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Chapter 1: Q. 1.19 (page 16)

a. A clinic had 25 patients on Friday morning. If 21patients were given flu shots, what percentage of the patients received flu shots? Express your answer to the one's place.

b. An alloy contains 56 g of pure silver and 22 g of pure copper. What is the percentage of silver in the alloy? Express your answer to the one's place.

c. A collection of coins contains 11nickels, 5quarters, and 7dimes. What is the percentage of dimes in the collection? Express your answer to the one's place.

Short Answer

Expert verified

a. The percentage of the patients received flu shots is 84%.

b. The percentage of silver in the alloy is 71.79%.

c. The percentage of dimes in the collection is30.43%.

Step by step solution

01

Part (a) step 1: Given Information

We need to find the percentage of the patients received flu shots.

02

Part (a) step 2: Simplify

Consider:

Number of patients the clinic had =25

Number of patients given flu shots=21

of patients given flu shots=??

Now,

of patients flu shots=21patients25patients脳100

=84precente.

03

Part (b) step 1: Given Information

We need to find the percentage of silver in the alloy.

04

Part (b) step 2: Simplify

Now,

percentage=mathtotalmath脳100percentageofsilver=5678脳100=71.79%

05

Part (c) step 1: Given Information

We need to find the percentage of dimes in the collection.

06

Part (c) step 2: Simplify

Here,

percentage=mathtotalmath脳100percentageofdimes=711+5+7脳100=30.43%

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Most popular questions from this chapter

Identify each activity, a to f, as an observation, a hypothesis, an experiment, or a conclusion. At a popular restaurant, where Chang is the head chef, the following occurred:

a. Chang determined that Customers rated the sesame sales of the house salad seed dressing as the best. had dropped.

b. Chang decided that the house salad needed a new dressing.

c. In a taste test, Chang prepared four bowls of lettuce, each with a new dressing: sesame seed, olive oil, balsamic vinegar, creamy Italian, and blue cheese.

d. Tasters rated the sesame seed salad dressing as the favorite.

e. After two weeks, Chang noted that the orders for the house salad with the new sesame seed dressing had doubled.

f. Chang decided that the sesame seed dressing improved the sales of the house salad because the sesame seed dressing enhanced the taste.

Classify each of the following statements as an observation or a hypothesis:1.2

a. Analysis of10ceramic dishes showed that four dishes contained lead levels that exceeded federal safety standards.
b. Marble statues undergo corrosion in acid rain.
c. A child with a high fever and a rash may have chickenpox.

a. What is measured on the horizontal axis?

b. What is the range of value on the horizontal axis?

c. What is the temperature of the tea after 20min?

d. How many minutes were needed to reach a temperature of 45掳C?

For each of the following, indicate if the answer has a positive or negative sign:1.4
a. Two negative numbers are added.
b. A positive and negative number are multiplied.

Solve each of the following for a:

a. 4a+4=40.

b.a6=7.
See all solutions

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