Answer:
7 minutes
Step-by-step explanation:
The scientist changes the temperature for the solution at a rate of -7°C per minute. We need to find out how long it'll take for the solution's temperature to change from 0°C to -49°C. So, we divide -7 by -49 to find out how long it will take:
-49 / -7 = 7
It will take 7 minutes for the temperature to reach -49°C.
Answer:
please see photo for details
Answer:
If the expression is , then the answer is the first option.
If the expression is , then the answer is the third option.
Step-by-step explanation:
Remember that when you have a radical expression in the form , you can rewrite as:
Then:
- If the expression is , then you can rewrite it in the following radical form:
(This form matches with the first option.)
- If the expression is , then you can rewrite it in the following radical form:
(This form matches with the third option).
Answer:
see the explanation
Step-by-step explanation:
we know that
If two triangles are similar, then the ratio of its corresponding sides is proportional and its corresponding angles are congruent
so
Corresponding sides are
XY and PD
YZ and DQ
XZ and PQ
so
Corresponding angles are
∠X and ∠P
∠Y and ∠D
∠Z and ∠Q
so
∠X ≅ ∠P
∠Y ≅ ∠D
∠Z ≅ ∠Q