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3 years ago

A rectangular prism has dimensions of 3x, 5x, and 6x. Write an expression for the total volume of the prism.

Mathematics

2 answers:

Ksju [112]3 years ago

7 0

Answer:

Correct answer is 90x^3

Step-by-step explanation:

Multiply (3x)(5x)(6x)

The answer you will get wil be 90x^3

Evgesh-ka [11]3 years ago

3 0

90because u multiple 3x in 5x equal to 15 then multiple 6x in 15x together equal to 90 prism

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When truckers are on long-haul drives, their driving logs must reflect their average speed. Average speed is the total distance

bekas [8.4K]

a) $v=\frac{d_{tot}}{t_{tot}}=\frac{(3 h)(60 mph)+20 mi}{3 h +t_2}$

The average speed is equal to the ratio between the total distance ( $d_{tot}$ and the total time taken ( $t_{tot}$ ):

$v=\frac{d_{tot}}{t_{tot}}$

the distance travelled by the trucker in the first 3 hour can be written as the time multiplied by the velocity:

$d_1 = (3 h)(60 mph)=180 mi$

So the total distance is

$d_{tot}=d_1 +d_2 = 180 mi+20 mi=200 mi$

The total time is equal to the first 3 hours + the time taken to cover the following 20 miles in the city:

$t_{tot}=3 h +t_2$

So, the equation can be rewritten as:

$v=\frac{d_{tot}}{t_{tot}}=\frac{(3 h)(60 mph)+20 mi}{3 h +t_2}$

b) 0.50 h (half a hour)

Since we know the value of the average speed, $v=57.14 mph$ , we can substitute it into the previous equation to find the value of $t_2$ , the time the trucker drove in the city:

$v=\frac{200 mi}{3h +t_2}\\3h+t_2 = \frac{200 mi}{v}\\t_2 = \frac{200 mi}{v}-3h=\frac{200 mi}{57.14 mph}-3 h=0.50 h$

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3 years ago

I- i just need help at this point...

chubhunter [2.5K]

Answer:

(2.8-3.5)/3.5=-.2 (100)=20%

Percent error is 20%

formula to fin percent error is ((approx-exact)/exact)(100)

Step-by-step explanation:

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3 years ago

Kelly had 474 in her checking account in june.She earns $138 in july and puts all of it in her account.How much money does kelly

Inga [223]

Answer:

612

Step-by-step explanation:

Since Kelly had already 474 dollars in her checking account and added 138 more, 474+138=612

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3 years ago

Read 2 more answers

(6)(−3)(−5) ........................

My name is Ann [436]

Answer:

-2? maybe

Step-by-step explanation:

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3 years ago

Can someone help with this

melisa1 [442]

Answer: -1

Step-by-step explanation:

Find the Slope

(0, 2) , (1, 1)

Slope is equal to the change in y over the change in x, or rise over run.

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m = _________

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The change in x is equal to the difference in x-coordinates (also called run), and the change in y

is equal to the difference in y-coordinates (also called r ise).

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m = _____

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3 years ago