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mixas84 [53]
3 years ago
15

Please HELP I DONT KNOW WHTA IM DOING!!

Mathematics
1 answer:
trasher [3.6K]3 years ago
6 0
BD is 18

XY is 4

IK is 8

DF is 16
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The histogram shows the heights in means of trees in a certain section of a park
aleksley [76]
<h2>Answer:</h2>

The number of trees which are less than 20 meters are:

                                  9

<h2>Step-by-step explanation:</h2>

Based on the histogram we are asked to find the number of trees which are less than 20 meters in height.

  Class interval             Frequency

        4-8                             1

        8-12                            2

        12-16                           2

        16-20                          4

        20-24                          6

        24-28                          4

        28-32                          2

i.e. we are asked to find the  total number of tress that lie in the class interval 4-20.

i.e. we add the frequencies that lie in the interval 4-20

i.e. Number of trees= 1+2+2+4=9 trees.

   

6 0
3 years ago
Is 8 a factor of 54t - 63 ?
shepuryov [24]

Answer:

yes it is i got a hundered on my test

5 0
3 years ago
What is the area of a circle whose radius is 4 ft?
ExtremeBDS [4]

Answer:

16π ft²

Step-by-step explanation:

The formula is [ A = πr² ]

A = π(4)²

A = 16π

Best of Luck!

6 0
3 years ago
An airplane flew 4 hours with a 25 mph tail wind. The return trip against the same wind took 5 hours. Find the speed of the airp
balu736 [363]

Answer:

r  = 225 Mil/h     speed of the airplane in still air

Step-by-step explanation:

Then:

d  is traveled distance   and r  the speed of the airplane in still air

so the first equation is for a 4 hours trip

as  d = v*t

d  =  4 *  ( r  + 25)    (1)          the speed of tail wind  (25 mil/h)

Second equation the trip back in 5 hours

d  =  5  * ( r  - 25 )    (2)

So we got a system of two equation and two unknown variables  d  and

r

We solve it by subtitution

from equation (1)     d  =  4r  + 100

plugging in equation 2

4r  + 100  = 5r -  125    ⇒   -r  =  -225     ⇒    r  = 225 Mil/h

And distance is :

d  =  4*r  +  100         ⇒ d  =  4 * ( 225)  +  100

d  =  900 +   100

d  = 1000 miles

6 0
3 years ago
Two Parnell lines (lines, L, and L2) are intersected by a transversal (L,3). Fill in the missing angle measure for each diagram
almond37 [142]

Apply the : congruent (corresponding alternate exterior and alternate interior angles) and supplementary (consecutive interior angles) theorems

step-by-step explanation:

The property to apply here is : congruent (corresponding alternate exterior and alternate interior angles) and supplementary (consecutive interior angles)

1.h = 180°-120°=60°=e=d=a

  f=120° = c=b

2.b=180°-105°=75°=c=f=g

   a=105°=e=h

3. f=180°-36°=144°=g=c=b

   a=36°=d=h

4. a=180°-161°=19°=e=h=d

   c=161°=f=g

5. f=180°-145°=35°=g=c=b

   a=145°=d=h

6. b=180°-25°=155°=c=f=g

    25°=d=e=h

Learn More

Angles :brainly.com/question/13209798

Keywords: parallel lines, intersect, transversal, angle

#LearnwithBrainly

7 0
3 years ago
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