Answer:
15°C
Step-by-step explanation:
Use the following formula to convert Fahrenheit to Celsius:
Substitute the value for the variable and solve for C.
Therefore, 59°F is equivalent to 15°C.
Step-by-step explanation:
0.2x - 1 = -1
first write out the problem
0.2x - 1 = -1
+1 +1 Add 1 to both sides to remove the -1 from the same side as x
0.2x = 0
/0.2 /0.2 Divide the number being multiplied with x to get x alone
0/0.2 = 0
x = 0 Now you have the answer.
Answer:
These two triangles are congruent.
Step-by-step explanation:
You know this bc the markings on the drawing show that Angle B and Angle D are congruent. Also that AB is parallel to CD. This means that Angle BAC and Angle DCA are congruent by ALTERNATE INTERIOR ANGLES. Also, AC is congruent to itself. That makes the two triangles congruent by ANGLE-SIDE-ANGLE.
Now, you need to know that "congruent" triangles (and shapes in general) are the same size and shape. "Similar" triangles (shapes) are the same shape but not necessarily the same size.
SOLUTION:
from OA=AB
\theta +\theta 45=180
2\theta =180-45
\theta =\frac{180-45}{2}=67.5
from sin rule,
\frac{OA}{sin\theta }=\frac{AB}{sin\theta }=\frac{OB}{sin45}
\therefore \frac{1}{sin67.5}=\frac{1}{sin67.5}=\frac{OB}{sin45}
\therefore OB=\frac{sin45}{sin67.5}=0.765366864730ml
\therefore net displacement OB=o.77ml