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3 years ago

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The instructions for building a kite tell you to begin by cutting a strip of wood to 45 cm in length, but your ruler only measur

es inches. How many inches should the piece of wood be? Round to the nearest quarter of an inch.
(Recall: 1 in. = 2.54 cm)

1 answer:

nata0808 [166]3 years ago

7 0

I got 17.72 for this one.

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In a circle, area and circumference can be found using the formulas A=(pi)r^2 and C=2(pi)r, respectively, Write a formula for A

AURORKA [14]

Answer:

$A = \dfrac{C^2}{4\pi}$

Step-by-step explanation:

Given that

Area of a circle $A=\pi r^2$

Circumference of the circle $C = 2 \pi r$

Let us re-write the equation of area of circle:

$A=\pi r^2$

$A = \pi \times r \times r$

Multiplying and dividing with 2:

$A = \dfrac{2\pi r}{2} \times r\\\text{Putting }2\pi r = C:\\\Rightarrow A = \dfrac{C}{2} \times r\\\text{Multiplying and dividing by } 2\pi:\\\Rightarrow A = \dfrac{C}{2} \times \dfrac{2\pi r}{2\pi}\\\text{Putting }2\pi r = C:\\\Rightarrow A = \dfrac{C \times C}{4 \pi}\\\Rightarrow A = \dfrac{C^2}{4 \pi}$

Hence, <em>A</em> in terms of <em>C</em> can be represented as:

$A = \dfrac{C^2}{4\pi}$

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3 years ago

Find the product in its simplest form<br><br> 2/5 * 3/7

Mamont248 [21]

Answer:

6/35

Step-by-step explanation:

I just used my calculator...

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2 years ago

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If f(x) = 2x + 1 and g(x) = x2 + 5,<br> what is g(f(2))?

Amiraneli [1.4K]

Answer:

30 if that is an $x^{2}$ in g(x)

Step-by-step explanation:

f(2) = 2x + 1

= 2(2) + 1

= 4 + 1

f(2) = 5

g(5) = $x^{2}$ + 5

= $5^{2}$ + 5

= 25 + 5

g(5) = 30

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2 years ago

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$8.50 x 1.06 = $9.01

The 1.06 comes from the cost of the whole shirt (1) plus the amountof tax (.06) added together.

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2 years ago

A computer manufacturer shipped a total of 50 machines to its two warehouses, one in west and one in east. It cost 20$ per machi

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E + w = 50.....w = 50 - e
25e + 20w = 1090

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25e + 1000 - 20e = 1090
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e = 90/5
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2 years ago

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