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OLga [1]
3 years ago
8

(14x^2 - 14) + ( -10x^2 - 10x + 10)

Mathematics
1 answer:
lana66690 [7]3 years ago
7 0

(14x^2 - 14) + ( -10x^2 - 10x + 10)\\\\=14x^2 - 14-10x^2 - 10x + 10\\\\=(14x^2-10x^2)+(-10x)+(-14+10)\\\\=4x^2-10x-4

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What is the approximate length of arc s on the circle below? Use 3.14 for
ryzh [129]

The length of arc is 69.1 feet

<em><u>Solution:</u></em>

<em><u>The length of arc when angle given in degrees is given as:</u></em>

Arc\ length = \frac{ \theta }{360} \times 2 \pi r

Where,

r is the radius

\theta is the central angle in degrees

From given,

r = 12\ feet\\\\\theta = 330^{\circ}

<em><u>Substituting the values we get,</u></em>

Arc\ length = \frac{ 330 }{360} \times 2 \times 3.14 \times 12\\\\Arc\ length = \frac{ 330 }{360} \times 6.28 \times 12\\\\Arc\ length = 69.08 \approx 69.1

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5 0
3 years ago
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Step-by-step explanation:

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Step-by-step explanation:

8 0
4 years ago
Please help I dont know what to do!!!
Olenka [21]
Hey John

Let's start solving #1

x/4 = 3.5/28
Cross multiply
(x)(28) = (3.5)(4)
28x = 14
Divide both sides by 28
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x = 1/2

Next, let's solve the second one

\frac{3}{5} +  \frac{4}{5x} +  \frac{7}{10x} + 1 \frac{1}{2} = 5 \frac{3}{5}
Simplifies to:
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Cross multiply
(105x + 75)(5) = (28)(50x)
525x + 375 = 1400x
Subtract 1400x to both sides
525x + 375 - 1400x = 1400x - 1400x
-875x + 375 = 0
Then subtract 375 from both sides
-875x + 375 - 375 = 0 - 375
-875x = -375
To find x, divide both sides by -875
-875x/-875 = -375/-875
x = 3/7

Let me know if you have questions about the answer.

Best of luck with your studies!

6 0
4 years ago
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julia-pushkina [17]

Answer:

Hope this helps

accoding to the web "He started out 25 meters below the edge of the volcano. It takes him 6.25 seconds to reach the edge."

7 0
3 years ago
Read 2 more answers
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