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Gnom [1K]
3 years ago
10

How do I use 2.81 + 3.72 in benchmark to estimate this problem showing all work

Mathematics
1 answer:
Lorico [155]3 years ago
6 0
   2.81
+3.72
______
6.53

BENCHMARKED=6.5
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A package of 5 insulation socks cost $31.95. What is the unit price of the pairs of socks
Fantom [35]

Answer: $6.39

Step-by-step explanation: 31.95 divided by 5

3 0
4 years ago
The price of an airline ticket from St. Louis to Washington D.C. costs $250. A bus ticket costs $100. Traveling by plane takes 2
Aleksandr-060686 [28]

Answer:

He would gain by choosing air travel if, and only if, he values his time at more than $5 per hour.

Step-by-step explanation:

The problem states that:

A bus ticket from Washington to St. Louis costs $100, while it takes 32 hours to arrive.

A plane ticket from Washington to St. Louis costs $250, while it takes 2 hours to arrive.

Other things constant, Andrew would gain by choosing air travel if, and only if, he values his time at more than

If Andrew choses to go by plane, he saves 32-2 = 30 hours at the expense of $250-$100 = $150.

So, dividing the extra cost by the number of hours saved:

\frac{150}{30} = 5

He would gain by choosing air travel if, and only if, he values his time at more than $5 per hour.

7 0
4 years ago
a group of 266 people is called to jury duty in court. Each jury includes 12 jurors plus to alternates. How many complete juries
nekit [7.7K]
There are 14 positions. There are 266 choices for the first juror, 265 for the second, 264 for the third, etc. 266*265*264*...*252=<span>5.93893009829e+33, or about 6,000,000,000,000,000,000,000,000,000,000,000 complete juries. Hope this helps!</span>
7 0
3 years ago
Which expression is equivalent to b * b * b * b *
Ne4ueva [31]

Answer:

b⁴

Explanation:

b×b=b²     b×b=b²

b²×b=b³    b×b×b=b³

b³×b=b⁴    b×b×b×b=b⁴

4 0
3 years ago
Show all work to factor x4 − 10x2 + 9 completely.
leva [86]

Answer:

(x+1)(x-1)(x+3)(x-3)

Step-by-step explanation:

x4-10x^2+9

Group expression so that the coefficients of the x^2 terms add up to +9.

= x^4 -9x^2   - x^2+9

match coefficients in both groups

= x^4 -9x^2   - (x^2-9)

factor each group

= x^2 (x^2-9) - 1(x^2-9)

now factor out the common factor (x^2-9)

= (x^2-1)(x^2-9)

Finally, factor each quadratic factor

= (x+1)(x-1)(x+3)(x-3)

6 0
3 years ago
Read 2 more answers
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