D. SSS congruence theorem
Step-by-step explanation:
<u><em>I got SSS since AB and CD are equal and BC and DA are equal plus + the fact that AC=AC shows that it is the SSS congruence theorem</em></u>
Answer:
that is right
Step-by-step explanation:
no need to explain because there is nothing wrong with it
Answer:
8n-25=15+3n
Step-by-step explanation:
We can do this by working backwards and making suitable substitutions.
If n=8
Multiply both sides of the equation by 5
5n=8*5
5n=40
Now, we can rewrite the two sides of the equation as follows
Thus:
5n=40 is equivalent to:
8n-3n=25+15
Add 3n to both sides
8n-3n+3n=25+15+3n
8n=25+15+3n
Subtract 25 from both sides
8n-25=25-25+15+3n
We have:
8n-25=15+3n
Solving this equation will have a solution of n=8.
Answer:
= 1099 cm^2
Step-by-step explanation:
The surface area of a cylinder is found by using the formula
SA=2πrh+2πr^2
We know the diameter. To find the radius, we take the diameter and divide by 2.
r =d/2
r =14 cm/2 = 7 cm
h = 18 cm
Substituting what we know
SA = 2 * pi * 18 * 7 + 2 * pi * (7)^2
= 252 *pi + 2* pi *49
= 252 pi + 98 pi
= 350 * pi
Let pi be approximated by 3.14
SA = 350 * 3.14
= 1099 cm^2
26+10i, 26-10i
I'm assuming the 26 is not under the radical