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barxatty [35]
3 years ago
10

Find the coefficient of x^4 in the expansion of (x−9)^8 Please I need help!!

Mathematics
1 answer:
alexdok [17]3 years ago
5 0

Answer:

<u>4</u><u>5</u><u>9</u><u>2</u><u>7</u><u>0</u>

  • <u>is</u><u> </u><u>the</u><u> </u><u>coefficient</u>
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The length of a rectangular house is two and a half times its width. Solve the problem using x to denote the shorter side of the
denpristay [2]

a.  The construct the expression for the area of the rectangle in terms of x is y=2.5x

b. The area should be 2,560.

Given that,

  • the length of a rectangular house is two and a half times its width.

Based on the above information, the calculation is as follows:

a) The expression should be y = 2.5x

b) The area should be

=2.5x^2\\\\= 2.5(32)^2  

= 2560

Learn more: brainly.com/question/1301963?referrer=searchResults

3 0
2 years ago
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Pleasee help, thank you so much
dezoksy [38]

Answer:

-2

Step-by-step explanation:

Use the slope formula when given two points

Slope formula = \frac{y_2-y_1}{x_2-x_1}

( the x and y values are determined by the given points )

Given the points ( 0 , 5 ) and ( 1 , 3 )

Plug in the x and y values of the given points into the formula

( remember y values on top x values on bottom )

slope=\frac{5-3}{0-1} \\5-3=2\\0-1=-1\\slope=\frac{2}{-1} =-2

Hence, the answer is D

5 0
3 years ago
3 cm<br> 4 cm<br> 6 cm<br> Find the volume. Round to the nearest tenth if necessary.
ZanzabumX [31]

Answer:

72 cm squared

Step-by-step explanation:

3 x 4 x 6 = 72 cm squared

5 0
3 years ago
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A line that includes the point (0,0) has a slope of -9. What is its equation in slope-intercept
ikadub [295]
Y=-9x because y=mx+b is the formula so plug in the slope, m(-9) and the x-intercept, x(0)
3 0
3 years ago
PLEASSEEEE HELP ASAP , WHAT IS THE SHAPE OF THE BASE AND SURFACE AREA?
zmey [24]

Answer:

Total surface area : 733

The shape of the base is a rectangle with sides 11 in. and 12 in.

Step-by-step explanation:

The shape of the base is a rectangle with sides 11 in. and 12 in.

The surface area is the sum of the areas of the 5 sides.

Area of the base = 11*12 = 132

Area of the two triangles =  (11*16)/2 = 88

Area of the back rectangle = 192

The theorem of Pitagora to find the oblique side: square root of (11*11 + 16*16)= 19.42 in.

So the area of the oblique face: 19.42* 12 = 233 (almost :) )

So total surface area: 132 + 88*2+192+233= 733 square in

3 0
2 years ago
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