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N76 [4]
2 years ago
9

A running track has two semi-circular ends with radius 24m and two straights of length 85.9m as shown.

Mathematics
1 answer:
Semmy [17]2 years ago
6 0
Answer: 5931.8m^2

Explanation:

Explanation:

85.9 x 48 + 3.14 x 24^2
= 4123.2 + 1808.64
= 5931.8m^2

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Linda purchased a used vehicle that depreciates under a straight line method. The initial value of the car is $7000, and the sal
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Answer:

The value at the end of year 2 is $4400.

Step-by-step explanation:

The best approach here is to determine the expression for the line depreciation and then calculate the depreciation value at x = 2 years.

A line is given by

y = mx + b

where m is the slope and b the bias (aka y-intercept).  You can determine both directly from what is given. The slope is change in y divided by change in x. We know that over 5 years the car loses (500-7000)=-6500 in value. So, the slope is m=-6500/5 (note the negative sign). At time 0, the y-intercept is 7000, since that is the initial value (at year 0). So our line function is fully identified:

y = -\frac{6500}{5}x+7000

and gives you the value of the car in any given year. To answer the question, we now plug in 2 as value of x:

y=-\frac{6500}{5}\cdot 2 + 7000= 4400

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3 years ago
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The unit rate is also known as the constant of proportionality, but not as a proportion. 
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What’s an equation for<br> Five times a number
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Answer: 5 x ?

Step-by-step explanation:

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A pharmacist has an 18% alcohol solution and a 40% alcohol solution. How much of each should he mix together to make 10 liters o
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y = amount of the 40% solution

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mars1129 [50]

Answer:

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Step-by-step explanation:

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HOPE THIS HELPS!!!

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