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3 years ago

Solve:

Mathematics

2 answers:

pogonyaev3 years ago

8 0

The answer is E. X>-34

disa [49]3 years ago

3 0

The answer is A. x is greater than -50

- (x-8/6) = 7
x-8/6 = -7
x-8 = -42
x = -42+8
x = -50

X is greater than -50

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A ball is dropped from a height of 180 meters. The height of the ball can be represented by

Alex Ar [27]

I think it is C but it also could be B as well

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3 years ago

Mr. fudge is going to roll two fair dice. what is the probability that the sum will be 4 or less?

Kay [80]

Answer:its going to be 8

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3 years ago

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

Solve. Show your work. 0.24+ 0.532 =

garik1379 [7]

Answer:

0.772

Step-by-step explanation:

0.24+ 0.532 =

Line up the decimals

0.24

+ 0.532

------------

0.772

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3 years ago

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beks73 [17]

The answer is 81 because 27 x 3

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3 years ago

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