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Natali [406]
3 years ago
14

Please help surface area

Mathematics
1 answer:
mars1129 [50]3 years ago
3 0

Answer:

490

Step-by-step explanation:

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Use any method to work these out, but do NOT use a calculator.
Artemon [7]

Answer:

A) 216

B) 64.5

Step-by-step explanation:

         40

x     5.40

___________

You can solve it like that, I don't remember what it is called.

4 0
3 years ago
A technician is testing light bulbs to determine the number of defective bulbs. The technician records the table below to show t
Kruka [31]

Answer:

The ratio of the number of bulbs tested to defective bulbs is always 14 to 1.

<u><em>What is the unitary method?</em></u>

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.

We generally expect industrial processes to produce defects at about the same rate, the proportion of the defective product is generally considered to be a remain constant.

Here, the proportion of defective bulbs is:

1/14 = 2/28 = 6/84

So, it will be 24/336.

The ratio of the number of bulbs tested to defective bulbs is expected to remain constant at about 14.

Please vote for Brainliest and I hope this helps!

4 0
2 years ago
Find the circumference of the following circle. Use 3.14 for π. Round to the nearest hundredth
LuckyWell [14K]

Formula for the circumference of a circle:

C = 2πr     (C = circumference      π(pi) = 3.14.....    r = radius)

You know:

r = 9 cm      

π = 3.14       So substitute/plug it into the equation

C = 2πr

C = 2(3.14)(9)

C = 56.52 cm      

5 0
3 years ago
Read 2 more answers
What is X for? x+20=35-4x
Helen [10]
X+4x=35-20. 5x=35-20. 5x=15. X=3
4 0
3 years ago
Read 2 more answers
Please do 2-6.I’ll give someone Brainiest!!
bazaltina [42]

Answer:

r*4, m+15, 21/k, m-16, 17/g, p+24 .    tell me if this is wrong i may have another answer

Step-by-step explanation:

3 0
3 years ago
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