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RSB [31]
4 years ago
15

Which expressions are polynomials

Mathematics
1 answer:
qwelly [4]4 years ago
4 0
B and d are polynomial expressions

b. x(6x + 5)

d. -x(x - 5)
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Please help! functions operations.
Zielflug [23.3K]

The Answer is <u>A. 3. :D</u>

3 0
4 years ago
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One side of a square flower bed is 21 feet long. How many plants are needed if they are to be spaced 21 inches apart around the
Lapatulllka [165]

Answer:

48 plants.

Step-by-step explanation:

On one side there would be  21 * 12  inches / 21 inches =- 12 plants.

There are 4 sides so that makes 48 plants.

4 0
4 years ago
Complete the equation of the line through (-9,-9)(−9,−9)left parenthesis, minus, 9, comma, minus, 9, right parenthesis and (-6,0
saw5 [17]

Answer:

The equation of the line is;

y = 3x + 18

Step-by-step explanation:

We want to write the equation of the line through (-9,-9) and (-6,0)

we start by calculating the slope of the line

m = (y2-y1)/(x2-x1) = (0+ 9)/(-6+9) = 9/3 = 3

The general equation of the line is;

y = mx + c

y = 3x + c

To get c, we use any of the points

we substitute for example -6 for x and 0 for y

0 = 3(-6) + c

c = 0 + 18 = 18

So the equation of the line is;

y = 3x + 18

4 0
3 years ago
Find the slope of the line that passes through the two<br> points.<br> (12, 15 ) and (5,7)
maria [59]
Slope of the line that passes through the two point is -2/7
6 0
3 years ago
a storeroom 21 feet long, 15 feet wide, and 11 feet high was enlarged to a length of 25 feet and a width of 17 feet. how many cu
xenn [34]
<h2>1210 cubic feet</h2>

Step-by-step explanation:

       Initial dimensions of the storeroom were 21\text{ }ft length, 15\text{ }ft width and 11\text{ }ft height.

       The room is in the shape of a cuboid. Volume of a cuboid = V=l\times b\times h, where l,b,h are the length, width and height of the cuboid.

       So, Volume of storeroom initially = 21\text{ }ft\text{ }\times15\text{ }ft\text{ }\times11\text{ }ft\text{ }=3465\text{ }ft^{3}\text{ }

       Finally, the length was increased to 25\text{ }ft and width to 17\text{ }ft.

       Final volume of storeroom = 25\text{ }ft\text{ }\times 17\text{ }ft\text{ }\times 11\text{ }ft\text{ }=4675\text{ }ft^{3}\text{ }

       Increase in volume = 4675\text{ ft}^{3}-3465\text{ ft}^{3}=1210\text{ ft}^{3}

∴ 1210 cubic feet of storage was added.

7 0
3 years ago
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