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Darya [45]
4 years ago
12

Which number is rational, an integer, and a real number?

Mathematics
1 answer:
Margarita [4]4 years ago
7 0
Answer:
1.5

Explanation:
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Answer the 3 screenshotted questions below. 30 points!
Triss [41]

Answer:

13.  36a^2b^4π  

14. 16x^3y^4π

15. -\frac{c^3}{4a^7b^3}

Step-by-step explanation:

13.

A = π * r^2

r = 6ab^2

A = π*  (6ab^2)^2

A = π * (6ab^2)(6ab^2)

A = π * 36a^2b^4

A = 36a^2b^4π  

14.

V = π * r^2 * h

r = 2x

h = 4xy^4

V = π * (2x)^2 * 4xy^4

V = π * 4x^2 * 4xy^4

V = π * 16x^3y^4

V = 16x^3y^4π

15. \frac{3a^{-4}b^2}{-12a^3b^5c^{-3}} = -\frac{c^3}{4a^7b^3}

\frac{3a^{-4}b^2}{-12a^3b^5c^{-3}}

\frac{a^{-4}}{-4a^3b^5c^{-3}}

\frac{b^2}{-4^{3+4}b^5c^{-3}}

\frac{b^2}{-4^7b^5c^{-3}}

\frac{1}{-4a^7b^{5-2}c^{-3}}

\frac{1}{-4a^7b^3c^{-3}}

\frac{c^3}{-4a^7b^3}

-\frac{c^3}{4a^7b^3}

Hope this helps!

3 0
3 years ago
What’s the correct answer for this question?
LiRa [457]

Answer:

B.

Step-by-step explanation:

The cottage inside the pen is a shape of a cylinder.

3 0
4 years ago
Read 2 more answers
For what values of k the relation R:{(k2 , 5), (3k, 6)} is not a function?
n200080 [17]
<h3>Answer:  k = 0 or k = 3</h3>

Explanation:

If you have repeated x values, then you wont have a function. For example, the points (1,5) and (1,6) mean we don't have a function since the input x = 1 leads to multiple outputs y = 5 and y = 6 simultaneously. For a function to be possible, we must have any input lead to exactly one output only.

What we do is set the x coordinates (k^2 and 3k) equal to each other and solve for k

k^2 = 3k

k^2-3k = 0

k(k-3) = 0 .... factoring

k = 0 or k-3 = 0 .... zero product property

k = 0 or k = 3

If k = 0, then (k^2,5) becomes (0,5). Also, (3k,6) becomes (0,6). The two points (0,5) and (0,6) mean the graph fails the vertical line test.

Similarly, if k = 3, then (k^2,5) becomes (9,5) and (3k,6) = (9,6). Another vertical line test failure happens here to show we don't have a function.

7 0
3 years ago
There are 4 keys on a keychain. One of the keys starts a car. If a key is randomly chosen, what is the probability that it start
Evgen [1.6K]
B because 4 keys 100÷4 is 25 and that's 1 key starts a car
8 0
3 years ago
Read 2 more answers
18. The table shows the amount of money in a savings account after several weeks.
anygoal [31]

Answer:

a. Arithmetic

b. a_{n} = a_{n-1} + 15

c. a_{n} = 15n + 125

Step-by-step explanation:

A sequence is arithmetic when the difference between one term and the next is a constant. On the other hand, a sequence is geometric when the next term is found by multiplying the previous by a constant.

In this case, the next term of the sequence can be found by adding $15. Therefore, the sequence is <em>ARITHMETIC ✔️</em>

The recursive formula will be the following: a_{n} = a_{n-1} + 15

The explicit formula is the following: a_{n} = 15n + 125

8 0
3 years ago
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