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3 years ago

A negative times a negative equals a positive true or false

Mathematics

2 answers:

tia_tia [17]3 years ago

8 0

Answer:

true

Step-by-step explanation:

kobusy [5.1K]3 years ago

5 0

True, when the signs are different the answer is a negative, but when the signs are the same the answer is a positive.

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Jane will draw one card from the regular deck of 52 cards. In how many ways can she choose a jack or a black card?

elena-s [515]

Answer:

Step-by-step explanation:

In a regular 52 card deck, 26 are black (clubs or spades). Additionally, there are two red jacks (diamonds and hearts). This equals 28/52. As a probability, it would be 28/52=14/26=7/13. This could also be expressed as a percentage or decimal. 0.538 or 53.8%. But the question asks how many ways can she choose a jack or black card, so I’m assuming they don’t want the probability, just the number, which is 28.

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3 years ago

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5c+12=11c+16-6c Solve

Stella [2.4K]

Answer:

No solution.

Step-by-step explanation:

Nothing can be further done

4 0

3 years ago

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Explain the distance formula. Than use it to calculate the distance between A(1, 1) and B(7, -7).

Alina [70]

The answer is 10 units.

8 0

3 years ago

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You purchase two bottles of and a hat. The hat costs $6.50. You pay 6% sales tax. You pay a total of $16.43. How much does one b

Advocard [28]

$4.50.

Total with tax = 1.06x = 16.43
X = 15.50 = total before tax

15.50 - 6.50 = 9 = amount spent on both bottles.

9/2 = 4.5 = amount spent on one bottle.

8 0

3 years ago

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Which one is cheaper and why

Shtirlitz [24]

Hey there! :)

Answer:

The bag is cheaper because one litre is roughly $1.00, compared to the carton which is $1.99 for one litre.

Step-by-step explanation:

Given:

Bag of 4 litre milk = $3.99

Carton of 1 litre milk = $1.99

Find the price per litre for a bag of milk:

$\frac{3.99}{4} = \frac{x}{1}$

Cross multiply:

3.99 = 4x

Divide both sides by 4:

3.99/4 = x.

x = 0.9975 ≈ $1.00

Bag of 1 litre milk ≈ $1.00

Carton of 1 litre milk = $1.99

$1.00 < $1.99

Therefore, the bag is cheaper.

5 0

3 years ago