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3 years ago

You have 2 orange picks for every 5 green. If there are 21 picks in all how many picks are orange

Mathematics

2 answers:

Ronch [10]3 years ago

4 0

15 picks are oranges

Answer:

2 ORANGE = 5 GREEN

GREEN = 2/5 ORANGE = 0.4 ORANGE

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ORANGE + GREEN = 21

ORANGE + 0.4 ORANGE = 21

1.4 ORANGE = 21

ORANGE = 15

mina [271]3 years ago

3 0

6 picks are orange Because if you have 3 sets of green ( 15 picks) and 2 for each set (2x3 =6) you would have 6 of the 21 that are orange . 15 +6 =21

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All of the above can be used in order to prove a statement using coordinate methods.

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3 years ago

Create a list of steps, in order, that will solve the following equation. (x-5)^2=25(x−5) 2 =25left parenthesis, x, minus, 5, ri

Gekata [30.6K]

The value of x in the equation (x - 5)² = 25 is 10.

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2 years ago

In which quadrant do the points (-1,-2) and (-2,3) lie?

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2 years ago

The circumference of a sphere was measured to be 82 cm with a possible error of 0.5 cm.

Nat2105 [25]

Answer:

A) Maximum error = 170.32 cm³

B)Relative error = 0.0575

Step-by-step explanation:

A) Formula for circumference is: C = 2πr

Differentiating with respect to r, we have;

dC/dr = 2π

r is small, so we can write;

ΔC/Δr = 2π

So, Δr = ΔC/2π

We are told that ΔC = 0.5.

Thus; Δr = 0.5/2π = 0.25/π

Now, formula for Volume of a sphere is;

V(r) = (4/3)πr³

Differentiating with respect to r, we have;

dV/dr = 4πr²

Again, r is small, so we can write;

ΔS/Δr = 4πr²

ΔV = 4πr² × Δr

Rewriting, we have;

ΔV = ((2πr)²/π) × Δr

Since C = 2πr, we now have;

ΔV = (C²/π)Δr

ΔV will be maximum when Δr is maximum

Thus, ΔV = (C²/π) × 0.25/π

C = 82 cm

Thus;

ΔV = (82²/π) × 0.25/π

ΔV = 170.32 cm³

B) Formula for relative error = ΔV/V

Relative error = 170.32/((4/3)πr³)

Relative error = 170.32/((4/3)C³/8π³)

Relative errror = 170.32/((4/3)82³/8π³)

Relative error = 170.32/2963.744

Relative error = 0.0575

3 0

2 years ago