Answer:
Triangle small ABC
Triangle big DEF
AB = 8 cm , BC = 12 cm , DE = 20 cm , EF = x
So;

I hope I helped you^_^
Answer:
Only the second equation is an identity
Step-by-step explanation:

<u>Note that </u>

<u>You can confirm it: </u>

<u>Therefore</u>



<h2>
It is not an Identity</h2>
<u>Let's the second one</u>

In this case, we already performed the calculations, so it is true. It is an Identity.
Answer:
Solution given:
AB=3units
<B=45°
<C=63°
DF=3units
<E=63°
<F=45°
for congruence opposite corresponding angle or side should be equal
so
∆ABCis congruent to ∆DFE by A.A.S axiom
Similarly
its another name also be
∆BAC=~ ∆FDE
you got it.third one.
Answer:

Step-by-step explanation:
2/3 pi radians = 2/3 * 180 = 2 * 60 = 120 degrees
split triangle in half:
30, 60, 90 triangle
1/2 PR= 4 root 3
Answer:
C. 5 weeks.
Step-by-step explanation:
In this question we have a random variable that is equal to the sum of two normal-distributed random variables.
If we have two random variables X and Y, both normally distributed, the sum will have this properties:

To calculate the expected weeks that the donation exceeds $120, first we can calculate the probability of S>120:

The expected weeks can be calculated as the product of the number of weeks in the year (52) and this probability:

The nearest answer is C. 5 weeks.