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2 years ago

5

3. An art class charges each student $3 to attend plus a fee for supplies. Today, $20 was collected for the 5 students attending

the class.

1 answer:

Igoryamba2 years ago

3 0

Answer:

tax =1

Step-by-step explanation:

20=5(3+x)

4=3+x

x=1

x as in tax

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Find the area of a circle with a radius of 6 ft. Round off your answer to one decimal point. (The formula for the area of a circ

butalik [34]

Answer:

Using 3.14 for pi A = 113.0 ft^2

Using the pi button A = 113.1 ft^2

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

A = pi ( 6)^2

A = 36 pi

Using 3.14 for an approximation for pi

A = 36(3.14) = 113.04

To 1 decimal

113.0

Using the pi button

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3 years ago

Write an equation of a circle given the center (-4,4) and radius r=5

Irina-Kira [14]

Answer:

Step-by-step explanation:

Equation of circle: (x - h)² + (y - k)² = r² where (h,k) is the center.

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x² + 8x + y² - 8y + 16 + 16 -25 = 0

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3 years ago

Write the set { 1, 3, 7, 15, 31, 63 } in set builder form

Sholpan [36]

Answer:

{ x : x = 2^n -1 , n ∈ N}

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Step-by-step explanation:

Mathematically, we can rewrite each term in the set as follows;

1 = 2^1 - 1

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3 years ago

Use the identity below to complete the tasks:

quester [9]

Answer:

$a=[2q^{2}r]$

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Step-by-step explanation:

we have

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we know that

$8q^{6}r^{3}=(2^{3})(q^{2})^{3}r^{3}=[2q^{2}r]^{3}$

$27s^{6}t^{3}=(3^{3})(s^{2})^{3}t^{3}=[3s^{2}t]^{3}$

therefore

$a=[2q^{2}r]$

$b=[3s^{2}t]$

substitute

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3 years ago

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