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miv72 [106K]
3 years ago
14

Mr. Rifkin had 240 digital and manual cameras. After donating 82 digital cameras and 26 manual cameras, he had 3 times as many d

igital cameras as manual cameras left. How many digital cameras did he have first?
Mathematics
1 answer:
Oliga [24]3 years ago
4 0
<span>He started with 184 digital cameras and 56 manual cameras

Work--> </span>d + m = 240   equation 1 (d-82) = 3(m-26)  equation 2d - 82 = 3m - 78d - 3m = 82 - 78d - 3m = 16         equation 2 simplified  d + m = 240d - 3m = 16         subtract equation 1 from equation 2---------------   -4m = -224      m = -224/-4      m = 56 d + m = 240d = 240-md = 240-56d = 184
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8 cm
Sergio039 [100]

Answer:

320 cm³

Step-by-step explanation:

none of the above

8 × 10 × 4

80 × 4

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6 0
3 years ago
Shania is planning a party at her home. She has made 126 chocolate truffles and 84 caramel truffles to give to her guests. If th
vodomira [7]
This turns out to be a division problem. To find how many each person can get, you must divide the amount of food by how many guests.
126 divided by 21 is 6
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5 0
3 years ago
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Find the exact value of each expression, if it defined. ( if answer is undefined, enter undefined) tan (-1)
Triss [41]

Answer:

tan(-1) \approx -0.02

Step-by-step explanation:

The given expression is

tan(-1)

The tangent of -1 is defined, it's around -0.02.

The tangent is a trigonometric function with a period of \pi, where each period is separated by a vertical asymptote which indicates that the function is not determined through all its domain, that's what the question refers to when it says "if is undefined, enter undefined".

However, at x=-1, the tangent is determined, that means, there's no asymptote on that coordinate, that's why it has a "determined value", which is -0.02 approximately.

tan(-1) \approx -0.02

6 0
3 years ago
Express as a fraction in the simplest form: 43.5%
frez [133]

Answer:

C

Step-by-step explanation:

43.5 x 10 = 435

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7 0
2 years ago
Alexandra and Austin applied to the same university. They looked up the average SAT score of students admitted to that universit
Deffense [45]

Answer:

x= (y+40)-(y-330)

Step-by-step explanation:

According to the information provided, the difference in their scores would be the result of subtracting Austin's SAT score from Alexandra's SAT score.

Then, as Alexandra's SAT score was 40 points above the average score this means that you have to add 40 to the average score to get her result. Also, as Austin's SAT score was 330 points below the average score, this means that you have to subtract 330 from the average score. With this you can write the expression:

x= difference in their scores

y= average score

x= (y+40)-(y-330)

7 0
3 years ago
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