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Gennadij [26K]
3 years ago
14

Semester 1 finals are this week for me. Any advice?

Mathematics
2 answers:
Greeley [361]3 years ago
8 0
Don't stress, study, get enough sleep, and eat breakfast. 
krek1111 [17]3 years ago
7 0
Study hard and take the test slowly. rushing will make you get all the wuestions wrong. if you need more advice, message me.
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Distance between (-6,-7) and (-4,-1)
kirill115 [55]

Answer:

i believe it is (3,6) im not 100% sure though

Step-by-step explanation:

4 0
3 years ago
Simplify <br><img src="https://tex.z-dn.net/?f=%20%20%5Csqrt%7B%20-%20180%7D%20" id="TexFormula1" title=" \sqrt{ - 180} " alt="
QveST [7]

Answer: (6\sqrt{5})i

This is the same as saying 6i\sqrt{5}

====================================================

Work Shown:

\sqrt{-180} = \sqrt{-1*36*5}\\\\\sqrt{-180} = \sqrt{-1}*\sqrt{36}*\sqrt{5}\\\\\sqrt{-180} = i*6*\sqrt{5}\\\\\sqrt{-180} = 6i\sqrt{5}\\\\\sqrt{-180} = (6\sqrt{5})i\\\\

where i = \sqrt{-1}

As the steps show above, the idea is to factor the radicand into smaller pieces where one of those pieces is the largest perfect square possible. In this case, 36 is the largest factor of 180 that's a perfect square. Then I used the rule \sqrt{A*B} = \sqrt{A}*\sqrt{B} to break up the root.

The parenthesis used at the very end is to help separate the 6\sqrt{5} from the i term. The "i" is not under the square root.

4 0
3 years ago
If 3t -7 = 5t, then 6t =
USPshnik [31]

Answer:

21

Step-by-step explanation:

3t-7=5t

subtract 3t from both sides

-7 = 2t

multiply both sides by 3

-21 = 6t

so 6t = -21

5 0
1 year ago
Read 2 more answers
Which of the following shows the best communicative property of addition ?
kumpel [21]

Answer:

In the given options, 4+5 = 5+4 shows the best commutative property.

Step-by-step explanation:

One of the properties that can be applied on numbers is commutative property. Commutative property states that the order of the numbers on which any operation is being performed, can be swapped and the answer won't change.

Commutative property can be applied on addition, subtraction and multiplication.

<u>Commutative property of Addition:</u>

Commutative property of addition states that changing the order of adding two numbers does not change the result i.e. a+b = b+a

In the given options, 4+5 = 5+4 shows the best commutative property.

3 0
3 years ago
The supermarket has 30 aisles. 10% of the aisles are empty, without any shoppers. ​How many empty aisles are there in the superm
lina2011 [118]
3

10/100=x/30
Cross multiply

100x=300
Divide each side by 100

X=3
3 0
3 years ago
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