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insens350 [35]
2 years ago
11

What does [ ] mean in math? ​

Mathematics
2 answers:
xz_007 [3.2K]2 years ago
6 0

it is a bracket used in maths

maksim [4K]2 years ago
3 0

Answer:

They are kind of like outer brackets, so if you have some expression like this:

5 + (4 × 6 + (7 - 8)),

it's better to write it like this:

5 + [4 × 6 + (7 - 8)],

so you can read it more easily.

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Sumalee won 40 super bouncy balls playing horseshoes at her schools game last night. Later, she gave two to each of her friends.
Lina20 [59]
Before jumping into doing this problem, it is important to look at all the information's that have been made available in the question. Based on those given conditions the answer to the problem can be easily deduced.
Let us assume the number of friends Sumalee has = x
Then
2x + 8 = 40
2x = 40 -8
2x = 32
x = 32/2
x = 16
So Sumalee has 16 friends. There are numerous ways to get to the answer that is required to be found. This is the easiest and the shortest method. Hope i helped you.
6 0
2 years ago
Read 2 more answers
For which value of theta is cot (theta) undefined?
sattari [20]

The cotangent function is defined as the ratio between cosine and sine of a given angle, i.e.


\cot(x) = \frac{\cos(x)}{\sin(x)}


Since you can't have zero at the denominator, the cotangent function is not defined when the sine is zero.


Let's look at your option:


\sin(90^\circ) = 1, so the cotangent is defined here


\sin(180^\circ) = 0, so the cotangent is not defined here


\sin(270^\circ) = -1, so the cotangent is defined here


\sin(450^\circ) = \sin(360^\circ+90^\circ)=\sin(90^\circ) = 1, so the cotangent is defined here

6 0
3 years ago
Read 2 more answers
Can somebody please solve question 11 for me?
love history [14]
1+tan^2(A) = sec^2(A) [Pythagorean Identities]

tan^2(A)cot(A) = tan(A)[tan(A)cot(A)] = tan(A)[1] = tan(A)


*see photo for complete solution*

6 0
3 years ago
6 to the power of 3=216. Using exponents, write three more expressions whose value is 216.
Paraphin [41]

Answer:

i think its (2 x 2^2) (3x3^2)

Step-by-step explanation:

4 0
2 years ago
How do I solve this???
olga55 [171]

Answer:

by using the graph!

Step-by-step explanation:

8 0
3 years ago
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