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lina2011 [118]
3 years ago
13

Cine ma poate ajuta?

Mathematics
1 answer:
stira [4]3 years ago
5 0

Answer:

u think its A if not sorry

Step-by-step explanation:

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Rules for subtracting integers with the same sign
klio [65]

Answer:

To subtract integers, change the sign on the integer that is to be subtracted. If both signs are positive, the answer will be positive. If both signs are negative, the answer will be negative.

4 0
4 years ago
Mr. Javier purchased a number of pencils for ₱180 and sold all except 6 at a profit of ₱2 per pencil. With the total amount rece
Luba_88 [7]

Answer:

36 pencils

Cost = 0.2

Step-by-step explanation:

Given

Cost Price = 180

Represent the number of items by x

This implies that the cost of each item is \frac{x}{180}

Selling\ Price = Cost + Profit

Selling\ Price = \frac{x}{180} + 2

Since all but 6 items were sold, the total selling price is:

Total = (x - 6)(\frac{x}{180} + 2)

This amount can be used to buy 30 more items.

So, we have:

(x - 6)(\frac{x}{180} + 2) = x + 30

Multiply both sides by 180

180 * (x - 6)(\frac{x}{180} + 2) =180(x + 30)

(x - 6)(x + 360) = 180x + 5400

Expand brackets

x\² + 360x - 6x - 2160 = 180x + 5400

x\² + 354x - 2160 = 180x + 5400

Equate to 0

x\² + 354x - 180x - 2160 - 5400 = 0

x\² + 174x - 7560 = 0

Expand

x\² + 210x - 36x - 7560 = 0

x(x + 210) - 36(x + 210) = 0

(x - 36)(x + 210) = 0

x - 36 = 0 or x + 210 = 0

x = 36 or x = -210

<em>Since, number of items can't be negative, we have to discard x = -210.</em>

Hence:

x = 36

<em>We can then conclude that, Mr. Javier purchased 36 pencils</em>

Recall that

Cost = \frac{x}{180}

Cost = \frac{36}{180}

Cost = 0.2

5 0
4 years ago
Which statement explains why 49 is a perfect square?
Sav [38]
It’s 49 is equal to 7 times 7
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4 years ago
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erastovalidia [21]

Answer:

sorry but that will go off so <em> need the area rl</em>

<em>tell it in the comments! </em>

7 0
3 years ago
Brody and four of his friends purchased tickets to a movie. The total was $32. How much did each person spend on their ticket? U
Butoxors [25]
X= $6.40 because 32/5=6.4
8 0
4 years ago
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