Which is a rational number? A.9 B. 15 C. 28 D. 52

Answers

Answer 1

Answer: A rational number is a number that can be expressed as a fraction, therefore all integers are rational numbers

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The function f is defined by f(x) = (x + 3)(x + 1).The graph of f in the xy-plane is a parabola. Which
of the following intervals contains the x-coordinate
of the vertex of the graph of f?

Answers

Answer:

Below in bold.

Step-by-step explanation:

The zeroes ( = x-intercepts) are x = -3 and x = -1.

So the x -coordinate of the vertex is between x = -3 and x = -1.

The actual x-coordinate is halfway between these value: at x = -2.

Answer:

x = -3 or x = -1

Step-by-step explanation:

f(x) = (x + 3)(x + 1)

⇒ x = -3 or x = -1

CHECK MY ANSWER AND HELP WITH SOME QUESTIONS I BEG YOU! :( 15 POINTS

Answers

Soo all of them are correct , number 2 could be reasonable . The rest , im waiting on you to do so I can check them .. if you want me too.
dose this help?

All of them are correct!
I hope this helps, I'm debating on #2.

Can u help me with this full sheet of work

Answers

sometimes it takes a while to learn them but youll get it:)
1. she
2. they
3. him
4. she
5. them
6. it
7. Nate, he
8. Juwon, him
9. the sky, it
10. Mrs. P, her
11. a great catch, it
12. the coach, his OR new players, they

I'm not very good at explaining pronouns, at least not better than your paper explains it. The best I can do to explain is say each choice in the sentence out loud, and whichever sounds really really weird is probably the wrong one.

1. she
2. they
3. him
4. she
5. them
6. it

Since I can't underline twice, the pronoun will be in italics as well.

7. Nate; he
8. Juwon; him
9. The sky; it
10. Mrs. Panizzi; her
11. catch; it
12. coach; his, and coach, players; they

Solve for x.
7x + 17 = 3x + 21

Answers

Answer:

x equals 1

combine the terms

The radius of a hydrogen atom is about 0.000000106 millimeter. Write the length of this radius in scientific notation:__________ millimeter(s)

In the lines below, explain how you determined your answer:

_______________________________________________________________________________________________________________________________________

Answers

In order to put a number into scientific notation, you multiply or divide the number by multiples of 10 until your base number is between 1 and 10 then you raise the number to the negative or positive exponent in the amount that you used to multiply or divide the number... Let me show you...

0.000000106 millimeter

Every time you multiply by 10, you move the decimal one place to the right. In this case if you multiply by 10 seven times, the decimal moves 7 places to the right. Now you have

1.06 ... but you can't just change a number so you have to show how your number is equivalent to the original number. You do this with the exponents. If you raise the new number to the -7 exponent, it shows you have to move the decimal 7 places to the left to expand to your original number. So the scientific notation would be...
1.06 × 10^-7

*note- if you move the decimal to the left you would have a positive exponent. If you move it to the right you'll have a negative exponent.

0.000000106mm,

We move the decimal point from the left, until it gets to 1.06. And the point moves 7 times.

= 1.06 × 10⁻⁷ mm in scientific notation.

I need answers for 32 to 26

Answers

The numbers are 48, 56, 29, __, 42 and 27
The median is 37 and the range is 29.
First arrange the numbers in order from smallest to largest.

27, 29, 42, 48, 56
The median is 37 so the unknown number must fall between 29 and 42.

27, 29, ___ , 42, 48, 56
Because there are 6 numbers there is no middle number. The median will be the average of the 3rd and 4th number.
Let the unknown number be X
(X + 42) divided by 2 = 37
X + 42 = 74
X = 32

The range is from 27 to 56 which is 29

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