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IrinaVladis [17]

2 years ago

5

7c4/7p4 evaluate the expression. 7c4 is for combination ; 7p4 is for permutation

1 answer:

SVETLANKA909090 [29]2 years ago

4 0

7C4/7P4 = 35/840 = 1/24

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Tia was flying her model airplane. it took the airplane 5 seconds to go 90 feet. what was the average rate of speed of the model

9966 [12]

By definition, the speed is given by the quotient between the distance traveled and the time it takes to travel that distance. We have then that the expression for speed is as follows
v = d / t
where
d: distance
t: time
Substituting
v = (90feet) / (5s) = 18feets / s
answer
the average rate of the airplane model, in feet per second was 18feets / s

4 0

2 years ago

Read 2 more answers

How do you do the shortcut method

Gala2k [10]

<span>Add both the result (1×3 + 1×3) = 6 and write down to the left of 9 (result ofstep 1).

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8 0

2 years ago

A triangle in the coordinate plane has coordinates of (2,3), (-4,-5), and (-2,4). It is translated 3 units down. What are it’s n

Sophie [7]

Answer:

see below

Step-by-step explanation:

translated 3 units down whic means -3 on the y

hence T1 (2,0), T2 (-4,-8), T3 (-2, 1)

3 0

2 years ago

Write the slope-intercept form of the equation of the line that is perpendicular to and passes through Point X. Show all work fo

Semmy [17]

Answer:

$y =\dfrac{12}{5}x + 22$

Step-by-step explanation:

Slope-intercept form of line:

First find the slope of the line AB. ie, m

Slope of the perpendicular line = -1/m

(2 , 3) ⇒ x₁ = 2 & y₁ = 3

(-10, 8) ⇒ x₂ = -10 & y₂ = 8

$\boxed{Slope=\dfrac{y_2-y_1}{x_2-x_1}}$

$= \dfrac{8-3}{-10-2}\\\\=\dfrac{5}{-12}\\\\=\dfrac{-5}{12}$

$\sf slope \ of \ the \ perpendicular \ line \ m_1 = \dfrac{-1}{m}= -1 \ \div \dfrac{-5}{12}$

$\sf = -1 * \dfrac{12}{-5}=\dfrac{12}{5}$

Equation of the required line: y = mx + b

$y =\dfrac{12}{5}x+b$

The line passes through (-5 , 10). Substitute in the above equaiton,

$10 =\dfrac{12}{5}*(-5) + b\\\\ 10 = (-12) + b\\\\$

10 + 12 = b

b = 22

Equation of the line:

$y =\dfrac{12}{5}x + 22$

3 0

2 years ago

He how do you do this

OlgaM077 [116]

Answer:

I'm not sure. have you tried googling? Also where is comments on this site I'm kinda new

Step-by-step explanation:

4 0

1 year ago