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Mashcka [7]
3 years ago
7

A truck can be rented from Company A for $110 a day plus $0.60 per mile. Company B charges $20 a day plus $0.90 per mile to rent

the same truck. Find the number of miles in a day at which the rental costs for Company and Company B are the same
Mathematics
1 answer:
Aloiza [94]3 years ago
6 0

Answer:

At 300 miles

Step-by-step explanation:

a        170      230    290

b         110       200    290

Mile    100      200    300

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the boundary of a rectangular farm field in ireland has a straight rock wall along one side and fences along its other three sid
Inessa [10]

Answer:

781250 ft^{2}

Step-by-step explanation:

Let y is the length of the farm field

Let x is the width of the farm field

Given that, no fencing is necessary along the rock wall, so we can find the perimeter of the farm is:

2x + y = 2500 feet

<=> y = 2500 -2x

The are of the farm has the following formula:

A = x*y

<=> A = x(2500 - 2x)

<=> A = 2500x -2x^{2}

To have  the maximum area of field in square feet, we need to use differentials to estimate:

\frac{dA}{dx} = 2500 - 4x

Set \frac{dA}{dx} = 0, we have:

2500 - 4x  = 0

<=> x = 625 feet.

=> y = 2500 - 2*625 = 1250 feet

So the maximum area of field is:

A = x*y = 625*1250 = 781250 ft^{2}

7 0
3 years ago
Please help 10 minutes left
Maksim231197 [3]

Answer:

I belive the answer is D

Step-by-step explanation:

6 0
3 years ago
A sign on the pumps at a gas station encourages customers to have their oil checked, and claims that one out of 10 cars needs to
Archy [21]

Answer:

0.2916, 0.1488, 0.0319

Step-by-step explanation:

Given that a sign on the pumps at a gas station encourages customers to have their oil checked, and claims that one out of 10 cars needs to have oil added.

Since each trial is independent there is a constant probability for any random car to need oil is 0.10

Let X be the number of cars that need oil

A) Here X is BIN(4,0.1)

P(X=1) = 4C1(0.1)(0.9)^3 \\= 0.2916

B) Here X is Bin (8, 0.1)

P(x=2) = 8C2 (0.1)^2 (0.9)^6\\\\=0.1488

C) Here X is Bin (20,5)

P(x=5) = 20C5 (0.1)^5 (0.9)^{15} \\=0.0319

3 0
3 years ago
Whats the answer?!?!?
Alisiya [41]

Answer:

3 + 5 + 7

Step-by-step explanation:

In addition it does not matter what order the numbers are in.

3 0
3 years ago
Nicholas started a canned-food drive at school. The equation representing this is y = 235x + 15, where x is the number of days,
Olenka [21]

Answer:

well, 11 days

Step-by-step explanation:

if you were to put take out the y and put 2600 in the y place (2600=235x+15)

you solve that, and will come to 11 days

further explaining:

2600-15 = 2585

2585 / 235 = 11

( I'm not sure if this is right, the question is worded weird and almost doesn't make sense)

but I think it is looking for substitution

Hope this helps!

8 0
3 years ago
Read 2 more answers
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