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slavikrds [6]
3 years ago
11

At a party, everyone shook hands with everybody else. There were 66 handshakes. How many people were at the party?

Mathematics
1 answer:
BARSIC [14]3 years ago
4 0
Total handshakes will be \\2^{n} = 2^{66}

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(Two wires with lengths of 48cm and 16cm are to be cut into pieces of all the same length without remainder Find the greatest po
anastassius [24]

The longest length you can get with no extra is 56cm

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2 years ago
A ball is hurled in the air such that its horizontal (x) and vertical (y) shifts are given by the functions x(t) = 20t and y(t)
Viefleur [7K]

x(t) = 20t

y(t) = 40t - 5t^2

Since we are only interested in comparing the two at time t = 5 seconds, we plug in 5 everywhere we see the variable t and then compare x and y

x(5) = 20(5) becomes x(5) = 100

y(5) = 40(5) - 5(5)^2 becomes y(5) = 200 - 125 and then y(5) = 75

The ratio of y to x can be expressed as: y/x, so we can say the ratio is equal to 75/100 or 0.75

Answer: 0.75

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3 years ago
I need help with this question! Will mark brainliest :)
irinina [24]

Answer:

hiii

your answer is option d

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3 0
3 years ago
Read 2 more answers
Pavel, Ruth and Josh have part-time jobs.
MrMuchimi
M+m+z/3=3m
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2m+z=9m
z=7m
m+m+7m/3=3m
9m=9m
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1+1+z/3=3
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8 0
2 years ago
Enter the slope-intercept equation for the image of line ℓ after a clockwise rotation of 90°. (Hint: To find the image of line ℓ
Free_Kalibri [48]

Answer:

y = -2x - 2

Step-by-step explanation:

From the graph attached,

If the line 'l' passes through two points A(0, -1) and B(4, 1).

Rule for the rotation of any point (x, y), 90° clockwise about the origin is,

(x, y) → (y, -x)

By this rule,

A(0, -1) → A'(-1, 0)

B(4, 1) → B'(1, -4)

Let the equation of the line A'B' is,

y - y' = m(x - x')

where m = slope of the line A'B'

And (x', y') is a point lying on the line.

Slope of the line passing through A' and B' will be,

m = \frac{y_2-y_1}{x_2-x_1}

m = \frac{0+4}{-1-1}

m = -2

Therefore, equation of the line passing through (-1, 0) and slope = -2,

y - 0 = (-2)(x + 1)

y = -2x - 2

So the equation of the line after rotation of lie 'l' by 90° clockwise will be,

y = -2x - 2

7 0
2 years ago
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