will also be quadrupled.

7 0
2 years ago
4+4+4+4what is 4 + 4 + 4 + 4 ​
vredina [299]

Answer 16

Step-by-step explanation:

4+4=8+4=12+4=16

OR

4×4=16

8 0
3 years ago
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