The width is given as = x cm
As length is given as= the length is 5 cm more than the width
The width of the rectangle is = x cm
So, length of the rectangle becomes= x+5 cm
In the given expression ( f(x) = 2x² + 1 ) when when ( x = 3 ), the value of f(x) is 19.
Hence D)19 Is the correct answer.
<h3>What is an Equation?</h3>
An equation is simply a mathematical formula that expresses the equality of two expressions, using the equals sign as a connection between them.
Given that;
f(x) = 2x² + 1, what is (fx) when x = 3
We substitute 3 for x in the equation
f(x) = 2(3)² + 1
f(x) = 2(9) + 1
f(x) = 18 + 1
f(x) = 19
In the given expression ( f(x) = 2x² + 1 ) when when ( x = 3 ), the value of f(x) is 19.
Hence D)19 Is the correct answer.
Learn more about equations here: brainly.com/question/14686792
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Answer: w-3=24
Step-by-step explanation:
11 increased by anumber is -12
11+x=-12
subtract 11
x=-11-12
x=-23
the number is -23
Answer:
79/3
Step-by-step explanation:
Evaluate r + 42/(t 3) where r = 24 and t = 6:
r + 42/(3 t) = 42/(6×3) + 24
42/6 = (6×7)/6 = 7:
7/3 + 24
Put 7/3 + 24 over the common denominator 3. 7/3 + 24 = (3×24)/3 + 7/3:
(3×24)/3 + 7/3
3×24 = 72:
72/3 + 7/3
72/3 + 7/3 = (72 + 7)/3:
(72 + 7)/3
72 + 7 = 79:
Answer: 79/3