3 years ago

An engineering student answered 58 questions correctly on a 100-question trigonometry test.

1 answer:

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If you are trying to find the percentage he received: 58/100

Total correct divided by total questions.

You get .58 or

58% by moving the decimal to spaces to the right.

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Estimate product using rounding 9.7 x 3.3=

Anestetic [448]

9.7*3.3=32.01
32 is the rounded product

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3 years ago

Helpp

Kamila [148]

We will use Pythagorean Theorem:
HC^2=20^2-12^2=400-144=256
HC= $\sqrt{256}$ =16
HD^2=16^2-14^2=256-196=60
HD= $\sqrt{60}$ =7.7459
Answer: HD=7.7 in.

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3 years ago

What is the population in 2020 of a place that has a population of 4 million people in 2011 and is growing at a rate of 1.3%?

Stolb23 [73]

Answer:

370 million

Step-by-step explanation:

In the 10 years from 2000 to 2010, the population was multiplied by the factor ...

100% + 9.6% = 109.6% = 1.096

In the next 20 years from 2010 to 2030, the population will be multiplied by that factor twice, if it grows at the same rate:

2030 population = (308 million)·(1.096²) ≈ 370 million

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