Answer:
A
Step-by-step explanation:
using the rule of exponents
• × ⇔ , hence
× 7² = =
Answer:
6.7% decrease each day
Step-by-step explanation:
Half life: 10 days
Fraction = 0.5^(t/10)
Where t is the no. of days
Per day: t = 1
0.5^(1/10)
0.9330329815 × 100 = 93.30329917
Decrease of: 100 - 93.30329917
= 6.696700846% each day
Answer:
i believe its x+5
Step-by-step explanation:
you add 13 to both numbers
For a circle k(O) with diameter AB and CD ⊥ AB, it is proved that AD·CB=AC·CD, using similarity of triangles.
Given:
circle k(O) with diameter AB
CD ⊥ AB
To Prove: AD·CB=AC·CD
Proof:
In ΔADC and ΔCDB,
∠ADC = ∠CDB = 90°
[∵Both are right angle triangles]
CB = CB [Common side]
⇒ AC / CB = CD / DB
Thus, ΔACD is similar to ΔCDB by RHS similarity.
Therefore, we can write,
AD/CD = AC/CB [Since corresponding sides of similar triangles are proportional]
⇒ AD·CB = AC·CD
Hence proved.
Learn more about similarity here:
brainly.com/question/25882965
#SPJ1
Answer:
(x - 3, y + 3 )
Step-by-step explanation:
Note G(5, - 2 ) → G'(2, 1 )
Requires 3 to be subtracted from 5 to obtain 2 and 3 to be added to - 2 to obtain 1, thus
(x, y ) → (x - 3, y + 3 ) is the translation rule