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3 years ago

Work out 25% of 20 metres

Mathematics

2 answers:

Bumek [7]3 years ago

6 0

25% of 20 meters
25%=1/4 so 1/4 of 20 is 5 meters

balandron [24]3 years ago

5 0

Answer:

5 meters

Step-by-step explanation:

We have to calculate 25% of 20 meters

So we rewrite the equation

25% × 20

$\frac{25}{100}$ × 20

0.25 × 20

= 5 meters

25% of 20 meters is 5 meters

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If f(1) = 2 and f(n) = f(n − 1)2 + 3 then find the value of f(3).

blondinia [14]

Answer:

Step-by-step explanation:

f(n) is purely based on the previous value of f(n), or f(n-1), so we can start with f(1) and work our way up. We know f(1) = 2, so to find f(2), we plug f(1) into

f(n-1)²+3 to get

f(1)²+3 = 2²+3 = 4+3=7

Thus, f(2) =7. Similarly,

f(3) = f(3-1)²+3 = f(2)² + 3 -= 7² + 3= 52

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2 years ago

Which value in the set {16, 18, 51, 57} is a solution of the equation 3p = 54?

Step2247 [10]

Answer:

Step-by-step explanation:

54/3=18

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3 years ago

A circle has a radius of 5cm. find its area and circumference.

daser333 [38]

Answer:

A = 78.5

C = 31.4

Step-by-step explanation:

Circumference = 2πr

r = 5

C = 2(3.14)(5)

Circumference = 31.4

Area = $\pi r^2$

r = 5

A = $(3.14)(5^2)=(3.14)(25)=78.5$

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2 years ago

At a school, all 60 students play on at least one of three teams: basketball, soccer, and mathletics. 8 students play all three

svet-max [94.6K]

Only 26 play on exactly 2 teams

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3 years ago

What’s the combined average of Altuve’s weighted average below:

Fynjy0 [20]

Answer:

The combined average of Altuve's weighted averages is 1 for 2 or 1/2

Step-by-step explanation:

Combined Average

On Friday, Altuve had 3 out of 5 successes

On Saturday, Altuve had 2 out of 4 successes

On Friday, Altuve had 1 out of 3 successes

The total successes are 3+2+1=6

The total tries are 5+4+3=12

The combined average is:

$\displaystyle \bar x=\frac{6}{12}$

Simplifying:

$\displaystyle \bar x=\frac{1}{2}$

The combined average of Altuve's weighted averages is 1 for 2 or 1/2

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3 years ago