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4 years ago

1

Mathematics

1 answer:

serg [7]4 years ago

4 0

Answer:

35 by 40

Step-by-step explanation:

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Calculate the circumference of the following circles. Give your answers to 1 decimal place.

prisoha [69]

Answer:

a) 31.4 cm b) 22.0 cm c) 9.4 mm d) 18.8 m e) 1.6 m f) 28.3 cm g) 78.5 cm h) 9.7 m

Step-by-step explanation:

All it really is multiply the diameter which is the straight line through the center of the circle

C = d × \pi

8 0

3 years ago

Read 2 more answers

which geometric series represents 0.4444... as a fraction? a) 1/4, 1/40, 1/400, 1/4,000 b) 1/40, 1/400, 1/4,000, 1/40,000 c) 4/1

xenn [34]

Answer: $\frac{4}{10}+\frac{4}{100}+\frac{4}{1,000}+\frac{4}{10,000}$

Step-by-step explanation:

The given geometric series are:

a) $\frac{1}{4}+\frac{1}{40}+\frac{1}{400}+\frac{1}{4,000}$

on simplifying in decimals, we get

$0.25+0.025+0.0025+0.00025=0.27775\neq0.4444$

b) $\frac{1}{40}+\frac{1}{400}+\frac{1}{4,000}+\frac{1}{40,000}$

on simplifying in decimals, we get

$0.025+0.0025+0.00025+0.000025=0.027775\neq0.4444$

c) $\frac{4}{10}+\frac{4}{100}+\frac{4}{1,000}+\frac{4}{10,000}$

on simplifying in decimals, we get

$0.4+0.04+0.004+0.0004=0.4444$

Thus, this geometric series represent 0.4444.

d) $\frac{1}{10}+\frac{1}{100}+\frac{1}{1,000}+\frac{1}{10,000}$

on simplifying in decimals, we get

$0.1+0.01+0.001+0.0001=0.1111\ \neq0.4444$

7 0

4 years ago

Read 2 more answers

Please help me find the value of x

Drupady [299]

Answer:

x=10

Step-by-step explanation:

The whole figure is symmetric hence x=10

6 0

3 years ago

I need help it and exam and who ever helps me I’ll mark as brainliest.

pishuonlain [190]

Answer:

a) SA = 331.2 mi²

V = 374.4 mi³

Step-by-step explanation:

SA = 2 base areas + 6 vertical side areas

SA = (6 x 0.5 x 5.2 x 6 x 2) + (4 x 6 x 6) = 331.2 mi²

V = base area x height

V = (6 x 0.5 x 5.2 x 6) x 4 = 374.4 mi³

7 0

3 years ago

5 into 3 by 8 + 3 into 2 by 5

Artemon [7]

Answer:

5 X 3 ÷ 8 + 3 X 2/5

= 15/11 X 2/5

(Take LCM of 5 and 11. LCM - 55)

15 X 5. 75

_____ =. ___

11 X 5. 55

2 X 11. 22

_____ =. ___

5 X 11 55

75 X 25. 1650

______ = ______

55. 55

= 30

7 0

3 years ago