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suter [353]
3 years ago
14

A is the midpoint of xy. find xa.find ay and xy.

Mathematics
1 answer:
frosja888 [35]3 years ago
8 0
xa=ay=\frac{1}{2}\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\,and\,xy=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}
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A pole is used to support an observation platform. The top of the pole is secured by two guy wires, one 18 and the other 21 feet
Harman [31]
Let A be the point on the ground to with the 18 foot guy is anchored and D the point on the ground to with the 21 foot guy is anchored.

We can conclude that the <span>the two wires at the points where they are anchored are 21 feet apart. Check the procedures in the picture attached.</span>

5 0
3 years ago
What are the solutions to the equation 3(x – 4)(x + 5) = 0
Ne4ueva [31]

Answer:

x=4

x=-5

Step-by-step explanation:

in order for this to be equal to 0, 1 or both of the factors has to be 0, because anything multiplied by 0 is 0.

123 * 29382 * 8139* 0 = 0

x-4 = 0

x = 4

x+5 = 0

x=-5

7 0
3 years ago
How many ways can a president, vis-president and treasurer be selected from a group of 15 students?
dybincka [34]

Answer:

455ways

Step-by-step explanation:

This is expressed as 15 C 3 ( C- combination)

The concept of combination is used when we talk about selection.

Now we are selecting 3 from a sample of 15

15 C 3 = 15! / (15-3)! 3! = 15 ×14×13×12!/12!×3×2

= 5 × 7 × 13 = 455ways

8 0
3 years ago
Kevin is 3 times as old as Daniel. 4 years ago, Kevin was 5 times as old as Daniel. How old is Kevin now?
marishachu [46]
He might be 6 now.

hope this helped :)

plzz tell me if I was wrong
8 0
4 years ago
Read 2 more answers
I WILL GIVE YOU BRAINLY PLSS <br><br><br> Worth 19 points
Pavel [41]

Answer:

942

Step-by-step explanation :

so your d is 300 so your r = 300/2= 150  

a=3.14*r*r= 3.14*150*150= 70650

c= 3.14*d= 3.14*300= 942

_________________________________________________

OR

The curved surface area of solid cylinder is  

 

As we are given that:

Diameter of solid cylinder = 8 cm

Length or Height o solid cylinder = 140 cm

Formula used to calculate the curved surface area of cylinder is:2n x h

Curved surface area of cylinder =2r x h  

where,

r = radius of cylinder

h = height or length of cylinder

Radius of cylinder =  daimeter

Now putting all the given values in above formula, we get:

Curved surface area of cylinder =  2x 22/7 x 140cm

Curved surface area of cylinder = 3520cm^{2}

Therefore, the curved surface area of solid cylinder is3520cm^{2}

8 0
3 years ago
Read 2 more answers
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