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3 years ago

What is? 8(x+3) - 2x + 18

Mathematics

1 answer:

eimsori [14]3 years ago

8 0

Answer:

6x+42

Step-by-step explanation:

First, distribute the 8.

8x+24-2x+18.

Then, combine like terms.

6x+42

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The number 0.1111... repeats forever; therefore, it is irrational. True or False.

Rasek [7]

Answer is True. We cannot write it in rational form where both numbers are finite integers. In this case we cannot represent this number as fraction of finite integers therefore it is irrational.

6 0

3 years ago

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5×10+3÷4×5+8-45×6×23÷4=

const2013 [10]

5x10+3÷4x5+8-45x6x23÷4= 1,009.125

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3 years ago

10PTS PLEASE HELP!!!!!!!

Nostrana [21]

The equation of a circle:

$(x-h)^2+(y-k)^2=r^2$

(h, k) - a coordinates of the center

r - a radius

A diameter d = 2r

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3 years ago

Suppose that the area between a pair of concentric circles is 49pi. Find the length of a chord in the larger circle that is tang

Lapatulllka [165]

Answer:

14 units

Step-by-step explanation:

We are given that the area between two concentric circles is $49\pi$

We have to find the length of chord in the larger circle that is tangent to the smaller circle.

Let $r_1,r_2$ be the radius of two circles.

$r_1$ be the radius of small circle and $r_2$ be the radius of large circle

We know that area pf circle= $\pi r^2$

Area of large circle = $\pi r^2_2$

Area of small circle = $\pi r^2_1$

Area between two circles = $49\pi$

Area of large circle -Area of small circle= $49\pi$

$\pi r^2_2-\pi r^2_1=49\pi$

$\pi(r^2_2-r^2_1)=49$

By pythagorus theorem

$AD^2=OA^2-OD^2$

$AD^2=r^2_2-r^2_1$

$AD=49$

$AD=\sqrt{49}=7$

Length of chord= $2\cdot AD$

Hence, the length of chord of the larger circle = $2\cdot7=14$ units

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3 years ago

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kondaur [170]

Answer:

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Step-by-step explanation:

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4 years ago