The number of questions in the test is 30
Step-by-step explanation:
Let's call the total number of questions in the test N.
We know that Laura answered 27 questions, and these 27 questions represent the 90% of the test.
Therefore, we can say that 27 is the 90% of N.
Re-writing the percentage as a fraction,
This means that:
And now we can solve for N to find the number of questions in the test:
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Answer:
300
Step-by-step explanation:
5fg
5(6)(10)=300
Answer:
To find the geometric mean of two numbers, just find the product of those numbers and take the square root!
Step-by-step explanation:
Answer:
2 2
1 -3
Step-by-step explanation:
2b=[4 4]
2 -6
b=[4/2 4/2]
2/2 -6/2
b=[2 2]
1 -3
Answer:
see below
Step-by-step explanation:
the actual way of writing sin inverse is arcsine, not sin⁻¹
since the output of sin is from -1 to 1, the domain of arsince is from -1 to 1. This is different than 1/sin(x), whose domain is all real numbers. we now write sin⁻¹ to fit it on the tiny buttons on our calculators
