5 is the answer to your question.
Since y varies directly as x, you know that y=245 and x=7 can be used as a proportion, 245/7. When you multiply this proportion to 9, you get 315. This is the value of y when x=9.
y=315
Answer:
Area = 90 units^2
Step-by-step explanation:
For the area of a triangle, we can simply use the following equation:
Area = ( 1 / 2 ) * Base * Height
We are given a base of 12 and a height of 15, so we can simply plug those values into the formula to find the area.
Area = ( 1 / 2 ) * Base * Height
Area = ( 1 / 2 ) * 12 * 15
Area = 6 * 15
Area = 90
Hence, the area of our triangle is 90 units^2.
Cheers.
Factoring the roots, the values of A and B are given as follows:
<h3>What are the values of A and B?</h3>
The expression is:

We have that:

Hence:

Hence, comparing the last two equalities:
More can be learned about the factoring of roots at brainly.com/question/24380382
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The first step to solving this is to factor out the first perfect square

now factor out the second perfect square

then factor out the second perfect square

the root of a product is equal to the product of the roots of each factor

reduce the index of the radical and exponent with 2 of the first square root
12

reduce the index of the radical and exponent with 2 of the second square root
12x³

reduce the index of the radical and exponent with 2 of the third square root
12x³y²

this means that the correct answer to your question is 12x³y²

.
let me know if you have any further questions
:)