√20 = √4x5 = 2√5
√56²= 56
√[150.(x³)(k⁴)] = √(6*25)(x².x).k⁴ ==>5xk²√6x
√[(14q) *2√(4q)] = 14(q√2²q) ==>28q√q
There are 38 five point questions and 30 two points questions.
Step-by-step explanation:
Given,
Worth of points in test = 250
Number of questions = 68
Let,
x represent the number of 5 points questions
y represent the number of 2 points question
According to given statement;
x+y=68 Eqn 1
5x+2y=250 Eqn 2
Multiplying Eqn 1 by 2

Subtracting Eqn 3 from Eqn 2

Dividing both sides by 3

Putting x=38 in Eqn 1

There are 38 five point questions and 30 two points questions.
Keywords: linear equation, elimination method
Learn more about elimination method at:
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Answer:9z - 63 = 0
what does z = ?
9 x 7 = 63 - 63 = 0
z = 7
Step-by-step explanation:hope this helps :)
The answer to your question is A