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Molodets [167]
3 years ago
5

Please help me I do not understand this

Mathematics
1 answer:
stealth61 [152]3 years ago
4 0
That’s a trapezoid. To find the area of a trapezoid, you take the 2 bases (9ft and 14ft) and add them up (23ft). Then divide the sum of the 2 bases by 2 (23/2=11.5). Then you take that and multiply it by the height (7ft). So 11.5(7)=80.5ft^2.
Formula for area of trapezoid:
a+b/2•h
a=base 1. b=base 2. h=height
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Help, with solving rational equations! I am no good at it :( Solve for x: 2 over 5 plus 3 over 5 x equals quantity x plus 5 over
mamaluj [8]
If this is your equation: \frac{2}{5} + \frac{3}{5x} = \frac{x+5}{10}
Solution:
LCD for 5 and 5x is 5x
\frac{x}{x} ( \frac{2}{5} )+ \frac{3}{5x} = \frac{x+5}{10}
\frac{2x}{5x} + \frac{3}{5x} = \frac{x+5}{10}
\frac{2x+3}{5x} = \frac{x+5}{10}
10(2x+3)=5x(x+5) ←cross product
20x + 30 = 5x² + 25x  ←simplify with distributive property
0 = 5x² + 5x - 30 ←use inverse operations to collect all terms on one side
0 = x² + x - 6  ←if possible divide by numerical GCF (This case 5)
0 = (x + 3)(x - 2) ←Factor
x = -3 or x = 2
Please check by substitution in original equation... Both work
4 0
3 years ago
What is the equation of a line that has a slope of one and passes through point (5,3)?
Katarina [22]

To answer your question, it is shown in the image below:


5 0
3 years ago
Read 2 more answers
Simplifying Rational Expressions
Evgen [1.6K]
B^-2 / b^-3  = b^(-2-(-3) = b^1  = b

answer is d
4 0
3 years ago
Pls answer I need help
Lilit [14]
I believe it’s D but I’m not really sure hope this help a little
7 0
4 years ago
Read 2 more answers
The perimeter of a rectangle is 98 m. The length of the rectangle is 9 m more than four times the width. Find the dimensions of
Olenka [21]
P=98 m 

l +9=4w

p=2l+2w

98=2(4w-9) +2w

98 = 8w-18+2w

116=10w

w=11,6 m

l = 4w-9 = 4*11,6 -9 = 46,4 -9 = 37,4 m

w=11,6 m
l= 37,4 m
3 0
3 years ago
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