Answer:
ST = 3
Step-by-step explanation:
it tells you that ST is 3
9^ -2
9^ 8/9^4
9^8/9^10
9^ -6 · 9^3
9^5 · 9^ -7
Answer:
Step-by-step explanation:
Let's evaluate the answers.
Think of numbers with negative exponents as numbers on the wrong side of the fraction. So if you have a negative exponent, you put it at the bottom of the fraction or up and then you remove the negative sign.
So let's take the first answer:
Now the next one, according to the law of exponents, when dividing we subtract the exponents. (But this only applies if the coefficients are the same!)
Applying this rule to the second answer:
The third one:
If you apply the same rules to the rest of the choices, you wil find that they are not equivalent to 1/81.
The expressions that are equivalent to 1/81 are , , and .
To determine which expressions are equivalent to 1/81, we can simplify each expression and check if it equals 1/81.
: This expression is equivalent to 1/8, not 1/81. Therefore, it is not equivalent.: This expression is equivalent to 1/9², which simplifies to 1/81. Therefore, it is equivalent to 1/81. : This expression simplifies to , which is not equal to 1/81. Therefore, it is not equivalent.: This expression simplifies to , which is equivalent to 1/9². Therefore, it is equivalent to 1/81.: This expression simplifies to . Therefore, it is not equivalent.: This expression simplifies to , which is equivalent to 1/9². Therefore, it is equivalent to 1/81.Thus, the expressions that are equivalent to 1/81 are , , and .
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Answer:
It is 73
Step-by-step explanation:
Hope this helped
Answer:
∠ B = 25°
Step-by-step explanation:
the sum of the three angles in a triangle = 180° , that is
∠ A + ∠ B +∠ C = 180° ( substitute values for A and C )
33° + ∠ B + 122° = 180° , that is
155° + ∠ B = 180° ( subtract 155° from both sides )
155° - 155° + ∠ B = 180° - 155° , that is
∠ B = 25°
Theansweris6/7........
Answer:
Step-by-step explanation:
cross multiply
2 x 3 = 6
7 x 1 = 7
b. AB=CD
c. BAD=BCD
d. AC=BD
Answer:
(D)
Step-by-step explanation:
It is given that The diagonals of parallelogram ABCD intersect at point E.
then, using the properties of parallelogram, we get
(A) BD bisects AC
This is correct statement because the diagonals bisect each other in parallelogram.
(B) AB=CD
This is correct statement because the opposite sides of the parallelogram are equal.
(C) ∠BAD=∠BCD
This is correct because opposite angles of the parallelogram are equal.
(D) AC=BD
This is not necessarily true, because if the diagonals of parallelogram are equal, then it is a rectangle.
Hence, option D is correct option that is not necessarily true.