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Marat540 [252]
3 years ago
7

Calculate the height of an equilateral triangle with side is 8 cm long​

Mathematics
1 answer:
Greeley [361]3 years ago
8 0

Step-by-step explanation:

use pythagoras theorem for finding the height

hypotenuse is 8cm

base is 4 cm

height?

a^2+b^2=c^2

64-16=a^2

a=7.07cm

Height of equilateral triangle is 7.07cm

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A taxi travels 25 km east of airport. Then it travels from that point to a point that is 40 km west of the airport. Finally the
Marizza181 [45]
The answer is:  " 95 km " .
__________________________________________________
Explanation:
__________________________________________________

                                   ("airport")
                                           •     {Step 1):       " 25 km east "               •<span>  
                                           </span>│===============================>  <span>│

                           </span>•  {Step 2):       " 40 km west ["of that point"] " ;        •                                             │<==========================================│<span>  
             
                          </span>•  {Step 3:  [back to airport] = " (40 km − 25 km) " ;

                                            • ("airport").
                         │=======>│
<span> _________________________________________________
                          
<u> Note</u>:  To find "total distance traveled:

" 40 km +</span> (40 km) + (40 km <span>− 25 km) " ; 

= </span>" 40 km + (40 km) + (15 km) " ;

= " 40 km + 40 km + (15 km) " ;

= 80 km + 15 km  ;   

=  95 km .
____________________________________________________
<span>
The answer is:  " 95 km <span>" .
</span>____________________________________________________

</span>
4 0
4 years ago
Mrs. Frasier is making costumes for the school play. Each costume requires 3/4 yards of fabric. She bought 6 yards of fabric. Ho
kodGreya [7K]

Answer:

8 costumes

Step-by-step explanation:

Take the total amount of fabric and divide by the amount per costume

6 ÷ 3/4

Copy dot flip

6 * 4/3

6/3 *4

2 *4

8

She can make 8 costumes

6 0
3 years ago
Which statement comparing these measures is true? A microgram is 1,000 times greater than a milligram.
ololo11 [35]
The statement is false.

The statement below is true.
A milligram is 1000 times greater than a microgram.
3 0
3 years ago
Hi can someone please help me?
marshall27 [118]
Both can be right because if the function goes up, turns and goes down, between x = -2 and x = 2, it can happen that  f(-2) = f(2) and then the average rate of change is [f(2) - f(-2)] / [2-(-2)] which is 0/4 = 0.
4 0
3 years ago
Help ! solve the following system of equations <br><br> -9x+2y=-13<br><br> 2x-9y=20
Stella [2.4K]

Answer: x = 1, y = -2

Step-by-step explanation:

-9x+2y=-13

x= 13/9 + 2/9y

2x-9y=20

2(13/9+2/9y)-9y=20

<em>Substitute y with -2.</em>

<em />

x= 13/9+2/9(-2)

<em>After solving you'll see that 1 is a possible solution for x.</em>

<em />

Check your answer

-9x+2y=-13

-9x1+2(-2) = -13

2x-9y=20

2x1-9(-2) = 20

-13 = -13

20 = 20

Therefore, x=1 and y=-2

5 0
3 years ago
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