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3 years ago

I NEED HELP PLEASE, THANKS! :)

1 answer:

7 0

We are given that a baseball player is running forward at 3 meters per second, throwing a ball at an angle of 20 with respect to a velocity of 20 meters per second -

( Thus, the horizontal component should be 3 + 20( cos 20 ),

( Respectively the vertical component should be 20( sin 20 )

Horizontal Component = ( About ) 21.7938...

Vertical Component = ( About ) 6.8404....

Now the speed, or otherwise velocity can be calculated through the formula v^2 = ( v1 )^2 + ( v2 )^2 -

$v^2 = ( 21.8 )^2 + ( 6.84 )^2,\\v^2 = 475.24 + 46.7856,\\v^2 = ( About ) 522,\\v = 22.8 ( meters / second )\\\\Resultant Speed = 22.8 m / s$

And the direction can be calculated through the formula - $direction = tan( v^2 / v^1 ),\\direction = tan( 6.84 / 21.8 ),\\direction = ( About ) 17.4 ( degrees )$

<u><em>The resultant speed is 22.8 m / s, thrown with at an angle ( direction ) of 17.4 degrees</em></u>

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2 years ago

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Lelu [443]

Answer:

BDE

EDB

Step-by-step explanation:

Make the marked angle, D, your center point. Find the two other points of the angle, E and B. write them in order, forwards and backwards.

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3 years ago

15. During the summer, Briana runs an ice cream shop. Her biggest seller is waffle ice cream cones. She charges $1.85 for a waff

Ivahew [28]

15) It is given that the charge of the waffle cone = $1.85

Charge per scoop of an ice cream = $0.60

Let C be the total cost.

So, total charge of one wafflce cone ice cream = charge of the waffle cone + (0.6 times number of scoops

C = 1.85 + 0.6x

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C = 1.85 + 0.6(6)

= 1.85 + 3.6

= 5.45

Hence, cost of 6 scoops of ice cream = $5.45.

7 0

3 years ago

60 POINTS,5 star rating and a thanks pus branliesst!

mr Goodwill [35]

Answer:

34. a) 10 students

35. b) Together green and red make up the half of the students

Step-by-step explanation:

For number 34, the answer is 10 because it is one-fourth of 40 which is same as 40 divided by 4 which is 10.

For 35, green and red do not add up to one half

Hope it helped you!

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2 years ago

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The equation of line r is y = -1\2x - 4. If line s runs perpendicular to line r and passes through (4, -3), what would be the eq

Scrat [10]

First off, what's the slope of "r" anyway, $\bf y=\stackrel{slope}{-\cfrac{1}{2}}x-4$ .

low and behold, since "r" is in slope-intercept form, notice, it has a slope of -1/2.

now, any line perpendicular to "r", will have a negative reciprocal slope to it, that is,

$\bf \textit{perpendicular, negative-reciprocal slope for slope}\quad -\cfrac{1}{2}\\\\
negative\implies +\cfrac{1}{{{ 2}}}\qquad reciprocal\implies + \cfrac{{{ 2}}}{1}\implies 2$

so we're really looking for a line whose slope is 2, and runs through 4,-3,

$\bf \begin{array}{ccccccccc}
&&x_1&&y_1\\
% (a,b)
&&(~{{ 4}} &,&{{ -3}}~)
\end{array}
\\\\\\
% slope = m
slope = {{ m}}\implies 2
\\\\\\
% point-slope intercept
\stackrel{\textit{point-slope form}}{y-{{ y_1}}={{ m}}(x-{{ x_1}})}\implies y-(-3)=2(x-4)\implies y+3=2x-8
\\\\\\
y=2x-11$

7 0

3 years ago