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3 years ago

A square has a perimeter of 80 m. What is the length of each side?

Mathematics

2 answers:

Oduvanchick [21]3 years ago

6 0

Answer:

20 m

$p = 4a \: thus \: a = p \div 4 = 80 \div 4 = 20 \: m$

mina [271]3 years ago

5 0

Answer:

Step-by-step explanation:

P=4L

80=4L

L=80/4

L=20m

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What is the y-intercept of the line that represents y = -4x+12

lukranit [14]

Answer:

Step-by-step explanation:

because 12 is where the line intercepts the y-axis

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4 years ago

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Nine times the sum of a number 7 and 3 equals .

Artist 52 [7]

Answer:

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3 years ago

Consider the following series. 1 4 + 1 8 + 1 12 + 1 16 + 1 20 Determine whether the series is convergent or divergent. Justify y

patriot [66]

Answer:

The series diverges

Step-by-step explanation:

First, let's find the sequence:

$4, 8, 12, 16, 20,...,$

As we can see, they are multiples of 4, so one possible sequence is:

$4,8,12,16,20,...,=4n\hspace{8};\hspace{3}n\in Z$

Hence, we can represent the series as:

$$$\sum_{n=1}^{\infty} 4n$

Let's use the zero test which states:

$$$\Sigma a_n$$\\Diverges\hspace{3}if\\\\ \lim_{n \to \infty} a_n \neq 0$

So:

$\lim_{n \to \infty} 4n= 4 \lim_{n \to \infty} n\\ \\ \lim_{n \to \infty} n=\infty\\ \\4\infty= \infty\\\\Hence\\\\ \lim_{n \to \infty} 4n=\infty$

Therefore, by the zero test, the series diverges

3 0

3 years ago

Solve for u. what us u (the variable)?

pashok25 [27]

Answer:

Step-by-step explanation:

First, if you get 2 by subtracting 2/3 from U, it would be equally logical that you can add 2/3 to 2 to get U.

2/3+2=2 2/3

The answer to your question should be 2 2/3.

Sorry if this doesn't help/is incorrect.

6 0

4 years ago

The sum of 2 time a number and -7, added to 5 times the number

DIA [1.3K]

Answer:

7x - 7

Step-by-step explanation:

Variable: X = the unknown number

2x + (-7) + 5x

= 7x - 7

4 0

4 years ago