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zhannawk [14.2K]
3 years ago
6

Which choices are equivalent to the expression below? Check all that apply

Mathematics
1 answer:
Iteru [2.4K]3 years ago
4 0

Answer:

d

Step-by-step explanation:

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What is the surface area of a cube with a side of length 14 meters?
prisoha [69]
SA = 6a^2

Where 'a' is the side length.

Plug in what we know:

SA = 6(14)^2

Simplify the exponent:

SA = 6(196)

Multiply:

SA = 1176
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3 years ago
.Margaret is treating her best friend to a birthday dinner. Before ordering, Margaret wants to have an idea of the final bill. T
Nikitich [7]

Answer:

Your answer is 61.

Step-by-step explanation:

Simple enough! We simply round up each cost to the nearest whole dollar. $6.50 can be rounded to $7, $15.75 can be rounded up to $16, $2.25 can be rounded up to $3 (Note we're rounding up, in normal rounding we would round down to $2). Finally, $7.25 can be rounded up to $8.

Next comes simple algebra,

7+(16*2)+(3*2)+(8*2)=61

Therfore, your overestimate of the cost would be 61.

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2 years ago
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kotykmax [81]

Answer:

Give me a heart and 5 stars

Step-by-step explanation:

4 0
2 years ago
what positive number satisfies the condition that twice the number minus three times the reciprocal of the number is equal to 1?
marshall27 [118]
Solve:

"<span>twice the number minus three times the reciprocal of the number is equal to 1."
                                                     3(1)
Let the number be n.  Then 2n - ------- = 1
                                                       n

Mult all 3 terms by n to elim. the fractions:

2n^2 - 3 = n.  Rearranging this, we get 2n^2 - n - 3 = 0.

We need to find the roots (zeros or solutions) of this quadratic equation.

Here a=2, b= -1 and c= -3.  Let's find the discriminant b^2-4ac first:

disc. = (-1)^2 - 4(2)(-3) = 1 + 24 = 25.

That's good, because 25 is a perfect square.
                -(-1) plus or minus 5         1 plus or minus 5
Then x = ------------------------------ = --------------------------
                            2(2)                                  4

x could be 6/4 = 3/2, or -5/4.

You must check both answers in the original equation.  If the equation is true for one or the other or for both, then you have found one or more solutions.</span>
8 0
3 years ago
Here's a question for the day, it's simple but it needs explaining.
GuDViN [60]
It is used to see if a graph represents a function because if there is 2 dots or intersecting lines within the other lines then it is not a function. if there is only one line or dot, then yes, it is a function. hope i explained it well.
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