Algebra 2
Unit 9 Summative Assessment
Lyme Disease

Lyme disease is one of the most common tick-transmitted diseases. Its tell-tale symptom is a bulls-eye shaped rash around the tick bite. Diagnosing Lyme disease in dogs is difficult because the bite area is covered by fur. A symptom of Lyme disease in dogs is lameness, but this is often mistaken for regular arthritis. At a veterinary hospital in Virginia, 120 lame dogs were tested for arthritis and Lyme disease. The results showed that 42 of the dogs had Lyme disease, and 96 had arthritis.

a. How many dogs had both Lyme disease and arthritis? Explain your reasoning. Fill in the Venn diagram with your results.

Dogs with Lyme disease Dogs with Arthritis

You want to complete a risk analysis for a dog chosen at random. Use the diagram to find each probability. Express each probability as a fraction and as a decimal.

b. P(Lyme disease) =
c. P(Arthritis) =
d. P(Lyme disease only) =
e. P(Arthritis only) =
f. P(Lyme disease or Arthritis) =
g. P(Lyme disease and Arthritis) =

answer

explanation

the area of a circle is calculated using the formula

or

we can use any of the above formulae to calculate the required. preferably, let us use the latter since the diameter is

we substitute the diameter into the formula to get:

this is the exact value for the area of the circle.

the correct answer is a

start with a line segment pq that we will copy. mark a point r that will be one endpoint of the new line segment. set the compasses' point on the point p of the line segment to be copied. adjust the compasses' width to the point q. the compasses' width is now equal to the length of the line segment pq.

step-by-step explanation:

15% chance.

step-by-step explanation:

3/10 times, the 5 year old will get a tablet. 5/10 times, the 13 yer old will get a tablet. multiply both fractions to get 15/100 times, both would have a tablet.

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.