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maxonik [38]
3 years ago
15

AB is a diameter of circle C. What is the degree measure of x?

Mathematics
1 answer:
UNO [17]3 years ago
8 0
It’s a right angle. it follows the circle theorem ‘the angle in a semi-circle is 90 degrees’
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Tree times the sum of ten and a number is 25. What is the number? <br><br> (Fraction)
ella [17]

Answer:

Step-by-step explanation:

3(10+n) = 25

30 +3n =25

30-30 and 25-30=

3n=-5

3/3 and 5/-3

6 0
3 years ago
Read 2 more answers
What is the image point of (-7,1) after a translation left 4 units and down 5 units?
irina1246 [14]
The final point should end up at (-11,-4)
7 0
3 years ago
Hello! How do I find the surface area of this prism? Thanks!
Studentka2010 [4]
Answer: Choice C) 124 square cm

------------------------------------------------------------------

Explanation:

Let's calculate the area of the trapezoid shown
b1 and b2 are the parallel bases; h is the height of the 2D trapezoid
b1 = 2
b2 = 5
h = 1.5

A = h*(b1+b2)/2
A = 1.5*(2+5)/2
A = 1.5*7/2
A = 10.5/2
A = 5.25
The area of one 2D trapezoid is 5.25 sq cm
There are two of these trapezoids that form the base faces of the trapezoidal prism. So the total base area is 2*5.25 = 10.5 sq cm
Keep this value (10.5) in mind. We'll use it later.

------------

Now onto the lateral surface area (LSA)
It turns out that the formula for the LSA is
LSA = p*d
where 
p = perimeter of the trapezoid shown
d = depth or height of the 3D trapezoid (I'm not using h as it was used earlier)
This formula works for any polygonal base. It doesn't have to be a trapezoid.

In this case the perimeter is,
p = 1.7+2+2.65+5
p = 11.35

So
LSA = p*d
LSA = 11.35*10
LSA = 113.5

Add this LSA to the base area found earlier
10.5+113.5 = 124

The total surface area is 124 square cm
8 0
3 years ago
Urgent!! Help math!!
mylen [45]

10,11,15   is  not right triangle

30,40,50  is right triangle

9,13,16    is  not right angel

16,30,34 is  right triangle

4 0
3 years ago
Can anyone please help me
astraxan [27]

Answer:

its 72

Step-by-step explanation:

hope this helps

6 0
3 years ago
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