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2 years ago

R=2/3t +v...solve for t...thanks

Mathematics

2 answers:

tino4ka555 [31]2 years ago

7 0

Answer:

Step-by-step explanation:

10ac-x/11=-3 solve for a

mote1985 [20]2 years ago

4 0

$\dfrac{2}{3}t+v=r\ \ \ |subtract\ v\ from\ both\ sides\\\\\dfrac{2}{3}t=r-v\ \ \ \ |multiply\ both\ sides\ by\ \dfrac{3}{2}\\\\\boxed{t=\frac{3}{2}(r-v)}$

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The given line passes through the points (-1,-1) and (4.1).

ira [324]

Answer:

(-1,-1) and (4.1).

1+1

slope of the line: m= ------- = 2/5

4+1

the slope of the perpendicular line: -5/2 and point (-1,3)

(y-3) = -5/2(x+1)

6 0

2 years ago

ASAP PLEASE HELP!!!

Mariulka [41]

Z score = (x -mean) / standard deviation.

For this problem X = 50 cm.

Z-score = (50 - 49.2) / 1.8

Z score = 0.8 / 1.8

Z score = 0.44

Look up 0.44 on a z-score table.

0.44 = 0.6700

0.67 x 100 = 67% will be 50 cm or longer.

8 0

2 years ago

Find the standard equation of the parabola that satisfies the given conditions. Also, find the length of the latus rectum of eac

lakkis [162]

Answer:

The standard parabola

y² = -18 x +27

Length of Latus rectum = 4 a = 18

Step-by-step explanation:

<u><em>Explanation:-</em></u>

Given focus : (-3 ,0) ,directrix : x=6

Let P(x₁ , y₁) be the point on parabola

PM perpendicular to the the directrix L

SP² = PM²

(x₁ +3)²+(y₁-0)² = $(\frac{x_{1}-6 }{\sqrt{1} } )^{2}$

x₁²+6 x₁ +9 + y₁² = x₁²-12 x₁ +36

y₁² = -18 x₁ +36 -9

y₁² = -18 x₁ +27

The standard parabola

y² = -18 x +27

Length of Latus rectum = 4 a = 4 (18/4) = 18

5 0

2 years ago

Find the surface area.

Triss [41]

Answer:

196 $ft^{2}$

Step-by-step explanation:

Surface are of 2 rectangles = 2(2*4) = 16 $ft^{2}$

surface are of the base rectangle = 4*3 = 12 $ft^{2}$

Area of tow triangles =2( $\frac{1}{2}$ * 2* 2)= 4 $ft^{2}$

total = 16+12+4

= 196 $ft^{2}$

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2 years ago

Write the equation of a line with a slope of -1 passing through the point (0,5)

elixir [45]

$The\ slope-intercept\ form\ of\ the\ line:y=mx+b\\\\m-the\ slope\\b-y-intercept\\\\m=-1;\ (0;\ 5)\to b=5\\\\Answer:\boxed{y=-x+5}$

8 0

2 years ago