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2 years ago

Hurry only have 20 min to complete

Mathematics

1 answer:

Bumek [7]2 years ago

8 0

Answer:

(5, 5 )

Explanation:

dilate means to get smaller so you divide 1/2 by (10,10)

half of 10 is 5, so the coordinate is (5, 5)

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The 400-meter race times at a state track meet are normally distributed with a mean

rjkz [21]

Answer:

P = 1.214

Step-by-step explanation:

Draw a normal probability curve.

Find the z score which comes out to be 0.18 (0.181578947)

look for the probability in the table.

look across 0.1 and under 8.

Get the probability and add 0.5 to it

so rhats:

0.714 + 0.5 = 1.214

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2 years ago

The difference of the same side interior angles of two parallel lines is 50°. Find all angles.

Gre4nikov [31]

50 30 45 that is your answer for this

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2 years ago

When using substitution to solve this system of equations, what is the result of the first step?

Fittoniya [83]

Answer:

answer

Step-by-step explanation:

one of you answer this question

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2 years ago

Which function below is the inverse of f(x) = x2 − 16?

bearhunter [10]

<span>f(x) = x2 − 16
y = x2 - 16
x = y2 - 16
+ 16 to both sides
x+16 = y2
divide both sides by 2
1/2x+8 = y</span>

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2 years ago

A 29-meter ladder is sliding down a vertical wall so the distance between the top of the ladder and the ground is decreasing at

vitfil [10]

Complete question

A 29-meter ladder is sliding down a vertical wall so the distance between the top of the ladder and the ground is decreasing at 7 meters per minute. At a certain instant, the bottom of the ladder is 21 meters from the wall.

What is the rate of change of the distance between the bottom of the ladder and the wall at that instant(in meters per minute)

Answer:

$\frac{dx}{dt}=11.94m/min$

Step-by-step explanation:

From the question we are told that

Slant height $z=29m$

Change in Vertical height $\triangle y=7m/s$

Horizontal length $x=21$

Generally in finding the distance form the top to the bottom of the wall it is mathematically given by

$x^2+y^2=z^2$

$21^2+y^2=29^2$

$y^2=29^2+21^2$

$y=35.81$

Generally solving for the differential equation is mathematically represented as

$x^2+y^2=29^2$

$2x*\frac{dx}{dt} +2y*\frac{dy}{dt} =0$

$x*\frac{dx}{dt} +y*\frac{dy}{dt} =0$

$(21)*\frac{dx}{dt} +(35.81)*(-7) =0$

$(21)*\frac{dx}{dt} -250.64 =0$

$\frac{dx}{dt}=\frac{250.64}{21}$

$\frac{dx}{dt}=11.94m/min$

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2 years ago