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Anvisha [2.4K]
2 years ago
12

7.) Plumbers earn $160 a day and plumbers' helpers earn $100 a day. Twenty

Mathematics
1 answer:
9966 [12]2 years ago
6 0

Answer:

Step-by-step explanation:

p and h are number of plumbers and helpers, respectively.

Twenty workers earn a total of $2600

p+h = 20

h = 20-p

160p + 100h = 2600

160p + 100(20-p) = 2600

60p = 600

p = 10

h = 20-p = 10

Ten plumbers and ten helpers.

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<h3>How are samples classified?</h3>

Samples may be classified as:

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For this problem, a group of schools is selected, and then the new program is applied to all students in these school, meaning that all elements in the cluster are surveyed, so cluster sampling is used.

More can be learned about classification of samples at brainly.com/question/25122507

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7 0
1 year ago
How many sides does a regular polygon have if each of its interior angles measures 165?
Dimas [21]
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Answer:

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