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Kryger [21]
3 years ago
7

draw and lable a circle that has diameter more than 5 inches,but less than 10 inches. estimate its circumference and them find i

ts circumference using a calculator. compare your results

Mathematics
1 answer:
dsp733 years ago
4 0
Using a graph tool
see the attached figure

Let
D----------> the diameters of the circle O
D=8 in
D=8 in is < 10 in  and D=8 in is > 5 in
the center of the circle is the point (0,0)
the circumference of the circle=pi*D-------> 8*pi in

the circumference value estimate is about 24 in
the circumference value using a calculator is ----> 8*pi----> 25.13 in

the difference in the exact value and the estimate value is
 25.13-24--> 1.13 in



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Copy and complete. PLEASE SOLVE IT FAST thanks
Setler79 [48]

Answer:

(a) Increased by 100%

(b) Increased by 50%

(c) Decreased by 33.33%

(d) Decreased by 50%

(e) Increased by 200%

(f) Decreased by 66.67%

Step-by-step explanation:

In this question, we can use the following <em>formula</em>:

\text{Percentage Change =} \dfrac{\text{New value - Old Value}}{\text{Old Value}} \times 100

Positive value of percentage change means increase and

Negative value of percentage change means decrease.

Solution a)

Old Value = 1

New Value = 2

\text{Percentage Change =} \dfrac{\text{2 - 1}}{\text{1}} \times 100\\\Rightarrow 100\%

Increase of 100%

Solution b)

Old Value = 2

New Value = 3

\text{Percentage Change =} \dfrac{\text{3 - 2}}{\text{2}} \times 100\\\Rightarrow 50\%

Increase of 50%.

Solution c)

Old Value = 3

New Value = 2

\text{Percentage Change =} \dfrac{\text{2 - 3}}{\text{3}} \times 100\\\Rightarrow -33.33\%

Decrease of 33.33%.

Solution d)

Old Value = 2

New Value = 1

\text{Percentage Change =} \dfrac{\text{1 - 2}}{\text{2}} \times 100\\\Rightarrow -50\%

Decrease of 50%.

Solution e)

Old Value = 1  

New Value = 3

\text{Percentage Change =} \dfrac{\text{3 - 1}}{\text{1}} \times 100\\\Rightarrow 200\%

Increase of 200%.

Solution f)

Old Value = 3

New Value = 1

\text{Percentage Change =} \dfrac{\text{1 - 3}}{\text{3}} \times 100\\\Rightarrow -66.67\%

Decrease of 66.67%.

So, the answer is:

(a) Increased by 100%

(b) Increased by 50%

(c) Decreased by 33.33%

(d) Decreased by 50%

(e) Increased by 200%

(f) Decreased by 66.67%

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4 years ago
Anybody play rainbow on xbox? just drop your gt below...
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Answer:

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Step-by-step explanation:

6 0
3 years ago
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Use a unit rate determine about how many minutes it will take to fill 100 gallons in the pool
Norma-Jean [14]
Let’s assume water pressure is pumping 8 gallons per minute.
This means to fill 100 gallons in the pool it will take 12.50 minutes.
Explanation - {(1/8)x100}
8 0
3 years ago
La densidad de un líquido es de 1.5 gr/cm3 su masa es de 7 libras Determina la cantidad de litros que ocupan dichos líquidos
egoroff_w [7]

Answer:

<em>La cantidad de litros que ocupa dicho líquido es:</em>

  • <u>2,12 Litros</u>

Step-by-step explanation:

<em>El volumen de un líquido puede obtenerse al tener tanto su densidad como su masa usando la siguiente fórmula:</em>

  • <em>Densidad = masa / volumen</em>

<em>Al despejar volumen se obtiene:</em>

  • <em>Volumen = masa / densidad </em>

<em>Por lo cual, si se reemplazara la fórmula quedaría:</em>

  • <em>Volumen = 7 Lb / 1.5 gr/cm^3</em>

<em>Sin embargo, </em><u><em>para operar, las unidades en las que se expresa la masa deben coincidir con las unidades de la densidad</em></u><em>, por lo cual vamos a convertir las libras en gramos teniendo en cuenta el siguiente factor de conversión:</em>

<em>1 libra = 453,592 gramos</em>

<em>Entonces:</em>

<em>7 lb =  453,592 gr * 7 = 3175,144 gr</em>

<em>Ahora este valor reemplaza la masa en la fórmula y calculamos:</em>

  • <em>Volumen del líquido =  3175,144 gr / 1.5 gr/cm^3</em>
  • <u><em>Volumen del líquido = 2116,762667 cm^3</em></u><em> (He utilizado todos los decimales para obtener el resultado exacto).</em>

<em>A simple vista ya se tiene el volumen del líquido en cuestión, sin embargo, el ejercicio pide que sea expresado en litros, por lo cual vamos a convertir los centímetros cúbicos en litros teniendo en cuenta el siguiente factor de conversión:</em>

<em>1 litro = 1000 centímetros cúbicos.</em>

<em>Ahora podemos aplicar una regla de tres simple, si:</em>

  • <em>1000 cm^3 = 1 L</em>
  • <em>2116,762667 cm^3 = x</em>

<em>Y operamos:</em>

  • <em>x = (2116,762667 cm^3 * 1 L) / 1000 cm^3</em>
  • <u><em>x = 2,116762667 L</em></u>

<em>O si quieres un valor aproximado:</em>

  • <u><em>x = 2,12 Litros.</em></u>

<em>Entonces, la cantidad de litros teniendo en cuenta la densidad y la masa brindadas es </em><u><em>2,12 litros</em></u><em>.</em>

8 0
3 years ago
<img src="https://tex.z-dn.net/?f=f%28x%29%20%3D%202%5E%7Bx%20%2B%201%7D%20%20-%202%5E%7Bx%20-%201%7D%20" id="TexFormula1" title
Tanzania [10]

Note the derivative rule

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\\ \rm\Rrightarrow 2^x(x+1-x/4-1/4)

4 0
2 years ago
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