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alisha [4.7K]
3 years ago
15

Is it necessary to do all of the calculations to determine the sign of the product?

Mathematics
1 answer:
valkas [14]3 years ago
6 0

Depends on the formula, but with most cases yes, because you may have -3 as an answer, but adding only 4 makes it positive.

There are some cases where you could look at it and know the sign, like if I am adding -100 and -93, I know the answer will be negative

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A 7 kg ham costs $19/kg. Find the cost per pound.
stepan [7]

Answer: \$8.62/\text{Pound}

Step-by-step explanation:

Given

There is 7\ kg of ham available which costs

cost=\$\ 19/kg

i.e.

1\ kg\ \text{costs}\ \$19

and we know

1\ kg=2.204\ \text{pound}

So, 2.204\ \text{Pound costs}\ \$19

thus 1\ \text{Pound costs}\ \dfrac{19}{2.204}=\$8.62/\text{Pound}

4 0
3 years ago
What does how many mean in math?
Komok [63]
The question is asking to states the definition of the term "how many" in math, base on the question and in my further research, the term is use as a count in every variables and situations. I hope you re satisfied with my answer and feel free to ask for more 
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3 years ago
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The area of a triangle whose height is 1 more than 6 times its base is 13 square feet. If the base of the triangle is x feet, wh
brilliants [131]
The correct answer is choice C.  Here is the reason.  If you substitute the information into the formula this is what it would be:
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13 = x (6x + 1)/2
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4 0
3 years ago
Find the total surface area of a cylinder with a height of 8 cm and radius of 4 cm. Leave your answer in terms of π.
Sav [38]

Answer:

96π cm²

Step-by-step explanation:

Use the formula for the surface area of a cylinder:

A = 2πrh + 2πr²

Plug in the height and radius, and solve:

A = 2π(4)(8) + 2π(4)²

A = 2π(32) + 2π(16)

A = 64π + 32π

A = 96π

So, the surface area of the cylinder is 96π cm²

7 0
3 years ago
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Write down the first five prime numbers.<br><br>The answer is 2, 3, 5, 7, 11.​
sergij07 [2.7K]

Answer:

The answer is 2, 3, 5, 7, 11.​

Step-by-step explanation:

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