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3 years ago

Mark just got his commercial driver's license and is starting a new career as a truck driver.

Mathematics

1 answer:

Virty [35]3 years ago

3 0

Answer to break even, cost = earnings= $455, number of miles to cover is 11

Step-by-step explanation: cost =422+3x, where x= number of miles covered

Earnings=400+5x

St break even, cost = earnings, then solving the linear equation, by collecting like terms, and dividing through by 22. x=11, the Pu x=11 in the either the cost or earnings expressing to get 455

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s344n2d4d5 [400]

1st = -5*2^(1-1) = -5*2^0 = -5*1 = -5
4th = -5 *2^(4-1) = -5*2^3 = -5 *8 = -40
8th = -5*2^(8-1) = -5 *2^7 = -5 *128 = -640

Answer is 1st choice

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3 years ago

Please answer the question in the picture

rosijanka [135]

answer:

(5x-1)(x-3)

explanation:

→ 5x² - 16x +3

→ 5x² -15x - x +3

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2 years ago

Mary bought an antique clock in its first year its value increased by 30% in the second year its value increased by 30% work out

Papessa [141]

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3 years ago

If vx=11u and vz=u+30 find the value of u that makes the Quadrilateral WXYZ a parallelogram

stiv31 [10]

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2 years ago

A 50 foot rope weighing a total of 32 lbs extended over a cliff that is 35 feet to the ground. A large 8 pound bucket with 19 ga

larisa86 [58]

Answer:

A function that gives the work required in foot-lbs to lift the bucket up x feet from the ground is $W=16(50-x)+(19-\frac{x}{5})(8.3)x$ and the work to get the bucket to the top of the cliff is 3726 foot-lbs

Step-by-step explanation:

Work done to lift the rope by distance x feet:

$W_1=32(\frac{50-x}{2})$

Work done to lift the bucket by distance x feet:

$W_2=(19-\frac{x}{5})(8.3)x$

On reaching top 7 gallons of water spilled out so , on going up by x feet $\frac{7x}{35}=\frac{x}{5}$ gallons of water spilled out.

a function that gives the work required in foot-lbs to lift the bucket up x feet from the ground:

$W=16(50-x)+(19-\frac{x}{5})(8.3)x$

Now the work to get the bucket to the top of the cliff i.e. x =35

$W=16(50-35)+(19-\frac{35}{5})(8.3)(35)$

W=3726

Hence, a function that gives the work required in foot-lbs to lift the bucket up x feet from the ground is $W=16(50-x)+(19-\frac{x}{5})(8.3)x$ and the work to get the bucket to the top of the cliff is 3726 foot-lbs

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3 years ago