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vivado [14]
3 years ago
14

7.) Kathy and Andy are exercising on a track.

Mathematics
1 answer:
Leni [432]3 years ago
3 0

Answer:

1 mile

Step-by-step explanation:

4÷60×15 = 1

this is the answer

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Wewaii [24]

Answer:

B

Step-by-step explanation:

8 0
3 years ago
The radius of a circle is 15 inches. A chord is drawn 4 inches from the center of the circle. How long is the chord?
Alex73 [517]

Let X represent the length of the chord.

By using Pythagoras' Theorem:

4^2 + (X/2)^2 = 15^2

(X^2)/4 = 209

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6 0
4 years ago
What is the value of the expression 4/2^-2?<br> a. ½<br> b. 1<br> c. 8<br> d. 16
Alexus [3.1K]
2^{-2} = \frac{1}{2^{2} } =  \frac{1}{4}

\frac{4}{2^{-2} } = \frac{4}{ \frac{1}{4} } = 4 ÷ \frac{1}{4} = 4*4= 16

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8 0
3 years ago
Please help, its quick I just need help with this one that Im stuck on
umka2103 [35]

- 4k^{2}  - 4k + 6 = 0 \\  \\ 4k^{2}  + 4k - 6 - 4 = 0 \\  \\ 4k^{2}  + 4k - 10 = 0 \\  \\ k =  \frac{ - 4 + 4 \sqrt{11} }{8}  \frac{ - 4 - 4 \sqrt{11} }{8}  \\  \\ k =  \frac{ - 1 -  \sqrt{11} }{2}  \frac{ - 1 +  \sqrt{11} }{2}

6 0
4 years ago
Surface area of a cylinder
Ainat [17]

Answer:

Right cylinder

Step-by-step explanation:

Solve for surface arb

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