HELP PLZ, 100 points!!!

Mathematics

2 answers:

Kazeer [188]3 years ago

6 0

<h2>Answer:</h2><h2>Hey mate here is your answer...</h2><h2>Step-by-step explanation:</h2><h2>New value =</h2><h2>5 + Percentage increase =</h2><h2>5 + (5% × 5) =</h2><h2>5 + 5% × 5 =</h2><h2>(1 + 5%) × 5 =</h2><h2>(100% + 5%) × 5 =</h2><h2>105% × 5 =</h2><h2>105 ÷ 100 × 5 =</h2><h2>105 × 5 ÷ 100 =</h2><h2>525 ÷ 100 =</h2><h2>5.25</h2>

hope it helps you ❣️

Marta_Voda [28]3 years ago

3 0

Answer:

10.25%

Step-by-step explanation:

Let the original number be represented with x.

Increase by 5% = 5% of x = 5/100 x X = 0.05x

So, the next number = x + 0.05x = 1.05x

Increase again by 5% = 5% of 1.05x = 5/100

x1.05x = 0.05 x 1.05x = 0.0525

So, the current number = 1.05x + 0.0525x =1.1025x

$\frac{1.1025x - x}{x} = 0.1025 \times 100 = 10.25\%$

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3 years ago

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Một ủy ban an toàn kiểm tra ngẫu nhiên 900 công nhân xây dựng trong thời gian làm việc, thấy có 48 công nhân không mang mũ bảo h

Usimov [2.4K]

Answer:

The percentage of workers not wearing the helmets is 5.3 %.

Step-by-step explanation:

A safety committee randomly examined 900 construction workers during their work, and found that 48 workers were not wearing helmets. Estimate the percentage of workers who do not wear protective masks during their working time with 98% confidence

total workers = 900

Not wearing helmet = 48

Percentage which are not wearing the helmets

= $\frac{48}{900}\times 100 = 5.3 %$ %