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3 years ago

1 flower has 10 petals how many petals do 5 flowers have?

Mathematics

2 answers:

Stella [2.4K]3 years ago

7 0

Answer:

Step-by-step explanation:

Evgesh-ka [11]3 years ago

4 0

Answer:

50 :)

Step-by-step explanation:

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Which graph represents a function with direct variation?

Elza [17]

Answer: **The anwser is b because it represents a function with a direct variation because of the negative 2**

Step-by-step explanation:

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3 years ago

A certain forest covers an area of 3900 km2 . suppose that each year this area decreases by 8% . what will the area be after 10

stiv31 [10]

A = P(1-r)^t

A = 3900(1-0.08)^10

A = 3900(0.92)^10 

A = 3900(0.434388454)

A = 1694.11

1694 square km

3 0

3 years ago

Alex17521 [72]

Answer:

Step-by-step explanation:

I think I am not sure I just started to do this in school...

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2 years ago

A mole of a chemical element contains approximately 6.02 × 1023 atoms. Match the following moles of elements with the approximat

makvit [3.9K]

Answer:

9.03x10^16---------1.5x10^-7 helium

2.709x10^24-------4.5 nitrogen

1.9264x10^28-------3.2x10^4 hydrogen

4.8782x10^14--------8.1x10^-10 xenon

Step-by-step explanation: i got it right PERIOD PURRRRR

3 0

2 years ago

Read 2 more answers

A scientist enlarged a circular portion of a microscope slide to make it easier to count the number of bacteria present in the s

Tema [17]

Answer:

Option B. $212.1\ cm^{2}$

Step-by-step explanation:

step 1

Find the central angle of the shaded sector

Remember that the diameter divide the circle into two equal parts ( 180 degrees each part)

Let

x -----> the measure of the central angle of the shaded sector

∠x+72°=180°

∠x=180°-72°=108°

step 2

Find the area of the circle

The area of the circle is

$A=\pi r^{2}$

we have

$r=15\ cm$

assume

$\pi=3.1416$

substitute

$A=(3.1416)(15)^{2}$

$A=706.86\ cm^{2}$

step 3

Find the area of the shaded sector

Remember that the area of the complete circle subtends a central angle of 360 degrees

by proportion find the area of a sector by a central angle of 108 degrees

$\frac{706.86}{360}=\frac{x}{108}\\ \\x=706.86*108/360\\ \\x=212.1\ cm^{2}$

8 0

3 years ago