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givi [52]
2 years ago
13

Evaluate 12 p divided by q plus 4 left parenthesis r minus 9 right parenthesis for pequals5​, qequals6​, and requals16. Use a pe

ncil and paper. Choose different values for one variable at a time. Explain the differences you see in the values of the expression.
12 p divided by q plus 4 left parenthesis r minus 9 right parenthesis equals
nothing
Mathematics
1 answer:
nevsk [136]2 years ago
6 0

Answer:

=3

Step-by-step explanation:

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A plane takes off from an airport and flies at a speed of 400km/h on a course of 120° for 2 hours. the plane then changes its co
butalik [34]

Answer:

Distance from the airport = 894.43 km

Step-by-step explanation:

Displacement and Velocity

The velocity of an object assumed as constant in time can be computed as

\displaystyle \vec{v}=\frac{\vec{x}}{t}

Where \vec x is the displacement. Both the velocity and displacement are vectors. The displacement can be computed from the above relation as

\displaystyle \vec{x}=\vec{v}.t

The plane goes at 400 Km/h on a course of 120° for 2 hours. We can compute the components of the velocity as

\displaystyle \vec{v_1}=

\displaystyle \vec{v_1}=\ km/h

The displacement of the plane in 2 hours is

\displaystyle \vec{x_1}=\vec{v_1}.t_1=.(2)

\displaystyle \vec{x_1}=km

Now the plane keeps the same speed but now its course is 210° for 1 hour. The components of the velocity are

\displaystyle \vec{v_2}=

\displaystyle \vec{v_2}=km/h

The displacement in 1 hour is

\displaystyle \vec{x_2}=\vec{v_2}.t_2=.(1)

\displaystyle \vec{x_2}=km

The total displacement is the vector sum of both

\displaystyle \vec{x_t}=\vec{x_1}+\vec{x_2}=+

\displaystyle \vec{x_t}=km

\displaystyle \vec{x_t}=

The distance from the airport is the module of the displacement:

\displaystyle |\vec{x_t}|=\sqrt{(-746.41)^2+492.82^2}

\displaystyle |\vec{x_t}|=894.43\ km

8 0
3 years ago
The number 84 can be expressed as the sum of 54 + 30. Which shows how to use the distributive
TEA [102]

Answer:I onesly dont no

Sorry I have no friends

Step-by-step explanation:

6 0
3 years ago
I will give brainlest if it’s right Which expression is equivalent to (24 + 9)?
MrRissso [65]

Step-by-step explanation:

the answer is D

this is because, 24 + 9 = 33

and (3×8 + 3×3 =33)

6 0
2 years ago
Read 2 more answers
Which set of ordered pairs represents y as a function of X? a{(-9, 2), (0, 6), (1, -2), (-3, 6)} b{(-1,0), (4, 3), (-7, -3), (-1
olga nikolaevna [1]
A is your answer

Explanation:

When dealing with functions, x’s never repeat.
8 0
2 years ago
If it took 8 people 10 hours to build a barn, how long would it take 14 people to build the same barn?
Basile [38]

Answer:

if 8 people take 10 hours then

1 people 10 / 8 = 1.25 hours

then 14 people =

14 * 1.25 = 17.5 hours

8 0
2 years ago
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