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Alex_Xolod [135]

3 years ago

5

Alexandra worked 5 hours on Monday, 4.5 hours on Tuesday, and 2.5 hours on Wednesday which is closest to the mean number of hour

s she worked over the three day period

2 answers:

7nadin3 [17]3 years ago

7 0

I think the mean would be 4.5 hours but if this is a multiple choice question can you tell me what the options are

serg [7]3 years ago

3 0

I got the answer 4 .....

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Need answer fast with all the steps included please

wel

Answer:

6n²√3

Step-by-step explanation:

2√3n•√9n³

The above expression can be simplified as follow:

Recall

√9 = 3

2√3n•√9n³ = 2√3n × 3√n³

Recall

m√a × n√b = mn√(a × b)

Thus,

2√3n × 3√n³ = (2×3) √(3n × n³)

2√3n × 3√n³ = 6√3n⁴

Recall:

√aᵇ = (aᵇ)¹/² = aᵇ/²

√n⁴ = n⁴/²

√n⁴ = n²

Thus,

6√3n⁴ = 6n²√3

Therefore,

2√3n•√9n³ = 6n²√3

4 0

3 years ago

What is the difference when the sum of 12 and (-6) is subtracted from the quotient of (-21) and 3?

Bumek [7]

12+(-6)-[(-21)/3]
=6-(-7)=6+7=13

6 0

3 years ago

An open box is to be constructed so that the length of the base is 3 times larger than the width of the base. If the cost to con

natta225 [31]

Answer:

Step-by-step explanation:

Let assume that the volume = 88 cubic feet

Then:

$L = 3w --- (1)volume = l \times w \times h \\ \\ 88 = (3w) \times w \times h \\ \\ 3w^2 h= 88 \\ \\ h = \dfrac{88}{3w^2}--- (2) \\ \\$

The construction cost now is:

$C = 4(l \times w) + 2 ( w \times h) + 2(l \times h) \\ \\ C = 4(3w^2) + 2(w \times \dfrac{88}{3w^2}) + 2(3w \times \dfrac{88}{3w^2}) \\\\ C = 12w^2 + \dfrac{176}{3w} + \dfrac{176}{w}$

Now, to determine the minimum cost:

$\dfrac{dC}{dw}= 0 \\ \\ \implies 24 w - \dfrac{176}{3w^2}- \dfrac{176}{w^2}=0 \\ \\ 24 w ^3 = \dfrac{176}{w^2}(\dfrac{1}{3}+1) \\ \\ 24 w ^3 = \dfrac{176(4)}{3} \\ \\ w^3 = \dfrac{88}{3(3)}$

$w = \dfrac{88}{3(3)}^{1/3} \ feet$

Now;

$length = 3 ( \dfrac{88}{3(3)})^{1/3} \ feet$

$height = ( 88})^{1/3} (3)^{1/3} \ feet$

6 0

3 years ago

8(4- x) = 7x + 2<br> x=<br> ?<br> DONE<br> DONE

nirvana33 [79]

Answer:

Plz see the answer behind it.

Step-by-step explanation:

Hope it helps uh

If you get confuse you can ask me .........

5 0

3 years ago

Which value of a would make the following expression completely factored?<br><br> x2 – a

tigry1 [53]

Answer:

a = 4.

Stepby-step explanation:

x^2 - 4 = (x + 2)(x - 2).

8 0

3 years ago