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Anika [276]
3 years ago
5

A radio telescope has a parabolic surface, as shown below. If the telescope is 5 m deep and 40 m wide, how far is the focus from

the vertex? *
Mathematics
1 answer:
Montano1993 [528]3 years ago
4 0

Answer:

i think the answer is  8m

Step-by-step explanation:

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Which of these numbers is irrational?<br> -3.5<br> 3.5<br> ОО<br> 35<br> √5 help
Molodets [167]

Answer:

  √5 is irrational

Step-by-step explanation:

A rational number is one that can be written exactly as an integer or ratio of integers. Written as a decimal number, it will have a finite number of digits, or a repeating decimal fraction.

<h3>Application</h3>

Usually, a number that can <em>only</em> be expressed <em>exactly</em> using a <em>symbol</em> will be irrational. For square roots, any root of an integer other than a perfect square will be irrational.

The integer 5 is not a perfect square. It is between the squares 2²=4 and 3²=9. The square root of 5 is irrational.

__

<em>Additional comment</em>

A reduced fraction whose denominator has factors other than 2 or 5 will translate to a repeating decimal. The number of repeating digits may be as many as 1 less than the denominator. For example, 1/19 has an 18-digit repeating decimal equivalent.

5 0
1 year ago
I will give brainliest to whoever can help!
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Answer:

1)open 2)false 3)5

Step-by-step explanation:

8 0
3 years ago
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Please help me with it is a project and I put 30+ points whoever can help me with this
Debora [2.8K]

Answer:

x=1

Step-by-step explanation:

Step 1: Subtract 2x from both sides.

Step 2: Add 6 to both sides.

Step 3: Divide both sides by 6.

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A package of 9 batteries cost $4.72 what is the cost per battery
klio [65]

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Step-by-step explanation:

9/4.72= 1.90

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Please help me fast and show all your work please thx ​
choli [55]
Okay so the first thing you for for is to see if you can reduce your numbers and you can in this problem. You can reduce the 8 and 12 by 4, meaning that you can divide them by 4. So your problem would now be 2x7/3. Now to calculate your product you just times 2x7 and you’re answer is 14/3 :)
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