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Llana [10]
2 years ago
15

A2b2c2 for a = 2, b = 3, and c = 4.

Mathematics
1 answer:
aliya0001 [1]2 years ago
5 0

Answer:

576

Step-by-step explanation:

2^2 x 3^2 x 4^2

4 x 9 x 16

36 x 16

576

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-3x3=<br> Heeeeeeeellllllllllllpppppppppp<br> Mmmmmeeeeeee
vlada-n [284]

Answer:

-3*3=-9

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
On a number line, point D is at -3, and point E is at 6. The point F lies on DE. The ratio of DF to FE is 2:3. Where does point
expeople1 [14]

Answer: point F is at <u>   0.6   </u> on the number line

=============================================================

Explanation:

The ratio 2:3 scales up to 2x:3x for some positive real number x.

This means the distance from D to F is 2x units, and the distance from F to E is 3x units. Combine those two smaller distances to get 2x+3x = 5x to represent the full distance from D to E.

D is at -3 and E is at 6. This is a distance of 9 units since |-3-6| = |-9| = 9

Set this equal to the 5x from earlier and solve

5x = 9

x = 9/5

x = 1.8

This leads to 2x = 2*1.8 = 3.6

Therefore, we'll move 3.6 units from -3 to -3+3.6 = 0.6 which is the location of point F on the number line.

Notice that from 0.6 to 6 is 5.4 units and that 3x = 3*1.8 = 5.4 matches up to help confirm the answer.

5 0
2 years ago
QUESTION 1
Kitty [74]

It's difficult to make out what the force and displacement vectors are supposed to be, so I'll generalize.

Let <em>θ</em> be the angle between the force vector <em>F</em> and the displacement vector <em>r</em>. The work <em>W</em> done by <em>F</em> in the direction of <em>r</em> is

<em>W</em> = <em>F</em> • <em>r</em> cos(<em>θ</em>)

The cosine of the angle between the vectors can be obtained from the dot product identity,

<em>a</em> • <em>b</em> = ||<em>a</em>|| ||<em>b</em>|| cos(<em>θ</em>)   ==>   cos(<em>θ</em>) = (<em>a</em> • <em>b</em>) / (||<em>a</em>|| ||<em>b</em>||)

so that

<em>W</em> = (<em>F</em> • <em>r</em>)² / (||<em>F</em>|| ||<em>r</em>||)

For instance, if <em>F</em> = 3<em>i</em> + <em>j</em> + <em>k</em> and <em>r</em> = 7<em>i</em> - 7<em>j</em> - <em>k</em> (which is my closest guess to the given vectors' components), then the work done by <em>F</em> along <em>r</em> is

<em>W</em> = ((3<em>i</em> + <em>j</em> + <em>k</em>) • (7<em>i</em> - 7<em>j</em> - <em>k</em>))² / (√(3² + 1² + 1²) √(7² + (-7)² + (-1)²))

==>   <em>W</em> ≈ 5.12 J

(assuming <em>F</em> and <em>r</em> are measured in Newtons (N) and meters (m), respectively).

3 0
3 years ago
Which side lengths form a right triangle?
deff fn [24]

Answer:

b

Step-by-step explanation:

6^2+8^2=100

sqrt of 100 = 10 so it would form a right triangle

8 0
3 years ago
A scatter plot is made to model the amount of money left to pay on a credit card. The data used for the scatter plot are shown i
NISA [10]

The y-intercept of the given table is 2000.

<u>Step-by-step explanation:</u>

Write the table in the ascending order.

From the table, calculate the rise and run to find the slope of the line.

rise=y_2-y_1.\\run =x_2-x_1.

Choose points (0,2000) and (1,1800).

rise= -200 and run=1.

Slope m = -200.

The line equation is y=mx+c.

Apply the slop value in the equation,

y= -200x+c.

To find the y-intercept substitute a value in the above equation.

Substitute(1,1800),

1800 = -200(1)+c.

2000=c.

y= -200x+2000.

The y-intercept is the point where the line passes through in the vertical y-axis at the origin.

6 0
3 years ago
Read 2 more answers
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