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andrew11 [14]
3 years ago
7

A sports team is building a new stadium on a rectangular lot of land. If the lot measures 7x by 7x and the sports field will be

5x by 5x, how much of the lot will be left over to build bleachers on?
A. 4x²
B. 24x²
C. 74x²
D. 49x² - 25x²
Mathematics
2 answers:
padilas [110]3 years ago
7 0
7x*7x=49x^2, so the lot measures 49x^2.

The sports field, however, measures 5x*5x=25x^2.

The difference between these is 49x^2-25x^2=24x^2, or B.
Drupady [299]3 years ago
7 0
(7x · 7x) - (5x · 5x)
49x² - 25x²
24x²

It is equal to B.

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Answer:

Step-by-step explanation:

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b = base, the one labeled b on the diagram

h = height, the dotted line in the middle

so, you do pythagorean theorem with a and b to find the dotted line

a² + b² = h² (h is for height)

h = \sqrt{a^{2} +b^{2}}

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1/2 * b * h

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Multiply the expression and simplify:<br><br> (x -2) (x^2 + 3x -5) *Show all work*
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What is the slope of a line that contains the point(-5,4) and has a x intercept of -10?
Naddika [18.5K]

Answer:

\frac{4}{5}

Step-by-step explanation:

Based on the information given we can say the two points are (-5, 4) and (-10, 0).  An x-intercept is where the line crosses the x-axis giving us a y value of 0.

So, we will use the following formula, where m is equal to the slope.

m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}

Now we will plug in the x and y values given above, (-5, 4) and (-10, 0).

m=\frac{0-4}{-10+5}\\ m=\frac{-4}{-5}\\ m=\frac{4}{5}

Note: In the denominator of the first line, the -5 was changed to a 5 because in the original equation, we are told to subtract.  When you have two negatives they cancel each other out.

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3 0
3 years ago
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klemol [59]

Answer:

x=90/16,y=-150/16

Step-by-step explanation:

Simultaneous equation and we are to use elimination method

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Substrate 15 from both sides

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Add y to both sides

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Therefore x is 90/16 and y is -150/16

6 0
3 years ago
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