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kenny6666 [7]
3 years ago
15

Evaluate the expression when y = 2. 4 + y + 7 A 13 B 15 C 18 D 22

Mathematics
2 answers:
Yakvenalex [24]3 years ago
8 0
Its 13 a because its a and i got it right XD but im fr its 13
Korvikt [17]3 years ago
6 0
Y=2×4+y+7
y=8+y+7
y=8+7+y
y=15+y
-y -y

you have 15 left when you eliminate the Ys
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Answer:

Width of the rectangle is: \mathbf{Width= 9x^6 y^4}

Option C is correct.

Step-by-step explanation:

Area of rectangle = 54x^9y^8

Length of rectangle = 6x ^ 3y^4

We need to find width of rectangle.

The formula used is:

Area\:of\:rectangle=Length\times Width\\Width=\frac{Area\:of\:rectangle}{Length}

Putting values in the formula to find Width of rectangle

Width=\frac{Area\:of\:rectangle}{Length}\\Width=\frac{54x^9y^8}{6x^ 3y^4}

Using the exponent rule: \frac{a^m}{a^n}=a^{m-n}

and simplifying the terms we get

Width=\frac{54x^9y^8}{6x^3y^4}\\Width=9x^{9-3} \: y^{8-4}\\Width=9x^6 y^{4}

So, Width of the rectangle is: \mathbf{Width= 9x^6 y^4}

Option C is correct.

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