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Answer: 2x³ - 3x² + 7x + 8</h2>
Step-by-step explanation:
Sum = 4x³ - 3x² + 3x + 8 + (6x³ - 7x² + 4x) + (-8x³ + 7x²) <em>[write the terms as given by the quetion and group like terms]</em>
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⇒ Sum = (4x³ + 6x³ - 8x³) + (- 3x² - 7x² + 7x²) + ( 3x + 4x) + 8 <em> [complete the addition of like terms]</em>
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∴ sum = 2x³ - 3x² + 7x + 8
Answer:
Step-by-step explanation:
Given that,
Length = (2x+5) cm
Width = (x-1) cm
We need to find the area of a rectangle. The formula for the area of rectangle is given by :
A = lb
So, the required area is equal to .
the answer is d
Step-by-step explanation:
well to solve this you would do pythagreom Therom by its a right triangle you don't know x so you would do a^2 +b^2=c^2
For both problems, we'll set up equations that help to solve problems dealing with similarity.
For the first one, we can write 50/40 = x/4 (we set this up in the ratio height:shadow). This simplifies to 200 = 40x, which simplifies to x=5 (using the Division Property of Equality).
For the second one, we can do the same thing. We'll set up a ratio for the longest and shortest sides (longest:shortest). This will become 6/8 = 3/x, which simplifies to 6x = 24, which becomes x=4.
So your answers are 5 feet, and 4 (units).
:)
Answer:
Step-by-step explanation:
perimiter=2(Length+Width)
P=2(L+W)
solve for L
distribute
P=2L+2W
minus 2W
P-2W=2L
divide by 2
\frac{P-2W}{2}=L
given that P=34 units and W=6.5 units
\frac{34-2(6.5)}{2}=L
the equation would be L=p2w/2 or L= p/2=w