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3 years ago

the greatest wind speed ever recorded on earth's surface is 231 miles per hour. what is the speed in kilometers per hour

Mathematics

1 answer:

fgiga [73]3 years ago

3 0

the speed of wind in kilometers is 371.758

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Given: AB ∥ DC

RSB [31]

Answer:

$A=1,720.16\ units^2$

Step-by-step explanation:

we know that

The area of the trapezoid is equal to

$A=\frac{1}{2}(DC+AB)DE$

step 1

Find the measure of angle DAE

m∠ADC+m∠DAE=180° -----> by consecutive interior angles

we have

m∠ADC = 134°

substitute

134°+m∠DAE=180°

m∠DAE=180°-134°=46°

step 2

In the right triangle ADE

Find the length side AE

cos(∠DAE)=AE/AD

$AE=cos(46\°)(40)\\AE=27.79\ units$

step 3

In the right triangle ADE

Find the length side DE

sin(∠DAE)=DE/AD

$DE=sin(46\°)(40)\\DE=28.77\ units$

step 4

Find the area of ABCD

$A=\frac{1}{2}(DC+AB)DE$

we have

$DC=32\ units\\AB=DC+2(AE)=32+2(27.79)=87.58\ units\\DE=28.77\ units$

substitute

$A=\frac{1}{2}(32+87.58)28.77$

$A=1,720.16\ units^2$

5 0

4 years ago

A student solved the following problem and made an error. In which line did the student make the first mistake. Line A, Line 2,

Brut [27]

Answer:

line 5. i just took the test and got it correct. oh wait nvm urs is different

6 0

4 years ago

Factor completely 81x^4-16

mestny [16]

The will be (3x - 2) x (3x + 2) x (9x2 + 4)

7 0

3 years ago

Read 2 more answers

bridget needs an actor. Actor A is offering her services for an initial $250 in addition to $50 per day. Actor Bis offering her

Mumz [18]

Answer:

Day five

Step-by-step explanation:

7 0

3 years ago

Find the slope of the line y=-1/4x+9

Basile [38]

Answer:

slope = - $\frac{1}{4}$

Step-by-step explanation:

The equation of a line in slope0 intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = - $\frac{1}{4}$ x + 9 ← is in slope- intercept form

with slope m = - $\frac{1}{4}$

3 0

3 years ago