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satela [25.4K]
3 years ago
15

Would you measure the length of a jump rope in inches or feet explain

Mathematics
1 answer:
shutvik [7]3 years ago
6 0
Feet, its in a larger scale, and jump ropes are long objects.
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The ratio of the sum of my favorite number and 9 to 15 is the same as the ratio of 3 to 5. What is my favorite number?
Blababa [14]

Let

x---------> my favorite number

we know that

(x+9)/15=3/5------> 5*(x+9)=15*3-----> divide by 5 both sides----> (x+9)=3*3

x+9=9------> x=0

therefore

the answer is

My favorite number is 0

8 0
3 years ago
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Simplify the expression.<br> 7x2 + 3 - 5(x2 - 4)<br> 2x2-17<br> 2x2-1<br> 2x2 + 23<br> 25x2
Blizzard [7]

Answer:

1. 14+3-5(-2)= 17+10=27

2. 14-17= -3

3. 4-1=3

4. 4+23=27

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3 0
3 years ago
100 points please help
Eva8 [605]
V= b x h = 5 x 18 = 90ft
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Our solar system is approximately 27,000 light-years from the center of the Milky Way. Therefore, what is true when we observe t
aalyn [17]

Answer:

We are observing the galactic center as it was 27,000 years ago

Step-by-step explanation:

The Galactic Center, or Galactic Centre, is the rotational center of the Milky Way. It is 8,122 ± 31 parsecs (26,490 ± 100 ly) away from Earth in the direction of the constellations Sagittarius, Ophiuchus, and Scorpius where the Milky Way appears brightest. It coincides with the compact radio source Sagittarius A*

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What is the equation (simplified) the inverse of y=2x^2?
Yuki888 [10]
2x^2=y\ \ \ |divide\ both\ sides\ by\ 2\\\\x^2=\dfrac{y}{2}\\\\\boxed{x=\sqrt{\frac{y}{2}}}\\\\x=\dfrac{\sqrt{y}}{\sqrt2}=\dfrac{\sqrt{y}\cdot\sqrt2}{\sqrt2\cdot\sqrt2}\to\boxed{x=\dfrac{\sqrt{2y}}{2}}\\\\\\\boxed{f(x)=2x^2\to f^{-1}(x)=\dfrac{\sqrt{2y}}{2}}
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3 years ago
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